A machine method for compensating for non-linear picture transformations,eg.zoom and pan,in a video image motion compensation system

摘要

PCT No. PCT/GB93/00600 Sec. 371 Date Mar. 3, 1995 Sec. 102(e) Date Mar. 3, 1995 PCT Filed Mar. 24, 1993 PCT Pub. No. WO93/19430 PCT Pub. Date Sep. 30, 1993Non-linear picture transformations in a video image motion compensation system are caused by camera zooms or rotations. Sets of trial vectors are derived for each block of the image representing peak correlation values between adjacent images in the sequence. A constant representing the non-linear transformation is estimated using the sets of trial vectors and this enables a vector representing the non-linear transformation to be added to the trial vector list for each block.