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Semi-fixed-length motion vector coding for h.263-based low bit rate video compression.
| Content Provider | CiteSeerX |
|---|---|
| Author | Côté, Guy Gallant, Michael Kossentini, Faouzi |
| Abstract | We present a semi-#xed-length motion vector coding method for H.263-based low bit rate video compression. The method exploits structural constraints within the motion #eld. The motion vectors are encoded using semi-#xed-length codes, yielding essentially the same levels of rate-distortion performance and subjective qualityachieved by H.263's Hu#man-based variable length codes in a noiseless environment. However, such codes provide substantially higher error resilience in a noisy environment. 1 Introduction Low bit rate video compression is becoming increasingly important due to present and forthcoming video applications, such as video telephonyover analog telephone lines or over wireless channels. This ever-expanding area has generated an extensive amount of researchwork #1, 2, 3, 4, 5# and increased standardization activities, especially those of the H.263 #6# and MPEG-4 groups #7#. The H.263 video standard #8# was developed mainly for videophone and video conferencing applica... |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Semi-fixed-length Motion Vector Coding Ever-expanding Area Structural Constraint Semi Xed-length Motion Vector Extensive Amount Noiseless Environment Standardization Activity Mpeg-4 Group Rate-distortion Performance Noisy Environment Error Resilience Motion Eld Motion Vector Wireless Channel Forthcoming Video Application Hu Man-based Variable Length Code Video Standard Analog Telephone Line Semi Xed-length Code Video Conferencing Applica |
| Content Type | Text |
