Video Communication Quality Estimation Using Delay and Multi-Modal Analysis
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Solution Overview
Problem
Existing video communication systems fail to accurately estimate video communication quality due to the lack of consideration for frame rate variations and bidirectional delay times, leading to quality degradation in audio and video media synchronization.
Innovation Solution
A video communication quality estimation apparatus and method that estimates quality by combining audio and video quality evaluation values with delay quality degradation amounts, using multi-modal quality estimation and delay quality degradation units to account for frame rate changes and synchronization delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional quality evaluation techniques are used, then audio and video quality can be estimated separately, but comprehensive video communication quality cannot be accurately estimated due to lack of consideration for frame rate variations and bidirectional delay times
Solution Approach 1:
The quality evaluation system is segmented into distinct functional units: audio quality evaluation unit, video quality evaluation unit, delay quality degradation amount estimation unit, and comprehensive quality estimation unit. Each unit handles specific aspects of quality assessment independently, allowing for precise measurement while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The patent merges separate audio and video quality evaluations with delay quality degradation assessment to produce a comprehensive video communication quality estimate. The audio quality evaluation value, video quality evaluation value, and delay quality degradation amount are combined through a unified estimation model that accounts for frame rate variations and bidirectional delay times, achieving accurate comprehensive quality measurement.
2Measurement precision
If frame rate variations are not considered, then quality evaluation is simpler, but quality estimation accuracy degrades under variable frame rate conditions
Solution Approach 1:
The quality evaluation system is designed to dynamically adapt to varying frame rates. The delay quality degradation amount estimation unit incorporates frame rate information as a variable parameter, allowing the estimation model to adjust its calculations based on actual frame rate conditions. This dynamic adaptation enables accurate quality estimation whether the frame rate is constant or variable, without requiring complex separate evaluation paths.
3Measurement precision
If bidirectional delay times are not considered, then quality evaluation is simpler, but synchronization quality between audio and video media cannot be accurately assessed
Solution Approach 1:
The patent extracts delay quality degradation as a separate measurable parameter from the overall quality evaluation process. The delay quality degradation amount estimation unit specifically isolates and measures the impact of bidirectional delay times on synchronization quality, allowing this factor to be quantified independently and then integrated with audio and video quality evaluations for comprehensive assessment.
Data Source
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AI summary
A multi-modal quality estimation unit (11) estimates a multi-modal quality value (23A) on the basis of an audio quality evaluation value (21A) and a video quality evaluation value (21). In addition, a delay quality degradation amount estimation unit (12) estimates a delay quality degradation amount (23B) on the basis of an audio delay time (22A) and a video delay time (22B). A video communication quality estimation unit (13) estimates a video communication quality value (24) on the basis of a multi-modal quality value (23A) and a delay quality degradation amount (23B).