Identification of moving objects in colour digital video sequences.

摘要

In the past decade, there has been a tremendous increase in the use of digital video through computer systems. However, in many applications, the video size and frame rate suffer from the fact that enormous amounts of bandwidth and storage space are still required by digital video. Nevertheless, home and industry level computers have become powerful enough to decompress and display good quality video through the use of specialized hardware such as video capture boards and video display cards without using up all CPU cycles: we now have the ability to process video in real-time.; Research on video processing is still at an early stage but is now attracting attention. Concepts such as motion detection, object tracking and object recognition can be very useful in many applications and have become more feasible. Another area that could benefit from new video processing algorithms is video indexing in multimedia database systems. Compression of video allows it to be stored in vast quantity, but the problem is the retrieval of video that has been stored. Multiple techniques can be used to accelerate the video search process but most of them do not help in understanding the contents of the video, which often must be done manually.; In this thesis, a moving objects identification algorithm called SmartID has been designed. It brings some level of improvement in many sectors of computerized video, but in particular in the three sectors mentioned above: video compression, video processing applications and video indexing. This research also encompassed the design and implementation of a digital video surveillance application that demonstrates the usefulness of the algorithm.