Method for determining feature points based on hierarchical block searching technique

摘要

A novel method for determining feature points comprises the steps of detecting edge points from the video frame; selecting, as a processing block, a block having a maximum number of edge points within said each search region; dividing the processing block into a number of candidate blocks; and selecting a candidate block having a maximum number of edge points within the processing block to determine the center pixel of the selected candidate block as one of the feature points.