Host: The Institute of Image Electronics Engineers of Japan
Recently, monitoring systems using surveillance camera and/or web camera are frequently used in many applications. Captured videos are often compressed and stored with MPEG format, which is the international coding standard for moving pictures. Among several MPEG series, MPEG-4 is expected to be more utilized by implementing it on portable devices such as mobile phone. From this point of view, in this work, we try to detect moving objects directly on the compressed video sequence by MPEG-4. The object detection is conducted by MB (macro block) by MB by considering kind and amplitude of motion vectors, and relationship with neighbor MBs. With the method developed in this work, we could detect about 80% of the region of moving objects that we want to extract while somehow containing unnecessary regions.
