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US Patent 10469847 Inter-component de-correlation for video coding

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Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
10469847
Patent Inventor Names
Yan Ye74
Yuwen He74
Xiaoyu Xiu74
Date of Patent
November 5, 2019
Patent Application Number
14852260
Date Filed
September 11, 2015
Patent Citations Received
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US Patent 11490124 Signaling of chroma and luma syntax elements in video coding
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US Patent 12120314 Motion candidate list construction using neighboring block information
3
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US Patent 11463714 Selective use of cross component mode in video coding
4
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US Patent 11463687 Motion candidate list with geometric partition mode coding
5
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US Patent 11477466 Restriction on applicability of cross component mode
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US Patent 12069262 Geometric partitioning mode in video coding
8
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US Patent 12075047 Methods and apparatus of video coding in 4:4:4 color format
9
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US Patent 12081767 Interaction between MV precisions and MV difference coding
10
...
Patent Primary Examiner
‌
Michael J Hess
Patent abstract

Cross-component prediction (CCP) and adaptive color transform (ACT) may be performed concurrently in a video coding system. CCP and ACT may be enabled/disabled at the same level (e.g. at the transform unit level) via an indicator signaled in the bitstream such as the ACT enable indicator for the CU. Inverse CCP and ACT may be operated at the same level (e.g. at the transform unit level). Prediction residuals may be converted to original color space without waiting for reconstruction of luma and chroma residuals of an entire prediction unit or coding unit. CCP and ACT transforms may be combined into one process to reduce encoding/decoding latency. Differences in dynamic ranges of color components may be compensated by variable dynamic range adjustments. Differences in bit depths between luma and chroma components may be compensated by selectively disabling the ACT coding tool, scaling a component output of the CCP, adjusting a quantization parameters (QPs) and/or shifting a component output of an inverse transform of the video coding system.

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