Scene-Change Detection for MPEG-2 Video Encoder

• Main Authors: Hsing-Chien Yang, 楊行健
• Other Authors: S.C.Tai
• Format: Others
• Language: en_US
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/p6csf9

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 90 === Scene-Change Detection for MPEG-2 Video Encoder Hsing-Chien Yang *, Shen-Chuan Tai** Department of Electrical Engineering National Cheng Kung University, Tainan, Taiwan, R.O.C Abstract In recent years, video compression technique plays an important role in many applications such as data transmission and storage. MPEG-2 standard is instituted for better visual quality and more flexible applications. Although the MPEG-2 video standard can provide high quality, the performance will decrease if a scene-change occurs. To solve this problem, we propose a novel scene-change detection scheme for video encoder to prevent visual quality decrease in uncompressed domain. We present a motion-compensation based algorithm to measure the similarity of two adjacent frames. To further reduce the computational load, we use the lowest band of wavelet transform to estimate the occurrence of scene-change. Our algorithm can present false detection when two different images have the same feature. Experimental results show that the performance of the proposed algorithm is indeed superb in term of visual quality and false alarm. Also, we found that the proposed algorithm has the better visual quality than MPEG-2 standard about 0.33 dB at the same bitrate. As a result, this contribution could be applied in the video applications such as database indexing or data compression. *Author **Advisor