OpenCV warpperspective

Question

For some reason whenever I use OpenCV\'s warpPerspective() function, the final warped image does not contain everything in the original image. The left part of the image see

Answer 1

I have done one method... It is working.

  perspectiveTransform(obj_corners,scene_corners,H);
int maxCols(0),maxRows(0);

 for(int i=0;i

I just find the maximum of the x points and y points respectively and put it on

warpPerspective( tmp, transformedImage, homography, Size( maxCols, maxRows ) );