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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hwangjun Song Kuo, C.-C.J. |
| Copyright Year | 1999 |
| Description | Author affiliation: Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA (Hwangjun Song) |
| Abstract | A region-based video codec based on the H.263+ standard is examined and its associated novel rate control schemes are proposed for visual communication through time-varying low-bit-rate channels. The region-based coding scheme is a hybrid method that consists of the traditional block DCT coding and the object-based coding. Basically, we adopt H.263+ as the platform, and develop a fast macroblock-based segmentation method to implement the region-based video codec. The proposed rate control solution includes rate control in three levels: encoding frame selection, frame-layer rate control and macroblock-layer rate control. The goal is to enhance the visual quality of decoded frames without obvious motion unsmoothness under time-varying channels. The efficiency of the proposed rate control schemes applied to the region-based video codec is demonstrated via several typical test sequences. |
| Starting Page | 339 |
| Ending Page | 344 |
| File Size | 269409 |
| Page Count | 6 |
| File Format | |
| ISBN | 0780356101 |
| DOI | 10.1109/MMSP.1999.793859 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-09-13 |
| Publisher Place | Denmark |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Time-varying channels Video codecs Communication system control Video compression Communication standards Code standards Discrete cosine transforms Feedback Bandwidth Visual communication |
| Content Type | Text |
| Resource Type | Article |
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