Name
Abstract | ||
|---|---|---|
The conventional variable-size block motion compensation technique, even though superior to the fixed-size block motion-compensation technique, cannot fully utilize the motion information of a frame for its partitioning. This paper presents a quadtree structured region-wise motion-compensation technique that utilizes more effectively the motion content of a frame in terms of the shape, size, and location of the partitioned regions. The proposed technique is based on a new coding scheme of the quadtree structure, where a two-bit code is used. The partitioning of a given frame is carried out through the processes of merging and combining. The merging process partitions the frame into a number of regions by carrying out all possible 4-to-1, 3-to-1, and 2-to-1 merges along the quadtree hierarchy according to some specified criteria, while the combining process combines some of the partitioned regions that have the same motion vector into a single region. The motion vectors of the resulting partitioned regions are coded by a new coding scheme that uses the temporal correlation of the motion fields. Test results of applying the proposed method on a number of MPEG video sequences are included. These results indicate that the proposed method can provide a significantly improved rate-distortion performance |
Year | DOI | Venue |
|---|---|---|
1999 | 10.1109/76.780368 | IEEE Trans. Circuits Syst. Video Techn. |
Keywords | Field | DocType |
mpeg video sequences,motion vector,frame motion content,motion compensation,quadtree structured region-wise motion compensation,quadtrees,motion information,partitioned region,conventional variable-size block motion,test results,fixed-size block motion-compensation technique,image segmentation,video compression,data compression,motion field,computational complexity,temporal correlation,video coding,motion content,image sequences,compensation technique,new coding scheme,region-wise motion compensation,fixed-size block motion-compensation,variable-size block motion compensation,merging process,rate distortion theory,partitioned regions,correlation methods,rate-distortion performance,motion fields,combining process,two-bit code,rate distortion optimization,signal processing,testing,indexing terms,transform coding,merging,shape | Computer vision,Block-matching algorithm,Quarter-pixel motion,Pattern recognition,Computer science,Motion compensation,Artificial intelligence,Motion estimation,Data compression,Motion vector,Quadtree,Variable-length code | Journal |
Volume | Issue | ISSN |
9 | 5 | 1051-8215 |
Citations | PageRank | References |
13 | 2.63 | 7 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jiajun Zhang | 1 | 18 | 3.42 |
| M. O. Ahmad | 2 | 1157 | 154.87 |
| M. N.S. Swamy | 3 | 267 | 18.50 |