Back projection matrix construction

[fouad1995]

Hello.

I'm asking about how do you construct the matrix of back projection ? Do you extract the homography and then use it , and if so why you use x and y inside first matrix oMatA ? I'm a little bit confused about this part and I would be pleased if you share the reference of this mathematical equation.

Thanks in advance

[zhengthomastang]

You could find the source code for camera calibration here: https://github.com/zhengthomastang/2018AICity_TeamUW/tree/master/Track1/2_CAM_CAL

I also have an improved method here: https://github.com/zhengthomastang/Cal_PnP

[fouad1995]

You could find the source code for camera calibration here: https://github.com/zhengthomastang/2018AICity_TeamUW/tree/master/Track1/2_CAM_CAL

I also have an improved method here: https://github.com/zhengthomastang/Cal_PnP

Thanks for your reply
The second method provide only homography matrix not like the first method which provide [intrinsic , extrinsic and projection matrix]