Abstract

Info

Author(s):: DONG An-guo; WANG Dan-dan; LIANG Miao-miao; XUE Fang; School of Science, Chang’an University, Xi’an 710064, Shaanxi, China

Keywords:: image signal processing; block motion vector; method of select point form the circle area; point matching; target extraction

Abstract:: In order to extract the complete moving targets from video sequences, this paper proposed a method of using block motion vector and selecting point form the circle area to extract the moving targets. First of all, the two adjacent frames were divided into blocks with the same size by the same way, thus the pixel blocks which only contained background pixels were removed through calculating the motion vector of each block. Then, block the rest blocks again and further, removed the background blocks around the target through the block matching criterion. Finally, using the method of select point form the circle area to do point matching, the background pixels of the target were removed. Through the above steps, a complete moving target was got. The results show that this method has a good detection for processing target under the complex background. It can extract the whole moving target. The targets edges extracted are clear and complete, and the extraction of target does not include holes. So the testing effect is good.