[RELEASED] OpenCV for Unity

hi

i'm using OpenCV with RealTime FaceRecognition Example, and I'm having some trouble saving the faces.

If I start the Demo Scene, save and load faces, without stopping the application, works without problem.

But when I stop the application, start again, load the faces that I saved, add a new face on it and try to save, the file that creates with the faces infos, when I hit the save button, it delete all the information of the other faces that was there, and save nothing on it.

any idea/help?

thanks

Using:
Unity 2019.2.3f1
OpenCV v2.3.7
RealTime FaceRecognition v1.0.5
macOS Mojave v10.14.6

 

Thank you very much for reporting.
Does this problem occur on UnityEditor?

 

Hi,
I'm using Full Version of OpenCV for unity and when I'm running on editor everything works just fine. While building for Android everything is fine also, no error is displayed. But when running on device it gives this exception:

Code (CSharp):

1.  
2. DllNotFoundException: opencvforunity
3. E/Unity   ( 7431):   at (wrapper managed-to-native) OpenCVForUnity.CoreModule.Mat.core_Mat_n_1Mat__III(int,int,int)
4. E/Unity   ( 7431):   at OpenCVForUnity.CoreModule.Mat..ctor (System.Int32 rows, System.Int32 cols, System.Int32 type) [0x00006] in <d591942a2b0f4719857f74efe6d52c69>:0
5.  

I followed your setup video. My StreamingAssets folder is Assetf folder and I did set Plugin import settings.
I'm using Unity 2019.2.17f1 and Windows 10.
I would really appreciate thay if you can provide detailed solution with every step.
Thank you.

 

yes
on editor and on windows build/osx build

 

Is Target Architectures set as follows?

 

Yes it worked! Thank you! But I want to support Android 4 also. Can I do that? Which openCV version should I use?

 

I think I found the problem and the solution

I changed the class to only save 1 face of the person, and when you load, and try to save a new one face only of a new person, it crashes
so I changed to keep saving every faces as possible inside a time.

so the problem was created and solved

 

The problem seems to occur when training the collected faces fails.
As a workaround, add the following code to WebCamTextureRealTimeFaceRecognitionExample.cs at line 847.

Code (CSharp):

1.  
2.                         // If the reconstructed face is incorrect, return to COLLECT FACES mode.
3.                         if (reconstructedFace.empty())
4.                             m_mode = MODES.MODE_COLLECT_FACES;
5.  

 

OpenCVForUnity 2.3.4 and earlier versions support Android 4.

 

Hello, I have a problem with Hololens 2, I tried to build UWP ARM32 and ARM64, I cannot get the camera to work. The Log says: OnWebCamTextureToMatHelperErrorOccurred TIMEOUT.
Everything works just fine on Hololens 1.

Unity 2019.1.14f1
MRTK 2.2.0
OpenCV4Unity 2.3.8

 

Is the project you tried using HoloLensCameraStream?
https://github.com/EnoxSoftware/HoloLensWithOpenCVForUnityExample

Is WebCam in the Capabilities setting enabled?

 

hi, i would like to ask if i want to compare two photos similarity, for example i have one photo in database then in game i screenshot, can i compare these two photos? can this asset help me to do the job?

 

Feature2DExample is included in OpenCVForUnity.
https://github.com/EnoxSoftware/Ope...atures2d/Feature2DExample/Feature2DExample.cs


Since this asset is a clone of OpenCV4.2.0 Java, you are able to use the same API as OpenCV4.2.0 Java.

 

how to detect unity 3D game objects inside the unity editor?
without 2D image.

Example?

 

https://github.com/EnoxSoftware/Ope...WriterExample/VideoWriterExample.cs#L162-L165
You can use the ReadPixels method to get Texture2D of the screenshot. Then you can convert Texture2D to Mat and detect objects.

 

Hi Enox Software... I beg for your help. Can you generate code for applying the SURF or KAZE algorithm in OpenCVFoUnity to augmented reality. I really need, please.

 

Unfortunately, I don't have ARExample using SURF or KAZE algorithms.
MarkerLessARExample uses the ORB algorithm, but if you want to use other algorithms, change the detector and extractor to other algorithms.
https://github.com/EnoxSoftware/Mar...ample/MarkerLessAR/PatternDetector.cs#L97-L98

 

When i try to use the SURF parameter in OpenCVForUnity, the webcam always force close. Can you help me?

 

The native library included in OpenCVForUnity is built with the OPENCV_ENABLE_NONFREE flag disabled.　To use the SIFT and SURF algorithms, rebuild OPENCV library with OPENCV_ENABLE_NONFREE enabled. For more details, see the section on “How to use OpenCV Dynamic Link Library with customized build settings” in ReadMe.pdf.

 

Okay... I did not understand to do that. Can you make it for me? I beg you to help me. : ')

 

If you want, I want you to make a configuration with SURF / SIFT that can be used. And give it to me. : ')

 

Hi @EnoxSoftware, I recently tried to build my iOS app using Unity Cloud Build, and encountered an issue.
I have a custom script that uploads the final .ipa to Appstore, and while trying to upload the binary, it is rejected with following errors :

The UCB used Xcode 11.2.1 to build the ipa.
I used to test with local build and it was built and ran OK. So this seems to be the problem when you actually submit to Appstore.

For the unsupported architecture, I can change it to ARM64 only from the Unity Inspector, but I'm not sure what I can do with the later ones. If you have any insight, please let me know.

+ Edit
It was indeed the Appstore problem. Locally built app also rejected from the Appstore saying the same problem. I'll try to download the latest OpenCVForUnity from the AssetStore and see if that fixes the issue.

+ Edit
Updating to 2.3.8 soloved the issue. (ios post build works)

 

Hi, I'm trying to use MatIndexer class and in documentation it says that it's supposed to be in OpenCVForUnity.UtilsModule.MatIndexer. But compiler says that MatIndexer is not in that namespace. Any help? Thank you!

 

Hi, I am trying to run example scenes for HoloLens on HL2, and it does not work with the following error shown in the attached image. Any help? Thank you.

 

I built the HoloLensCamStream plug-in in ARM mode.

 

I haven't actually tried it, but I think that for the HoloLensCameraStream plug-in to work with HoloLens 2, a new HoloLensCameraStream.dll with ARM64 architecture needs to be built and added to the project.
The same topic within issues:
https://github.com/VulcanTechnologies/HoloLensCameraStream/issues/63

 

1. Build the OpenCV dynamic library.
Download OpenCV 4.2.0 repository ( git: opencv , opencv-contrib ).

BUILD_SHARED_LIBS=1
OPENCV_ENABLE_NONFREE:BOOL=1


2. Copy “OpenCVForUnity\Extra\dll_version\Windows\” to “OpenCVForUnity\Plugins\Windows\”. And, Copy the built dll file to “OpenCVForUnity\Plugins\Windows\”.

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.SceneManagement;
3. using System.Collections;
4. using OpenCVForUnity.CoreModule;
5. using OpenCVForUnity.ImgprocModule;
6. using OpenCVForUnity.Features2dModule;
7. using OpenCVForUnity.UnityUtils;
8. using OpenCVForUnity.Xfeatures2dModule;
9.  
10. namespace OpenCVForUnityExample
11. {
12.     /// <summary>
13.     /// Feature2D Example
14.     /// An example of descriptor extraction and descriptor matching.
15.     /// http://docs.opencv.org/3.1.0/d5/dde/tutorial_feature_description.html
16.     /// </summary>
17.     public class Feature2DExample : MonoBehaviour
18.     {
19.         // Use this for initialization
20.         void Start ()
21.         {
22.             Texture2D imgTexture = Resources.Load ("lena") as Texture2D;
23.            
24.             Mat img1Mat = new Mat (imgTexture.height, imgTexture.width, CvType.CV_8UC3);
25.             Utils.texture2DToMat (imgTexture, img1Mat);
26.             Debug.Log ("img1Mat.ToString() " + img1Mat.ToString ());
27.  
28.             Mat img2Mat = new Mat (imgTexture.height, imgTexture.width, CvType.CV_8UC3);
29.             Utils.texture2DToMat (imgTexture, img2Mat);
30.             Debug.Log ("img2Mat.ToString() " + img2Mat.ToString ());
31.  
32.  
33.             float angle = UnityEngine.Random.Range (0, 360), scale = 1.0f;
34.  
35.             Point center = new Point (img2Mat.cols () * 0.5f, img2Mat.rows () * 0.5f);
36.  
37.             Mat affine_matrix = Imgproc.getRotationMatrix2D (center, angle, scale);
38.  
39.             Imgproc.warpAffine (img1Mat, img2Mat, affine_matrix, img2Mat.size ());
40.  
41.  
42.             //ORB detector = ORB.create ();
43.             //ORB extractor = ORB.create ();
44.             SURF detector = SURF.create();
45.             SURF extractor = SURF.create();
46.  
47.             MatOfKeyPoint keypoints1 = new MatOfKeyPoint ();
48.             Mat descriptors1 = new Mat ();
49.  
50.             detector.detect (img1Mat, keypoints1);
51.             extractor.compute (img1Mat, keypoints1, descriptors1);
52.  
53.             MatOfKeyPoint keypoints2 = new MatOfKeyPoint ();
54.             Mat descriptors2 = new Mat ();
55.        
56.             detector.detect (img2Mat, keypoints2);
57.             extractor.compute (img2Mat, keypoints2, descriptors2);
58.  
59.  
60.             DescriptorMatcher matcher = DescriptorMatcher.create (DescriptorMatcher.BRUTEFORCE_L1);
61.             MatOfDMatch matches = new MatOfDMatch ();
62.  
63.             matcher.match (descriptors1, descriptors2, matches);
64.  
65.  
66.             Mat resultImg = new Mat ();
67.  
68.             Features2d.drawMatches (img1Mat, keypoints1, img2Mat, keypoints2, matches, resultImg);
69.  
70.  
71.             Texture2D texture = new Texture2D (resultImg.cols (), resultImg.rows (), TextureFormat.RGBA32, false);
72.        
73.             Utils.matToTexture2D (resultImg, texture);
74.  
75.             gameObject.GetComponent<Renderer> ().material.mainTexture = texture;
76.         }
77.    
78.         // Update is called once per frame
79.         void Update ()
80.         {
81.    
82.         }
83.  
84.         /// <summary>
85.         /// Raises the back button click event.
86.         /// </summary>
87.         public void OnBackButtonClick ()
88.         {
89.             SceneManager.LoadScene ("OpenCVForUnityExample");
90.         }
91.     }
92. }

 

Does AccessingPixelValueExample of MatBasicProcessingExample work without problems?
https://github.com/EnoxSoftware/Ope...mple/MatBasicProcessingExample.cs#L2054-L2084

 

thanks... but i cant build in android. what command to activate non free module?
" python ../opencv/platforms/android/build_sdk.py ../build ../opencv
--ndk_path=C://android-ndk --sdk_path=C://android-sdk
--extra_modules_path=../opencv_contrib/modules --use_android_buildtools. "
There is no command to activate non free module.

 

Hi Enox, iwant to purchase your asset
But i want to try it first. I have trained a custom tolo model and i downloaded your asset (free trial), it works fine
But when i was going to build an apk it crushed


In order to build on android i have to purchase the asset first?

 

Hi all! Do someone know the way to put some 3d object "inside the mouth" I need to put ar spoon inside it, but as I know I can't get a 3d mesh like in spark or lens studio. Maybe opencvforunity have some trick way to do it?

 

Could you add the parameters you want to add after this line?
https://github.com/opencv/opencv/blob/master/platforms/android/build_sdk.py#L222

OPENCV_ENABLE_NONFREE="ON"

 

The trial version is only compatible with the editor.
https://enoxsoftware.com/opencvforunity/get_asset/

 

Hi @EnoxSoftware

Thanks for a great OpenCV integration. Usually things work out smoothly, but now FaceMarkExample crashes on start in 2019.3.0f6 on Windows 10, version 2.3.8. Does this crash report give any clues?

All the best
Carl Emil

Spoiler: Crash Report

Code (CSharp):

1. Crash!!!
2. SymInit: Symbol-SearchPath: 'C:/Program Files/Unity/Hub/Editor/2019.3.0f6/Editor/Data/Mono;.;C:\Users\ce\Repos\HC4;C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor;C:\WINDOWS;C:\WINDOWS\system32;SRV*C:\websymbols*http://msdl.microsoft.com/download/symbols;', symOptions: 534, UserName: 'ce'
3. OS-Version: 10.0.0
4. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\Unity.exe:Unity.exe (00007FF727FE0000), size: 135790592 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 2019.3.0.43809
5. C:\WINDOWS\SYSTEM32\ntdll.dll:ntdll.dll (00007FFD1EAE0000), size: 2031616 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.418
6. C:\WINDOWS\System32\KERNEL32.DLL:KERNEL32.DLL (00007FFD1CCE0000), size: 729088 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.329
7. C:\WINDOWS\System32\KERNELBASE.dll:KERNELBASE.dll (00007FFD1BC80000), size: 2764800 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.535
8. C:\WINDOWS\System32\CRYPT32.dll:CRYPT32.dll (00007FFD1C0D0000), size: 1347584 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.592
9. C:\WINDOWS\System32\ucrtbase.dll:ucrtbase.dll (00007FFD1BB50000), size: 1024000 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.387
10. C:\WINDOWS\System32\MSASN1.dll:MSASN1.dll (00007FFD1B9E0000), size: 73728 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
11. C:\WINDOWS\System32\USER32.dll:USER32.dll (00007FFD1E420000), size: 1654784 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.592
12. C:\WINDOWS\System32\win32u.dll:win32u.dll (00007FFD1BC50000), size: 135168 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.592
13. C:\WINDOWS\System32\GDI32.dll:GDI32.dll (00007FFD1CB90000), size: 155648 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
14. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\OpenImageDenoise.dll:OpenImageDenoise.dll (00007FFC9DA70000), size: 38039552 (result: 0), SymType: '-deferred-', PDB: ''
15. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\libfbxsdk.dll:libfbxsdk.dll (00007FFCABBB0000), size: 8511488 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 2018.1.1.0
16. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\optix.6.0.0.dll:optix.6.0.0.dll (00007FFCE3BA0000), size: 208896 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 6.0.0.0
17. C:\WINDOWS\System32\gdi32full.dll:gdi32full.dll (00007FFD1BF30000), size: 1654784 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.535
18. C:\WINDOWS\System32\msvcp_win.dll:msvcp_win.dll (00007FFD1C9C0000), size: 647168 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.387
19. C:\WINDOWS\System32\ADVAPI32.dll:ADVAPI32.dll (00007FFD1E760000), size: 667648 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.329
20. C:\WINDOWS\System32\msvcrt.dll:msvcrt.dll (00007FFD1D700000), size: 647168 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 7.0.18362.1
21. C:\WINDOWS\System32\sechost.dll:sechost.dll (00007FFD1E380000), size: 618496 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.267
22. C:\WINDOWS\System32\RPCRT4.dll:RPCRT4.dll (00007FFD1CBC0000), size: 1179648 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.476
23. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\RadeonImageFilters64.dll:RadeonImageFilters64.dll (00007FFCB93E0000), size: 1310720 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 1.4.0.0
24. C:\WINDOWS\System32\SHELL32.dll:SHELL32.dll (00007FFD1DC00000), size: 7229440 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.535
25. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\OpenRL.dll:OpenRL.dll (0000000180000000), size: 12779520 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 1.5.100.0
26. C:\WINDOWS\System32\cfgmgr32.dll:cfgmgr32.dll (00007FFD1CA60000), size: 303104 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.387
27. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\umbraoptimizer64.dll:umbraoptimizer64.dll (00007FFCB8F60000), size: 1306624 (result: 0), SymType: '-deferred-', PDB: ''
28. C:\WINDOWS\System32\SETUPAPI.dll:SETUPAPI.dll (00007FFD1D0D0000), size: 4653056 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
29. C:\WINDOWS\System32\WS2_32.dll:WS2_32.dll (00007FFD1D850000), size: 454656 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.387
30. C:\WINDOWS\System32\shcore.dll:shcore.dll (00007FFD1CDA0000), size: 692224 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
31. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\libcef.dll:libcef.dll (00007FFC9A8A0000), size: 52219904 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 3.2062.1930.0
32. C:\WINDOWS\System32\bcrypt.dll:bcrypt.dll (00007FFD1CAB0000), size: 155648 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.267
33. C:\WINDOWS\System32\WLDAP32.dll:WLDAP32.dll (00007FFD1D060000), size: 425984 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.449
34. C:\WINDOWS\System32\Normaliz.dll:Normaliz.dll (00007FFD1E620000), size: 32768 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
35. C:\WINDOWS\System32\combase.dll:combase.dll (00007FFD1D8C0000), size: 3366912 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.449
36. C:\WINDOWS\System32\PSAPI.DLL:PSAPI.DLL (00007FFD1EA90000), size: 32768 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
37. C:\WINDOWS\System32\bcryptPrimitives.dll:bcryptPrimitives.dll (00007FFD1BAD0000), size: 524288 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.295
38. C:\WINDOWS\SYSTEM32\HID.DLL:HID.DLL (00007FFD1A4E0000), size: 57344 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
39. C:\WINDOWS\System32\SHLWAPI.dll:SHLWAPI.dll (00007FFD1D540000), size: 335872 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
40. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\ispc_texcomp.dll:ispc_texcomp.dll (00007FFCB89C0000), size: 1609728 (result: 0), SymType: '-deferred-', PDB: ''
41. C:\WINDOWS\System32\windows.storage.dll:windows.storage.dll (00007FFD1C220000), size: 7860224 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.535
42. C:\WINDOWS\System32\COMDLG32.dll:COMDLG32.dll (00007FFD1E810000), size: 851968 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.418
43. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\WinPixEventRuntime.dll:WinPixEventRuntime.dll (00007FFD04490000), size: 45056 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 1.0.1812.6001
44. C:\WINDOWS\System32\profapi.dll:profapi.dll (00007FFD1B9C0000), size: 126976 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
45. C:\WINDOWS\System32\ole32.dll:ole32.dll (00007FFD1D5A0000), size: 1400832 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.113
46. C:\WINDOWS\System32\powrprof.dll:powrprof.dll (00007FFD1BA00000), size: 303104 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
47. C:\WINDOWS\System32\OLEAUT32.dll:OLEAUT32.dll (00007FFD1CF90000), size: 802816 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.535
48. C:\WINDOWS\System32\UMPDC.dll:UMPDC.dll (00007FFD1B9B0000), size: 65536 (result: 0), SymType: '-deferred-', PDB: ''
49. C:\WINDOWS\System32\IMM32.dll:IMM32.dll (00007FFD1E690000), size: 188416 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.387
50. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\tbb.dll:tbb.dll (00007FFCD8FD0000), size: 413696 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 2017.0.2016.1004
51. C:\WINDOWS\System32\kernel.appcore.dll:kernel.appcore.dll (00007FFD1BA50000), size: 69632 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
52. C:\WINDOWS\System32\cryptsp.dll:cryptsp.dll (00007FFD1C9A0000), size: 94208 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
53. C:\WINDOWS\SYSTEM32\OPENGL32.dll:OPENGL32.dll (00007FFD03F80000), size: 1400832 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.387
54. C:\WINDOWS\SYSTEM32\D3DCOMPILER_47.dll:D3DCOMPILER_47.dll (00007FFD157B0000), size: 4530176 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
55. C:\WINDOWS\SYSTEM32\VCRUNTIME140.dll:VCRUNTIME140.dll (00007FFD08170000), size: 94208 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 14.24.28127.4
56. C:\WINDOWS\System32\WINTRUST.dll:WINTRUST.dll (00007FFD1BA70000), size: 376832 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.387
57. C:\WINDOWS\SYSTEM32\MSVCP140.dll:MSVCP140.dll (00007FFD07890000), size: 626688 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 14.24.28127.4
58. C:\WINDOWS\SYSTEM32\MSVCP100.dll:MSVCP100.dll (000000006F970000), size: 622592 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.40219.325
59. C:\WINDOWS\SYSTEM32\VERSION.dll:VERSION.dll (00007FFD11E50000), size: 40960 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.18362.1
60. C:\WINDOWS\SYSTEM32\MSVCR100.dll:MSVCR100.dll (000000006F890000), size: 860160 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 10.0.40219.325
61. C:\Program Files\Unity\Hub\Editor\2019.3.0f6\Editor\embree.dll:embree.dll (00007FFC9FEC0000), size: 16711680 (result: 0), SymType: '-deferred-', PDB: '', fileVersion: 2.14.0.0
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150.  
151. ========== OUTPUTTING STACK TRACE ==================
152.  
153. 0x00007FFC54372414 (opencvforunity) tracking_TrackerCSRT_setInitialMask_10
154. 0x00007FFC53A6EA12 (opencvforunity) objdetect_CascadeClassifier_empty_10
155. 0x00000235BDF8441A (Mono JIT Code) (wrapper managed-to-native) OpenCVForUnity.ObjdetectModule.CascadeClassifier:objdetect_CascadeClassifier_empty_10 (intptr)
156. 0x00000235BDF842CB (Mono JIT Code) [C:\Users\ce\Repos\HC4\Assets\ThirdParty\OpenCVForUnity\org\opencv\objdetect\CascadeClassifier.cs:124] OpenCVForUnity.ObjdetectModule.CascadeClassifier:empty ()
157. 0x00000235BDF7E48B (Mono JIT Code) [C:\Users\ce\Repos\HC4\Assets\ThirdParty\OpenCVForUnity\Examples\ContribModules\face\FaceMarkExample\FaceMarkExample.cs:139] OpenCVForUnityExample.FaceMarkExample:Run ()
158. 0x00000235BDF7D7FB (Mono JIT Code) [C:\Users\ce\Repos\HC4\Assets\ThirdParty\OpenCVForUnity\Examples\ContribModules\face\FaceMarkExample\FaceMarkExample.cs:100] OpenCVForUnityExample.FaceMarkExample:Start ()
159. 0x0000023651472168 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
160. 0x00007FFC9672CBB0 (mono-2.0-bdwgc) [c:\build\output\unity-technologies\mono\mono\mini\mini-runtime.c:2809] mono_jit_runtime_invoke
161. 0x00007FFC966B2122 (mono-2.0-bdwgc) [c:\build\output\unity-technologies\mono\mono\metadata\object.c:2921] do_runtime_invoke
162. 0x00007FFC966BB11F (mono-2.0-bdwgc) [c:\build\output\unity-technologies\mono\mono\metadata\object.c:2968] mono_runtime_invoke
163. 0x00007FF72ADE5BAE (Unity) scripting_method_invoke
164. 0x00007FF72ADDF88D (Unity) ScriptingInvocation::Invoke
165. 0x00007FF72ADAEABC (Unity) MonoBehaviour::InvokeMethodOrCoroutineChecked
166. 0x00007FF72ADAEBE8 (Unity) MonoBehaviour::InvokeMethodOrCoroutineChecked
167. 0x00007FF72ADAA5F9 (Unity) MonoBehaviour::DelayedStartCall
168. 0x00007FF72A462988 (Unity) DelayedCallManager::Update
169. 0x00007FF72A88E05F (Unity) `InitPlayerLoopCallbacks'::`2'::EarlyUpdateScriptRunDelayedStartupFrameRegistrator::Forward
170. 0x00007FF72A8780C8 (Unity) ExecutePlayerLoop
171. 0x00007FF72A87819D (Unity) ExecutePlayerLoop
172. 0x00007FF72A87D394 (Unity) PlayerLoop
173. 0x00007FF728C957BB (Unity) PlayerLoopController::UpdateScene
174. 0x00007FF728C7E76D (Unity) PlayerLoopController::EnterPlayMode
175. 0x00007FF728C90CB4 (Unity) PlayerLoopController::SetIsPlaying
176. 0x00007FF728C93A6F (Unity) Application::TickTimer
177. 0x00007FF7295D6C10 (Unity) MainMessageLoop
178. 0x00007FF7295E09AA (Unity) WinMain
179. 0x00007FF72C55C602 (Unity) __scrt_common_main_seh
180. 0x00007FFD1CCF7BD4 (KERNEL32) BaseThreadInitThunk
181. 0x00007FFD1EB4CED1 (ntdll) RtlUserThreadStart
182.  
183. ========== END OF STACKTRACE ===========
184.  

 

Yes i do. but I dont understand the tutorial to build opencv android. I always got error.

 

help me to fix this.

CvException: CvType.CV_32SC2 != m.type() || m.cols()!=1
Mat [ -1*-1*CV_8UC1, isCont=False, isSubmat=False, nativeObj=0x971494256, dataAddr=0x0 ]
OpenCVForUnity.UtilsModule.Converters.Mat_to_vector_Mat (OpenCVForUnity.CoreModule.Mat m, System.Collections.Generic.List`1 mats) (at Assets/OpenCVForUnity/org/opencv/utils/Converters.cs:336)
OpenCVForUnity.UtilsModule.Converters.Mat_to_vector_vector_DMatch (OpenCVForUnity.CoreModule.Mat m, System.Collections.Generic.List`1 lvdm) (at Assets/OpenCVForUnity/org/opencv/utils/Converters.cs:900)
OpenCVForUnity.Features2dModule.DescriptorMatcher.knnMatch (OpenCVForUnity.CoreModule.Mat queryDescriptors, System.Collections.Generic.List`1 matches, Int32 k) (at Assets/OpenCVForUnity/org/opencv/features2d/DescriptorMatcher.cs:405)
OpenCVMarkerLessAR.PatternDetector.getMatches (OpenCVForUnity.CoreModule.Mat queryDescriptors, OpenCVForUnity.CoreModule.MatOfDMatch matches) (at Assets/MarkerLessARExample/MarkerLessAR/PatternDetector.cs:378)
OpenCVMarkerLessAR.PatternDetector.findPattern (OpenCVForUnity.CoreModule.Mat image, OpenCVMarkerLessAR.PatternTrackingInfo info) (at Assets/MarkerLessARExample/MarkerLessAR/PatternDetector.cs:226)
MarkerLessARExample.WebCamTextureMarkerLessARExample.Update () (at Assets/MarkerLessARExample/WebCamTextureMarkerLessARExample/WebCamTextureMarkerLessARExample.cs:339)

 

I purchased your asset
I tested the YoloObject detection scene and it works fine with the yolov3-tiny model (demo model)
But when i integrate my custom yolov3-tiny(trained with custom dataset), it doesnt detect anything. Do i have to change something in camera frames or something like that
Also Do you have a scene with object detection that takes as an input frozen_graph.pb for faster_rcnn (not mask_rcnn)?

 

I think my problem is the same as this

but I want to provide my code. Maybe this helps.

This is what I wrote https://pastebin.com/x5hgTGfT, inspired by https://docs.opencv.org/3.4/d7/dff/tutorial_feature_homography.html but using ORB instead of SURF.

Code (CSharp):

1.  
2. CvException: CvType.CV_32SC2 != m.type() ||  m.cols()!=1
3. Mat [ -1*-1*CV_8UC1, isCont=False, isSubmat=False, nativeObj=0x1437861847440, dataAddr=0x0 ]
4. OpenCVForUnity.UtilsModule.Converters.Mat_to_vector_Mat (OpenCVForUnity.CoreModule.Mat m, System.Collections.Generic.List`1[T] mats) (at Assets/OpenCVForUnity/org/opencv/utils/Converters.cs:336)
5. OpenCVForUnity.UtilsModule.Converters.Mat_to_vector_vector_DMatch (OpenCVForUnity.CoreModule.Mat m, System.Collections.Generic.List`1[T] lvdm) (at Assets/OpenCVForUnity/org/opencv/utils/Converters.cs:900)
6. OpenCVForUnity.Features2dModule.DescriptorMatcher.knnMatch (OpenCVForUnity.CoreModule.Mat queryDescriptors, OpenCVForUnity.CoreModule.Mat trainDescriptors, System.Collections.Generic.List`1[T] matches, System.Int32 k) (at Assets/OpenCVForUnity/org/opencv/features2d/DescriptorMatcher.cs:332)
7. FeatureDetection.FindMarkerInImage (System.Boolean drawDetectedMarkers) (at Assets/Scripts/FeatureDetection.cs:71)
8. FeatureDetection.Update () (at Assets/Scripts/FeatureDetection.cs:54)

Interestingly, I get no error, if I use

matcher.knnMatch(desObject, knnMatches, 2);

instead of

matcher.knnMatch(desObject, desScene, knnMatches, 2);

I use UnityVersion 2019.1.3f1 and OpenCVForUnity Version 2.3.8

see the below quote for a more specific analysis.

 

Is "haarcascade_frontalface_alt.xml" in the "Assets / StreamingAssets" folder?

 

I have purchased the OpenCV assets, but am having problems running the FaceTrackerARExample script in the editor or as a standalone windows app.

Line 558 in FaceTrackerARExample.cs is where the problem is.

Code (CSharp):

1. if (tvec.get (2, 0) [0] > 0 && tvec.get (2, 0) [0] < 1200 * ((float)rgbaMat.cols () / (float)webCamTextureToMatHelper.requestedWidth)) {

It seems like tvec.get (2, 0) is returning null. I can fix the error by adding a null check, but I am not able to get the head overlay or eye or mouth effects to turn on and track my face. It seems like the variable tvec.get (2, 0) is always returning null.

What can I do to get this example to work. Do I need the Dlib FaceLandmark Detector?

 

I am using the ArUco Module and cannot figure out how to get the marker IDs of the detected markers.

Code (CSharp):

1. Aruco.detectMarkers(rgbMat, dictionary, corners, ids, detectorParams, rejectedCorners, camMatrix, distCoeffs);

The detectMarkers method produces an ids Mat object, but that object does not seem to contain the ids of the detected markers. I have not been able to find anything in the API that will get the target ids. I did notice one answer in this forum that involved going through a list (or array) of​

 

Ι made maskRnnExample scene to take Mat from camera of the target device device, based on the DnnObjectDetectionExampleWebCamtexture.cs and i put a faster-RCNN
Everything work fine but the frames of the camera are very low (5fps), how can i fix it

Code (CSharp):

1. #if !(PLATFORM_LUMIN && !UNITY_EDITOR)
2.  
3. #if !UNITY_WSA_10_0
4.  
5. using System;
6. using System.Collections;
7. using System.Collections.Generic;
8. using System.Linq;
9. using UnityEngine;
10. using UnityEngine.UI;
11. using UnityEngine.SceneManagement;
12. using OpenCVForUnity.CoreModule;
13. using OpenCVForUnity.DnnModule;
14. using OpenCVForUnity.ImgprocModule;
15. using OpenCVForUnity.UnityUtils;
16. using OpenCVForUnity.UnityUtils.Helper;
17.  
18. namespace OpenCVForUnityExample
19. {
20.     /// <summary>
21.     /// Dnn ObjectDetection Example
22.     /// Referring to https://github.com/opencv/opencv/blob/master/samples/dnn/object_detection.cpp.
23.     /// </summary>
24.     [RequireComponent(typeof(WebCamTextureToMatHelper))]
25.     public class FasterRCNNCamExample : MonoBehaviour
26.     {
27.  
28.         [TooltipAttribute("Path to a binary file of model contains trained weights. It could be a file with extensions .caffemodel (Caffe), .pb (TensorFlow), .t7 or .net (Torch), .weights (Darknet).")]
29.         public string model;
30.  
31.         [TooltipAttribute("Path to a text file of model contains network configuration. It could be a file with extensions .prototxt (Caffe), .pbtxt (TensorFlow), .cfg (Darknet).")]
32.         public string config;
33.  
34.         [TooltipAttribute("Optional path to a text file with names of classes to label detected objects.")]
35.         public string classes;
36.  
37.         [TooltipAttribute("Optional list of classes to label detected objects.")]
38.         public List<string> classesList;
39.  
40.         [TooltipAttribute("Confidence threshold.")]
41.         public float confThreshold;
42.  
43.         [TooltipAttribute("Preprocess input image by multiplying on a scale factor.")]
44.         public float scale;
45.  
46.         [TooltipAttribute("Preprocess input image by subtracting mean values. Mean values should be in BGR order and delimited by spaces.")]
47.         public Scalar mean;
48.  
49.         [TooltipAttribute("Indicate that model works with RGB input images instead BGR ones.")]
50.         public bool swapRB;
51.  
52.         [TooltipAttribute("Preprocess input image by resizing to a specific width.")]
53.         public int inpWidth;
54.  
55.         [TooltipAttribute("Preprocess input image by resizing to a specific height.")]
56.         public int inpHeight;
57.  
58.         Texture2D texture;
59.         WebCamTextureToMatHelper webCamTextureToMatHelper;
60.         Mat bgrMat;
61.         Net net;
62.         FpsMonitor fpsMonitor;
63.  
64.         List<string> classNames;
65.         List<string> outBlobNames;
66.         List<string> outBlobTypes;
67.  
68.         string classes_filepath;
69.         string config_filepath;
70.         string model_filepath;
71.  
72. #if UNITY_WEBGL && !UNITY_EDITOR
73.         IEnumerator getFilePath_Coroutine;
74. #endif
75.  
76.         // Use this for initialization
77.         void Start()
78.         {
79.             fpsMonitor = GetComponent<FpsMonitor>();
80.  
81.             webCamTextureToMatHelper = gameObject.GetComponent<WebCamTextureToMatHelper>();
82.             Application.targetFrameRate = 30;
83.  
84. #if UNITY_WEBGL && !UNITY_EDITOR
85.             getFilePath_Coroutine = GetFilePath();
86.             StartCoroutine(getFilePath_Coroutine);
87. #else
88.             if (!string.IsNullOrEmpty(classes)) classes_filepath = Utils.getFilePath("dnn/" + classes);
89.             if (!string.IsNullOrEmpty(config)) config_filepath = Utils.getFilePath("dnn/" + config);
90.             if (!string.IsNullOrEmpty(model)) model_filepath = Utils.getFilePath("dnn/" + model);
91.             Run();
92. #endif
93.         }
94.  
95. #if UNITY_WEBGL && !UNITY_EDITOR
96.         private IEnumerator GetFilePath()
97.         {
98.             if (!string.IsNullOrEmpty(classes))
99.             {
100.                 var getFilePathAsync_0_Coroutine = Utils.getFilePathAsync("dnn/" + classes, (result) =>
101.                 {
102.                     classes_filepath = result;
103.                 });
104.                 yield return getFilePathAsync_0_Coroutine;
105.             }
106.  
107.             if (!string.IsNullOrEmpty(config))
108.             {
109.                 var getFilePathAsync_1_Coroutine = Utils.getFilePathAsync("dnn/" + config, (result) =>
110.                 {
111.                     config_filepath = result;
112.                 });
113.                 yield return getFilePathAsync_1_Coroutine;
114.             }
115.  
116.             if (!string.IsNullOrEmpty(model))
117.             {
118.                 var getFilePathAsync_2_Coroutine = Utils.getFilePathAsync("dnn/" + model, (result) =>
119.                 {
120.                     model_filepath = result;
121.                 });
122.                 yield return getFilePathAsync_2_Coroutine;
123.             }
124.  
125.             getFilePath_Coroutine = null;
126.  
127.             Run();
128.         }
129. #endif
130.  
131.         // Use this for initialization
132.         void Run()
133.         {
134.             //if true, The error log of the Native side OpenCV will be displayed on the Unity Editor Console.
135.             Utils.setDebugMode(true);
136.  
137.             if (!string.IsNullOrEmpty(classes))
138.             {
139.                 classNames = readClassNames(classes_filepath);
140.                 if (classNames == null)
141.                 {
142.                     Debug.LogError(classes_filepath + " is not loaded. Please see \"StreamingAssets/dnn/setup_dnn_module.pdf\". ");
143.                 }
144.             }
145.             else if (classesList.Count > 0)
146.             {
147.                 classNames = classesList;
148.             }
149.  
150.             if (string.IsNullOrEmpty(config_filepath) || string.IsNullOrEmpty(model_filepath))
151.             {
152.                 Debug.LogError(config_filepath + " or " + model_filepath + " is not loaded. Please see \"StreamingAssets/dnn/setup_dnn_module.pdf\". ");
153.             }
154.             else
155.             {
156.                 net = Dnn.readNetFromTensorflow(model_filepath, config_filepath);
157.  
158.                 outBlobNames = getOutputsNames(net);
159.  
160.                 outBlobTypes = getOutputsTypes(net);
161.             }
162.  
163.  
164. #if UNITY_ANDROID && !UNITY_EDITOR
165.             // Avoids the front camera low light issue that occurs in only some Android devices (e.g. Google Pixel, Pixel2).
166.             webCamTextureToMatHelper.avoidAndroidFrontCameraLowLightIssue = true;
167. #endif
168.             webCamTextureToMatHelper.Initialize();
169.         }
170.  
171.         /// <summary>
172.         /// Raises the webcam texture to mat helper initialized event.
173.         /// </summary>
174.         public void OnWebCamTextureToMatHelperInitialized()
175.         {
176.             Debug.Log("OnWebCamTextureToMatHelperInitialized");
177.  
178.             Mat webCamTextureMat = webCamTextureToMatHelper.GetMat();
179.  
180.  
181.             texture = new Texture2D(webCamTextureMat.cols(), webCamTextureMat.rows(), TextureFormat.RGBA32, false);
182.  
183.             gameObject.GetComponent<Renderer>().material.mainTexture = texture;
184.  
185.             gameObject.transform.localScale = new Vector3(webCamTextureMat.cols(), webCamTextureMat.rows(), 1);
186.             Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
187.  
188.             if (fpsMonitor != null)
189.             {
190.                 fpsMonitor.Add("width", webCamTextureMat.width().ToString());
191.                 fpsMonitor.Add("height", webCamTextureMat.height().ToString());
192.                 fpsMonitor.Add("orientation", Screen.orientation.ToString());
193.             }
194.  
195.  
196.             float width = webCamTextureMat.width();
197.             float height = webCamTextureMat.height();
198.  
199.             float widthScale = (float)Screen.width / width;
200.             float heightScale = (float)Screen.height / height;
201.             if (widthScale < heightScale)
202.             {
203.                 Camera.main.orthographicSize = (width * (float)Screen.height / (float)Screen.width) / 2;
204.             }
205.             else
206.             {
207.                 Camera.main.orthographicSize = height / 2;
208.             }
209.  
210.  
211.             bgrMat = new Mat(webCamTextureMat.rows(), webCamTextureMat.cols(), CvType.CV_8UC3);
212.         }
213.  
214.         public void OnWebCamTextureToMatHelperDisposed()
215.         {
216.             Debug.Log("OnWebCamTextureToMatHelperDisposed");
217.  
218.             if (bgrMat != null)
219.                 bgrMat.Dispose();
220.  
221.             if (texture != null)
222.             {
223.                 Texture2D.Destroy(texture);
224.                 texture = null;
225.             }
226.         }
227.  
228.         public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
229.         {
230.             Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
231.         }
232.  
233.         // Update is called once per frame
234.         void Update()
235.         {
236.             if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
237.             {
238.  
239.                 Mat rgbaMat = webCamTextureToMatHelper.GetMat();
240.  
241.                 if (net == null)
242.                 {
243.                     Imgproc.putText(rgbaMat, "model file is not loaded.", new Point(5, rgbaMat.rows() - 30), Imgproc.FONT_HERSHEY_SIMPLEX, 0.7, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
244.                     Imgproc.putText(rgbaMat, "Please read console message.", new Point(5, rgbaMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.7, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
245.                 }
246.                 else
247.                 {
248.  
249.                     Imgproc.cvtColor(rgbaMat, bgrMat, Imgproc.COLOR_RGBA2BGR);
250.  
251.                     // Create a 4D blob from a frame.
252.                     Size inpSize = new Size(inpWidth > 0 ? inpWidth : bgrMat.cols(),
253.                                        inpHeight > 0 ? inpHeight : bgrMat.rows());
254.                     Mat blob = Dnn.blobFromImage(bgrMat, scale, inpSize, mean, true, false);
255.  
256.                     float frameWidth = bgrMat.cols();
257.                     float frameHeight = bgrMat.rows();
258.  
259.                     // Run a model.
260.                     net.setInput(blob);
261.  
262.  
263.                     TickMeter tm = new TickMeter();
264.                     tm.start();
265.  
266.                     List<Mat> outputBlobs = new List<Mat>();
267.                     net.forward(outputBlobs, outBlobNames);
268.  
269.                     Mat boxes = outputBlobs[0];
270.                     int numDetections = boxes.size(2);
271.  
272.                     //reshape from 4D to two 2D.
273.                     float[] data = new float[boxes.size(3)];
274.                     boxes = boxes.reshape(1, (int)boxes.total() / boxes.size(3));
275.  
276.                     tm.stop();
277.  
278.                     processMat(rgbaMat, data, boxes, blob);
279.  
280.                     /*Imgproc.cvtColor(rgbaMat, bgrMat, Imgproc.COLOR_BGR2RGB);
281.  
282.                     Texture2D texture = new Texture2D(img.cols(), img.rows(), TextureFormat.RGBA32, false);
283.  
284.                     Utils.matToTexture2D(img, texture);
285.  
286.                     gameObject.GetComponent<Renderer>().material.mainTexture = texture;
287.  
288.                     net.Dispose();*/
289.  
290.                     for (int i = 0; i < outputBlobs.Count; i++)
291.                     {
292.                         outputBlobs[i].Dispose();
293.                     }
294.                     blob.Dispose();
295.                 }
296.  
297.                 Utils.fastMatToTexture2D(rgbaMat, texture);
298.             }
299.         }
300.  
301.         private void processMat(Mat frame, float[] data, Mat boxes, Mat blob)
302.         {
303.             for (int i = 0; i < boxes.rows(); i++)
304.             {
305.  
306.                 boxes.get(i, 0, data);
307.  
308.                 float score = data[2];
309.  
310.                 if (score > confThreshold)
311.                 {
312.                     int class_id = (int)(data[1]);
313.  
314.                     if (class_id == 3)
315.                        continue;
316.  
317.                     float left = (float)(data[3] * frame.cols());
318.                     float top = (float)(data[4] * frame.rows());
319.                     float right = (float)(data[5] * frame.cols());
320.                     float bottom = (float)(data[6] * frame.rows());
321.  
322.                     left = (int)Mathf.Max(0, Mathf.Min(left, frame.cols() - 1));
323.                     top = (int)Mathf.Max(0, Mathf.Min(top, frame.rows() - 1));
324.                     right = (int)Mathf.Max(0, Mathf.Min(right, frame.cols() - 1));
325.                     bottom = (int)Mathf.Max(0, Mathf.Min(bottom, frame.rows() - 1));
326.  
327.                     Debug.Log("class_id: " + class_id + " class_name " + classNames[class_id] + " left: " + left + " top: " + top + " right: " + right + " bottom: " + bottom);
328.  
329.                     //draw boxes
330.                     drawPred(class_id, confThreshold, (int)left, (int)top, (int)right, (int)bottom, frame);
331.  
332.                 }
333.             }
334.  
335.             boxes.Dispose();
336.             blob.Dispose();
337.         }
338.  
339.         /// <summary>
340.         /// Raises the destroy event.
341.         /// </summary>
342.         void OnDestroy()
343.         {
344.             webCamTextureToMatHelper.Dispose();
345.  
346.             if (net != null)
347.                 net.Dispose();
348.  
349.             Utils.setDebugMode(false);
350.  
351. #if UNITY_WEBGL && !UNITY_EDITOR
352.             if (getFilePath_Coroutine != null)
353.             {
354.                 StopCoroutine(getFilePath_Coroutine);
355.                 ((IDisposable)getFilePath_Coroutine).Dispose();
356.             }
357. #endif
358.         }
359.  
360.         /// <summary>
361.         /// Reads the class names.
362.         /// </summary>
363.         /// <returns>The class names.</returns>
364.         /// <param name="filename">Filename.</param>
365.         private List<string> readClassNames(string filename)
366.         {
367.             List<string> classNames = new List<string>();
368.  
369.             System.IO.StreamReader cReader = null;
370.             try
371.             {
372.                 cReader = new System.IO.StreamReader(filename, System.Text.Encoding.Default);
373.  
374.                 while (cReader.Peek() >= 0)
375.                 {
376.                     string name = cReader.ReadLine();
377.                     classNames.Add(name);
378.                 }
379.             }
380.             catch (System.Exception ex)
381.             {
382.                 Debug.LogError(ex.Message);
383.                 return null;
384.             }
385.             finally
386.             {
387.                 if (cReader != null)
388.                     cReader.Close();
389.             }
390.  
391.             return classNames;
392.         }
393.  
394.         /// <summary>
395.         /// Draws the pred.
396.         /// </summary>
397.         /// <param name="classId">Class identifier.</param>
398.         /// <param name="conf">Conf.</param>
399.         /// <param name="left">Left.</param>
400.         /// <param name="top">Top.</param>
401.         /// <param name="right">Right.</param>
402.         /// <param name="bottom">Bottom.</param>
403.         /// <param name="frame">Frame.</param>
404.         private void drawPred(int classId, float conf, int left, int top, int right, int bottom, Mat frame)
405.         {
406.             Imgproc.rectangle(frame, new Point(left, top), new Point(right, bottom), new Scalar(0, 255, 0, 255), 2);
407.  
408.             string label = conf.ToString();
409.             if (classNames != null && classNames.Count != 0)
410.             {
411.                 if (classId < (int)classNames.Count)
412.                 {
413.                     label = classNames[classId] + ": " + label;
414.                 }
415.             }
416.  
417.             int[] baseLine = new int[1];
418.             Size labelSize = Imgproc.getTextSize(label, Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, 1, baseLine);
419.  
420.             top = Mathf.Max(top, (int)labelSize.height);
421.             Imgproc.rectangle(frame, new Point(left, top - labelSize.height),
422.                 new Point(left + labelSize.width, top + baseLine[0]), Scalar.all(255), Core.FILLED);
423.             Imgproc.putText(frame, label, new Point(left, top), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar(0, 0, 0, 255));
424.         }
425.  
426.         /// <summary>
427.         /// Gets the outputs names.
428.         /// </summary>
429.         /// <returns>The outputs names.</returns>
430.         /// <param name="net">Net.</param>
431.         private List<string> getOutputsNames(Net net)
432.         {
433.             List<string> names = new List<string>();
434.  
435.  
436.             MatOfInt outLayers = net.getUnconnectedOutLayers();
437.             for (int i = 0; i < outLayers.total(); ++i)
438.             {
439.                 names.Add(net.getLayer(new DictValue((int)outLayers.get(i, 0)[0])).get_name());
440.             }
441.             outLayers.Dispose();
442.  
443.             return names;
444.         }
445.  
446.         /// <summary>
447.         /// Gets the outputs types.
448.         /// </summary>
449.         /// <returns>The outputs types.</returns>
450.         /// <param name="net">Net.</param>
451.         private List<string> getOutputsTypes(Net net)
452.         {
453.             List<string> types = new List<string>();
454.  
455.  
456.             MatOfInt outLayers = net.getUnconnectedOutLayers();
457.             for (int i = 0; i < outLayers.total(); ++i)
458.             {
459.                 types.Add(net.getLayer(new DictValue((int)outLayers.get(i, 0)[0])).get_type());
460.             }
461.             outLayers.Dispose();
462.  
463.             return types;
464.         }
465.     }
466. }
467. #endif
468.  
469. #endif

Here is my script