Image shaping in video coding using rate distortion optimization

The RDO-based signal shaping technique addresses inefficiencies in video encoding by adaptively assigning codewords to bins based on luminance variance, enhancing both visual quality and objective metrics while reducing complexity, suitable for standard and high dynamic range video content.

JP7873763B2Active Publication Date: 2026-06-12DOLBY LABORATORIES LICENSING CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
DOLBY LABORATORIES LICENSING CORP
Filing Date
2025-07-01
Publication Date
2026-06-12

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Abstract

To provide image reshaping in video coding using rate distortion optimization.SOLUTION: Given a sequence of images in a first codeword representation, a method, a process, and a system are presented for image reshaping using rate distortion optimization. Reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using a first codeword representation. A syntax method for signaling reshaping parameters is also presented.SELECTED DRAWING: Figure 2E
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