Video Source Resolution Detection for Dynamic Picture Quality

Solution Overview

Problem

Post-processing picture quality enhancement algorithms in video systems lack the ability to effectively adapt to varying source resolutions of video content, leading to suboptimal performance due to the absence of source scale factor information, and are often affected by video coding artifacts and superimposed content.

Innovation Solution

A system and method for active video content source resolution detection, which measures image-by-image source scale factors and provides this information to picture quality processing modules, allowing dynamic adaptation of processing parameters to enhance picture quality while minimizing the impact of video coding artifacts and superimposed content.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed parameter configurations are used for picture quality enhancement algorithms, then device complexity is reduced, but adaptability to varying source resolutions deteriorates

Engineering Contradiction:

Improveadaptability to varying source resolutionsVSAvoidcomplexity of processing system

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic adaptation of picture quality enhancement algorithms by detecting the source resolution of video content and adjusting processing parameters accordingly. The system transitions from fixed parameter configurations to dynamic parameter selection based on detected source scale factors, allowing optimal processing for different resolution levels including native and scaled-up images.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes processing parameters based on detected source resolution characteristics. By determining source scale factors and using this information to select appropriate filter parameter configurations, the system adapts enhancement algorithms to match the specific characteristics of each video source, improving performance across different resolution levels.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If source resolution detection is performed to enable adaptive processing, then adaptability to varying source resolutions is improved, but measurement precision requirements and detection complexity increase

Engineering Contradiction:

Improveadaptability to varying source resolutionsVSAvoiddifficulty of source resolution detection

Core Design Contradiction:

Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent replaces complex mechanical resolution detection methods with signal processing techniques. By analyzing video signal characteristics such as gradient magnitudes and frequency content, the system determines source resolution through computational methods rather than physical measurement, simplifying the detection process while maintaining accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs self-characterization by automatically detecting its own processing requirements based on the input video content. The source resolution detection mechanism enables the processing system to self-adjust without external intervention, automatically selecting appropriate parameters based on detected source characteristics.

Inventive Principle:

Principle #25Self-service

3Reliability

If picture quality enhancement algorithms process all video content uniformly, then device complexity is minimized, but picture quality enhancement performance deteriorates due to inability to adapt to different source resolutions

Engineering Contradiction:

Improvepicture quality enhancement performanceVSAvoidcomplexity of processing system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic adaptation of picture quality enhancement algorithms by detecting the source resolution of video content and adjusting processing parameters accordingly. The system transitions from fixed parameter configurations to dynamic parameter selection based on detected source scale factors, allowing optimal processing for different resolution levels including native and scaled-up images.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes processing parameters based on detected source resolution characteristics. By determining source scale factors and using this information to select appropriate filter parameter configurations, the system adapts enhancement algorithms to match the specific characteristics of each video source, improving performance across different resolution levels.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS8675133B2Video source resolution detection

Publication Date: 2014.03.18 AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE LTD

AI summary

Embodiments for video content source resolution detection are provided. Embodiments enable systems and methods that measure video content source resolution and that provide image-by-image source scale factor measurements to picture quality (PQ) processing modules. With the source scale factor information, PQ processing modules can be adapted dynamically (on a picture-by-picture basis) according to the source scale factor information for better picture quality enhancement. In addition, embodiments provide source resolution detection that is minimally affected by video coding artifacts and superimposed content (e.g., graphics).