We just want to realize following targets through VPAC LDC:
1 input frontview image -- > VPAC(ldc) --> output birdview image
2 input birdview image -- > VPAC(ldc) --> output frontview image
Take two pictures for example:
frontview image
https://www.hindawi.com/journals/js/2016/4058093/fig22/
birdview image
https://www.hindawi.com/journals/js/2016/4058093/fig23/
Thus, I have following issues to be resloved:
1 Can you offer us demos to realize upper functions?
If you can offer demos, we can apply it quickly to slove this problem.
2 If you cann't, you should tell us how to realize?
We find that We can use openvx api tivxVpacLdcNode, which has a para for warp_matrix needed to be filled.
For perspective transformation, Warp matrix is a 3x3 matrix with 9th value always = 1. Then, we just to make
sure 8 parameters which are referred to as {A, B, C, D, E F, G, H}. How to obtain these values?
At first, we use cv2.warpPerspective interface to realize c models for upper functions, we verify right 3*3I
perspective matrix, but how to translate this matrix to {A, B, C, D, E F, G, H}, we try and try again, but always
failed, please tell me why?
At lase, in your documentation, {G, H} should use S16Q23, which format is unknown for us, can you explain
in detail?