问题
I am working on a Open CV Android project, the aim is the user can take a picture of a snooker table and I have to find balls positions on image retrieved. When I have four corners of the table on my picture, it is pretty easy, I have already coded table, balls and colors detection, and I use getPerspectiveTransform() function to warp my table on a rectangle. Then I have balls center position on the rectangle.
If I have three corners, I think I have to extend table edges and find lines intersection to get my fourth corner.
Problem : With two corners, I am trying to find a solution for 2 weeks and I am not sure it is possible. I have the edge table dimensions (L=2.80m, l=1.40m) and balls diameter (d=61.5mm)
I am not asking for a code solution (even if it's still better), but if someone have a way to resolve that problem, it would be very nice.
来源：https://stackoverflow.com/questions/29181863/getperspectivetransform-on-a-non-entire-quadrangle