Picture Signal Fusion with Display Standard Alignment
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Solution Overview
Problem
Existing methods struggle to effectively fuse signals of varying display standards, such as SDR and HDR, leading to issues like inter-frame flicker and degradation of picture quality due to improper alignment and conversion of meta data.
Innovation Solution
A method involving display standard conversion aligns the secondary picture signal with the higher display standard of the main picture signal, using meta data to ensure consistent color gamut and luminance domain alignment, followed by fusion using a fusion coefficient for weighted averaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If display standard conversion is performed on secondary picture signal to align with main picture signal, then picture quality is improved and inter-frame flicker is reduced, but processing complexity increases
Solution Approach 1:
The patent performs display standard conversion on the secondary picture signal before fusion operations. By converting the secondary signal's display standard to match the main signal's display standard in advance, the system ensures consistent color gamut and luminance domain alignment, which improves picture quality and eliminates inter-frame flicker caused by mismatched standards.
Solution Approach 2:
The patent introduces meta data as an intermediary element to facilitate the alignment process. The meta data contains information about the main picture signal's display standard, which is used as a reference to guide the conversion of the secondary picture signal. This intermediary mechanism enables automated and accurate standard alignment without requiring complex manual configuration.
2Adaptability or versatility
If multiple HDR standards are supported in different fields, then adaptability is improved, but data fusion complexity increases
Solution Approach 1:
The patent handles multiple HDR standards (such as HDR10, HLG, Dolby Vision) by dynamically adjusting processing parameters based on the detected display standard. The system identifies the specific HDR standard of the main picture signal through meta data and modifies the conversion parameters accordingly, enabling seamless adaptation to different standards while maintaining a unified processing framework that avoids exponential complexity growth.
3Reliability
If frame-level meta data alignment is performed, then picture quality assurance is improved, but processing time increases
Solution Approach 1:
The patent extracts and processes frame-level meta data at the beginning of the fusion operation to obtain the display standard information beforehand. By performing this alignment preparation in advance, the system avoids repeated meta data processing during subsequent fusion operations, thereby reducing overall processing time while maintaining picture quality assurance through accurate standard alignment.
Data Source
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AI summary
A method and system for fusing a plurality of signals, a device, a storage medium, and a computer program product are provided. The method includes: obtaining a picture signal of a target frame in a video of a main path as a main picture signal; obtaining a picture signal of a secondary path as a secondary picture signal; performing display standard conversion on the secondary picture signal, and aligning a display standard of the secondary picture signal with a display standard of the main picture signal; and fusing the main picture signal and the secondary picture signal to obtain a target picture signal after performing the display standard conversion on the secondary picture signal. The present invention helps implement signal fusion with picture quality (PQ) assurance.