Video Decoding Apparatus Supplemental Enhancement Information Processing
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Solution Overview
Problem
The existing SEI processing order SEI message lacks consistency due to differences in input and output image sizes, leading to inconsistencies in processing.
Innovation Solution
A video decoding apparatus and a video coding apparatus are configured to include an image decoding apparatus, a supplemental enhancement processing apparatus, and a supplemental enhancement information decoding apparatus. These apparatuses handle multiple pieces of supplemental enhancement information, including a piece indicating priority processing order, which adjusts parameters of the decoded image for consistent processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SEI messages with different input and output image sizes are processed, then supplemental enhancement processing can be performed, but consistency in processing cannot be achieved
Solution Approach 1:
The patent applies parameter changes by introducing a new parameter (picture size information) that dynamically adjusts the processing parameters based on the specific SEI message type. The decoding apparatus changes the picture size parameter according to the input image size indicated in each SEI message, allowing consistent processing across different message types while maintaining adaptability to various image sizes
Solution Approach 2:
The patent implements dynamics by making the processing configuration dynamic rather than static. The picture size is not fixed but is determined dynamically based on the SEI message being processed. The decoding apparatus adjusts the picture size parameter in real-time according to the specific enhancement message requirements, enabling both versatility and consistency
2Adaptability or versatility
If SEI messages are processed without unified picture size parameters, then various enhancement types can be supported, but processing reliability deteriorates
Solution Approach 1:
The patent resolves this contradiction by introducing a dynamic picture size parameter that changes based on the SEI message type. The decoding apparatus receives picture size information from the SEI message and adjusts the processing parameters accordingly, ensuring reliable processing while maintaining compatibility with various enhancement message types
Solution Approach 2:
The patent applies feedback by using the picture size information from the SEI message to adjust the processing parameters. The decoding apparatus receives feedback about the required picture size from each SEI message and uses this information to configure the processing appropriately, ensuring both reliability and versatility
Data Source
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AI summary
Object In an SEI processing order SEI message, input and output image sizes are different depending on an SEI message, and thus there is a problem in that consistency in processing cannot be achieved. Solution A video decoding apparatus according to an aspect of the present invention includes an image decoding apparatus configured to decode coded data and generate a decoded image, a supplemental enhancement processing apparatus configured to perform supplemental enhancement processing on the decoded image, and a supplemental enhancement information decoding apparatus configured to decode multiple pieces of supplemental enhancement information for causing the supplemental enhancement processing apparatus to operate. The supplemental enhancement information includes supplemental enhancement information indicating priority processing order of the multiple pieces of supplemental enhancement information. The supplemental enhancement information includes information indicating change of a parameter of the decoded image to be input to the supplemental enhancement processing apparatus in accordance with the priority processing order.