scholarly journals Decoder-driven mode decision in a block-based distributed video codec

2011 ◽  
Vol 58 (1) ◽  
pp. 239-266 ◽  
Author(s):  
Stefaan Mys ◽  
Jürgen Slowack ◽  
Jozef Škorupa ◽  
Nikos Deligiannis ◽  
Peter Lambert ◽  
...  
Keyword(s):  
Video Codec ◽  
Mode Decision ◽  
Block Based

Video codec incorporating block-based multihypothesis motion-compensated prediction

2000 ◽  
Author(s):  
Markus Flierl ◽  
Thomas Wiegand ◽  
Bernd Girod
Keyword(s):  
Video Codec ◽  
Block Based

Scanned Document Compression Using Block-Based Hybrid Video Codec

2013 ◽  
Vol 22 (6) ◽  
pp. 2420-2428 ◽  
Author(s):  
A. Zaghetto ◽  
R. L. de Queiroz
Keyword(s):  
Video Codec ◽  
Block Based ◽  
Document Compression

The block-based hybrid video codec

2021 ◽  
pp. 309-333
Author(s):  
David R. Bull ◽  
Fan Zhang
Keyword(s):  
Video Codec ◽  
Block Based

Dirac Video Codec

2011 ◽  
pp. 58-94
Author(s):  
Kok Keong ◽  
Myo Tun ◽  
Yoong Choon Chang
Keyword(s):  
Video Coding ◽  
Data Storage ◽  
Video Compression ◽  
Rate Distortion ◽  
Video Codec ◽  
Discrete Wavelet ◽  
Coding System ◽  
Web Content ◽  
Video Codecs ◽  
Block Based

Dirac was started off by British Broadcasting Corp. (BBC) in 2003 as an experimental video coding system based on wavelet technology, which is different from that used in the main proprietary/standard video compression systems. Over the years, Dirac has grown out of its initial development and it is now on offer as an advanced royalty-free video coding system designed for a wide range of users, from delivering low-resolution web content to broadcasting high-definition (HD) and beyond, to near-lossless studio editing. The Dirac’s video coding architecture and algorithms are designed with the “keep it simple” mindset. In spite of that the Dirac seems to give a two-fold reduction in bitrate over MPEG-2 for HD video and broadly competitive with state-of-the-art video codecs. This chapter introduces the architecture of Dirac video encoder. The overall encoding structure is discussed followed by the detail description of motion estimation, Overlapped Block-based Motion Compensation (OBMC), Discrete Wavelet Transform (DWT), Rate Distortion Optimization (RDO) quantization and entropy coding. The Dirac’s bitstream syntax for compressed video data storage and streaming is described. Besides that, the coding performance of Dirac in terms of compression ratio, PSNR, SSIM and VQM in comparison with H.264 as a reference are discussed. Related issues such as transcoding and streaming over packat erasure channel are also discussed.

The Block-Based Hybrid Video Codec

2014 ◽  
pp. 291-316
Author(s):  
David R. Bull
Keyword(s):  
Video Codec ◽  
Block Based
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