Shared Image Processing for HDR and SDR Video Conversion
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Solution Overview
Problem
Conventional image-processing devices require separate circuits or procedures for processing high dynamic range (HDR) and standard dynamic range (SDR) videos due to their different characteristics, limiting the applicability of a single system to both formats.
Innovation Solution
An audiovisual system with a shared image-processing procedure that converts videos between HDR and SDR formats using frame-by-frame color space conversions, electro-optical and optical-electro transfers, and gamma corrections to adapt image-processing parameters for various formats, allowing a single system to handle both types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate image-processing procedures are provided for HDR and SDR videos, then processing quality for each format is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal image-processing procedure that can handle both HDR and SDR video formats through a single processing path. The system uses format detection to identify input video type and automatically adjusts processing parameters accordingly, eliminating the need for separate dedicated processing circuits for each format while maintaining high processing quality for both HDR and SDR videos.
2Reliability
If separate image-processing procedures are provided for HDR and SDR videos, then processing quality for each format is improved, but the system requires additional circuits
Solution Approach 1:
The patent employs a single shared image-processing circuit that can process both HDR and SDR video formats. The system detects the input format and dynamically adjusts processing parameters within the same circuit, avoiding the need for additional dedicated circuits for each format while ensuring high processing quality for both video types.
Solution Approach 2:
The patent changes processing parameters based on the detected video format (HDR or SDR) within a single processing circuit. By dynamically adjusting parameters such as brightness, contrast, and color saturation according to the input format, the system maintains high processing quality for both formats without requiring separate hardware circuits.
3Measurement precision
If different parameters are used for processing HDR and SDR videos, then processing accuracy for each format is improved, but the system cannot share procedures
Solution Approach 1:
The patent uses different processing parameters for HDR and SDR videos within a single shared procedure. The system detects the video format and automatically selects appropriate parameters (such as different brightness ranges, contrast levels, and color saturation values) to maintain high processing accuracy for each format while enabling procedure sharing through parameter dynamic adjustment.
Solution Approach 2:
The patent implements dynamic parameter adjustment within a shared image-processing procedure. The system continuously adapts processing parameters based on the detected video format, allowing the same procedure to maintain high accuracy for both HDR and SDR videos by dynamically changing its operational characteristics rather than requiring static separate procedures.
Data Source
AI summary
An audiovisual system with a shared image-processing procedure and a method for processing video therein are provided. The audiovisual system performs the image-processing procedure on a specific format video for optimizing images of the video. If a video format is not supported by the image-processing procedure in the audiovisual system, the video is converted to a video format supported by the audiovisual system. Various videos of different formats can accordingly share the same image-processing procedure. In the method, a first format conversion procedure is performed for converting a received second format video to a first format video that is supported by the image-processing procedure performed in the audiovisual system. The first format video can then be processed by the audiovisual system. It is determined if one more format conversion is required according to the format supported by a display at an output end of the audiovisual system.