Patent
Conversion operations in scalable video encoding and decoding
Shijun Sun,Shankar Regunathan,Chengjie Tu,Chih-Lung Lin +3 more
- 14 Aug 2009
100
TL;DR: In this paper, techniques and tools for conversion operations between modules in a scalable video encoding tool or scalable video decoding tool are described, where adaptive filtering and chroma scaling help reduce energy in inter-layer residual video by making the reconstructed base layer video closer to input video.
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Abstract: Techniques and tools for conversion operations between modules in a scalable video encoding tool or scalable video decoding tool are described. For example, given reconstructed base layer video in a low resolution format (e.g., 4:2:0 video with 8 bits per sample) an encoding tool and decoding tool adaptively filter the reconstructed base layer video and upsample its sample values to a higher sample depth (e.g., 10 bits per sample). The tools also adaptively scale chroma samples to a higher chroma sampling rate (e.g., 4:2:2). The adaptive filtering and chroma scaling help reduce energy in inter-layer residual video by making the reconstructed base layer video closer to input video, which typically makes compression of the inter-layer residual video more efficient. The encoding tool also remaps sample values of the inter-layer residual video to adjust dynamic range before encoding, and the decoding tool performs inverse remapping after decoding.
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Citations
Patent
Extending image dynamic range
Walter Gish,Zhen Li,Pian Donald T,Christopher J. Vogt,Hyung-Suk Kim,David Ruhoff +5 more
- 23 Aug 2011
TL;DR: In this paper, an input video signal that is represented in a first color space with a first colour gamut, which is related to a first dynamic range, is converted to a video signal representing in a second color space and associated with a second dynamic range; at least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic ranges.
124
Patent
High dynamic range image generation and rendering
Shijun Sun
- 16 Jan 2011
TL;DR: In this article, an HDR image generating system performs motion analysis on a set of lower dynamic range (LDR) images and derives relative exposure levels for the images based on information obtained in the motion analysis.
123
Patent
Method and apparatus of scalable video coding
Chuang Tzu-Der,Chen Ching-Yeh,Huang Yu Wen,Shaw-Min Lei,Chih-Ming Fu,Chia-Yang Tsai +5 more
- 31 May 2012
TL;DR: In this paper, a method and apparatus for scalable video coding are disclosed, wherein the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein the EL has higher spatial resolution or better video quality than the BL.
119
Patent
Inter-layer prediction method and apparatus using same
Chulkeun Kim,Seungwook Park,Jaehyun Lim,Yongjoon Jeon,Joonyoung Park,Naeri Park,Byeongmoon Jeon +6 more
- 28 Feb 2013
TL;DR: In this paper, an inter-layer prediction method was proposed, which consists of a step of inducing interlayer motion information from a reference layer, and a step that performs a prediction on the current block in the current layer using the inter-layered motion information.
56
Patent
Picture coding device, picture coding method, picture coding program, picture decoding device, picture decoding method, and picture decoding program
Kumakura Toru,Fukushima Shigeru +1 more
- 17 Feb 2017
TL;DR: In this article, a first mode detection unit constructs a first candidate list from a plurality of reference block candidates based on a first predetermined order, assigns indices for designating reference blocks added in the first candidate lists, and outputs the indices of the plurality of candidate blocks and motion vector differences.
56
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