A Model Based Motion Estimation Algorithm For Very-Low-Rate Video Coding

• Main Authors: Huang, Chen-Duei, 黃成對
• Other Authors: Chang, Long-Wen
• Format: Others
• Language: en_US
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/57145280763417878613

碩士 === 國立清華大學 === 資訊科學學系 === 84 === 　　A new algorithm for very low bit-rate image sequences coding with low bit-rate and high picture quality is proposed. The proposed algorithm uses a variable size block method to estimate motion vectors accurately and reduce the number of motion vectors. Unlike conventional algorithms, the proposed one applies a multi-vectors algorithm to estimate a block motion by more than one motion vector and uses a model based method to trace the object's contours to reduce visual artifacts. By testing several image sequences, such as ”Miss American” and ”Claire”, the proposed algorithm shows very good results.