Patent ID: 6885706

Claim:
A method for promoting temporal resolution of sequential images, comprising the steps of: choosing a first visual frame of a train of sequential images and splitting the first visual frame into a plurality of visual blocks according to a predetermined block size; choosing a second visual frame of the train of sequential images; searching in the second visual frame for a most resembling visual block corresponding to a visual block in the first visual frame for every visual block in the first visual frame; estimating a respective vector displacement of corresponding visual blocks of the first and second visual frames for every visual block; rebuilding a visual frame according to the estimated vector displacement and estimating respective pixel values of corresponding visual blocks of the first and second visual frames at a time point for every visual block and combining the estimated pixel values of visual blocks to create a rebuilt visual frame; applying a median-value-filtering procedure upon the rebuilt visual frame to create a median-value-filtered visual frame; and applying a spatial low-pass filtering procedure upon the median-value-filtered visual frame; wherein for each pixel in a visual block of the rebuilt visual frame, the median-value-filtering procedure comprises the steps of; comparing pixel values of corresponding pixels of corresponding blocks in the first visual frame, the second visual frame and the rebuilt visual frame to generate a median pixel value; and performing a mean operation on the median pixel value and the pixel value of a corresponding pixel in the rebuilt visual frame to generate a pixel value for the median-value-filtered visual frame.