Hello!
I would like to ask, where exactly the angle computed by carToPolar function points? For example, if I have a 3x3 MAT matrix, and the angle at point [1,1] is 45°, it will point to [2,2] or [0,2] ?
Thank you
Basically it the output is calculated clockwise starting from the x - axis. This is dependant on how the axes in OpenCV are actually visualized. So take a look at the following picture.
This means that if a point [1,1] has a gradient angle of 45°, it will point towards the pixel that is at 45° looking from the coordinate center. In this case it will be [2,2]. An angle of 90° would point to [2,0].
If it helped you, accept the answer, so that this topic appears solved. You are welcome!
Asked: Apr 8 '13
Seen: 3,582 times
Last updated: Apr 08 '13
