In Olson’s 2011 AprilTag paper he states that the:
" … corner estimates are accurate to a small fraction of a pixel."
I’ve been using the apriltag.corners() to get the corner positions of the tags but they are only returned with pixel (integer) precision.
Could you change this in the C/C++ firmware so that the corner positions are returned as floating point - tenths or hundredths of a pixel precision ?
I would like to use the OpenMV cam and AprilTags to measure camera position.
I was hoping to take the corner positions from OpenMV into OpenCV and, together with the ‘known’ corner positions for a printed array of tags, use them with solvePnP to calibrate the output from apriltag.x_ , y_ and z_translation.
Please note that this is not the same as camera calibration for fx, fy, cx and cy - I’ve done that separately.