I am using the nppiWarpPerspective_8u_C1R() call to obtain a warped image. The destination ROI is set by using bounds returned from nppiGetPerspectivebound() after I obtain the transform coefficients. However, the image is clipped whenever the x,y of DstRoi(left bottom corner) is not 0 i.e gt 0. Increasing the width or height of dstRoi makes no difference. How do I tell the call to return me the full image after the warp? Any help appreciated.