Calib3d.findChessboardCorners always returns true about hololenswithopencvforunityexample

[EnoxSoftware]

Thank you for your inquiry.
Does your code always return true even when executed in Editor?

Also,
Does this code work correctly?

        Texture2D imgTexture = Resources.Load ("chessboard") as Texture2D;
        //Texture2D imgTexture = Resources.Load ("lena") as Texture2D;
        
        Mat imgMat = new Mat (imgTexture.height, imgTexture.width, CvType.CV_8UC1);
        
        Utils.texture2DToMat (imgTexture, imgMat);
        Debug.Log ("imgMat.ToString() " + imgMat.ToString ());


        Size patternSize = new Size (9, 6);
        MatOfPoint2f corners = new MatOfPoint2f ();
        bool flag = Calib3d.findChessboardCorners (imgMat, patternSize, corners);

        Debug.Log ("flag " + flag);


        Texture2D texture = new Texture2D (imgMat.cols (), imgMat.rows (), TextureFormat.RGBA32, false);
        Utils.matToTexture2D (imgMat, texture);
    
        gameObject.GetComponent<Renderer> ().material.mainTexture = texture;

[bobbycho]

Thank you for your guide. I will test your code right now.

Thanks again,
Bobby

[bobbycho]

Although your code works correctly in the Editor, it does not work on HoloLens.
It always returns true as I mentioned before.
Thanks,
Bobby

[EnoxSoftware]

Thank you very much for reporting.
I succeeded in reproducing this bug. I am investigating the cause now.

For now, It is possible to determine if a corner has been detected using this code.

Size patternSize = new Size (9, 6);
MatOfPoint2f corners = new MatOfPoint2f ();
Calib3d.findChessboardCorners (imgMat, patternSize, corners);
if(corners.rows() == 0){
    return false;
}else{
    return true;
}