A New Motion-Tolerant Dissolve Detection Algorithm

• Main Authors: Hsin-Hung Lin, 林信宏
• Other Authors: Jin-Jang Leou
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/98021479319336147321

碩士 === 國立中正大學 === 資訊工程所 === 94 === In this study, a new motion-tolerant dissolve detection algorithm is proposed. The objective of the proposed scheme is to detect the dissolve video transitions more efficiently and more precisely. General video sequences are usually composed of many shots. A video transition usually contains no meaningful information about the video sequence, so the first step of video indexing/retrieval is to segment a video sequence into shots. Among various types of gradual transitions, the dissolve-type transition is considered the most common one and it is difficult to detect. The behavior of a dissolve transition is very easily confused with camera or object motions. In this study, we propose a new motion-tolerant dissolve detection algorithm that can correctly distinguish dissolve transitions from local/global motions. We use a natural dissolve transition model to detect the dissolve transition. We calculate the lengths of successive monotonously increasing/decreasing pixels in each frame respectively as the weights, and then we multiply them by cumulated differences and get a WSAD value. If the value exceeds the threshold, we will check whether the slope after the peak is steep enough. If it is, we declare there is a dissolve transition. According to the simulation results, the proposed algorithm is really feasible and powerful.