Double-Layer Bitstream Processing for Consistent HDR-SDR Images
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Solution Overview
Problem
Current image processing technologies are limited to single-layer bitstreams, such as high dynamic range (HDR) or standard dynamic range (SDR), failing to effectively handle double-layer bitstreams.
Innovation Solution
An image processing method and apparatus that processes a double-layer bitstream, comprising first and second encoded data representing base and enhancement images, to output a double-layer bitstream suitable for different scenarios, ensuring image consistency and meeting various requirements through operations like upscaling, downscaling, sharpening, blurring, watermarking, or watermark removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current image processing technology is used for single-layer bitstreams, then processing simplicity is maintained, but the ability to handle double-layer bitstreams is lost
Solution Approach 1:
The patent segments the double-layer bitstream processing into distinct modules: a decoding module that separately decodes base layer and enhancement layer bitstreams, a composition module that combines them, and an image processing module that applies operations to the composite image. This segmentation allows the system to handle double-layer bitstreams while maintaining organized, manageable complexity through functional separation.
2Adaptability or versatility
If image processing operations are applied to double-layer bitstream, then scenario-specific requirements are met, but processing time increases
Solution Approach 1:
The patent performs preliminary actions by first decoding the base layer and enhancement layer bitstreams separately, then composing them into a composite image before applying image processing operations. This preliminary composition step organizes the data structure in advance, allowing subsequent image processing operations (upscaling, downscaling, sharpening, etc.) to be applied more efficiently to a unified image rather than processing layers independently through multiple transformation steps.
3Manufacturing precision
If double-layer bitstream processing is implemented, then image quality and consistency are improved, but system complexity increases
Solution Approach 1:
The patent introduces a composition module as an intermediary between the decoding module and the image processing module. This composition module receives separately decoded base layer and enhancement layer images, combines them into a composite image, and passes it to the image processing module. This intermediary step ensures that image processing operations are applied to a properly integrated composite image, maintaining image consistency and quality while managing system complexity through clear modular interfaces.
Data Source
AI summary
An image processing method and apparatus, wherein the method includes: performing image processing on a first double-layer bitstream, and outputting a second double-layer bitstream. The first double-layer bitstream includes first encoded data representing a first base image and second encoded data representing a first enhancement image. The second double-layer bitstream includes third encoded data representing a second base image and fourth encoded data representing a second enhancement image. The first base image and the first enhancement image are used to obtain a first composite image, the second base image and the second enhancement image are used to obtain a second composite image, and a difference between the first composite image and the second composite image relates to an image processing operation.