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Camera Calibration Matrix Accuracy

Discussion in 'Computer Vision' started by Avv2, Jun 21, 2022.

  1. Avv2

    Avv2

    Joined:
    Jun 21, 2022
    Posts:
    1
    Hello,
    When we do camera calibration, we have to find calibration matrix $M$, which is found by first finding extrinsic matrix and then intrinsic matrix. To validate the accuracy of calibration matrix, we compare groundtruth projections $points \times intrinsic-matrix$ against prediction $points \times extrinsic-matrix \times intrinsic-matrix$. To illustrate results, I plotted the figure below.
    upload_2022-6-21_10-8-54.png
    **Question**: Why the projections from $points \times intrinsic-matrix$ are regarded as the groundtruth please?
     
    Avv2, Jun 21, 2022
    #1