motionComp.m
上传用户:cxsjwj
上传日期:2022-08-09
资源大小:34k
文件大小:1k
- % Computes motion compensated image using the given motion vectors
- %
- % Input
- % imgI : The reference image
- % motionVect : The motion vectors
- % mbSize : Size of the macroblock
- %
- % Ouput
- % imgComp : The motion compensated image
- %
- % Written by Aroh Barjatya
- function imgComp = motionComp(imgI, motionVect, mbSize)
- [row col] = size(imgI);
- % we start off from the top left of the image
- % we will walk in steps of mbSize
- % for every marcoblock that we look at we will read the motion vector
- % and put that macroblock from refernce image in the compensated image
- mbCount = 1;
- for i = 1:mbSize:row-mbSize+1
- for j = 1:mbSize:col-mbSize+1
-
- % dy is row(vertical) index
- % dx is col(horizontal) index
- % this means we are scanning in order
-
- dy = motionVect(1,mbCount);
- dx = motionVect(2,mbCount);
- refBlkVer = i + dy;
- refBlkHor = j + dx;
- imageComp(i:i+mbSize-1,j:j+mbSize-1) = imgI(refBlkVer:refBlkVer+mbSize-1, refBlkHor:refBlkHor+mbSize-1);
-
- mbCount = mbCount + 1;
- end
- end
- imgComp = imageComp;