MVC Signal Decoding for Single-View Quality
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Solution Overview
Problem
Current multiview video coding (MVC) standards are not optimized for single-view displays, leading to inefficiencies in utilizing image information, resulting in suboptimal image resolution and transcoding quality when converting MVC signals to single-view signals.
Innovation Solution
A system and method that decodes MVC signal streams to utilize temporal and spatial image information from multiple views to enhance image resolution and transcoding quality by processing decoded video signals from a base view and dependent views, improving the spatial and temporal image quality of single-view images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MVC standard provides backward compatibility for single view displays by decoding only single view, then compatibility with single view devices is maintained, but image resolution and transcoding quality deteriorate due to discarding multiview data
Solution Approach 1:
The patent changes the processing parameters by utilizing multiple decoded video signals (base view and dependent views) instead of discarding them. It applies inter-view prediction and blending techniques that process temporal and spatial information from multiple views to generate enhanced single-view output, thereby improving image resolution and transcoding quality while maintaining compatibility with single-view displays
Solution Approach 2:
The patent transitions from single-view to multiview processing by incorporating spatial dimension information from multiple viewing angles. It uses dependent views as additional spatial dimensions to predict and enhance the base view, effectively utilizing the extra dimensional data to improve single-view output quality without requiring changes to single-view display devices
2Loss of information
If MVC encoder captures multiple views with multiple image capturing devices, then complementary image information from different angles is obtained, but data redundancy increases and processing complexity worsens
Solution Approach 1:
The patent uses dependent views as copies or references of the base view from different angles. Instead of treating all views equally, it designates one view as base and uses other views as predictive references, reducing the need to fully decode and process all views independently. This copying approach retains complementary information while reducing processing complexity through selective utilization
3Manufacturing precision
If conventional MVC decoder decodes all views to generate multiview 3D video image, then 3D video quality is improved, but processing time and computational resources worsen
Solution Approach 1:
The patent applies partial action by decoding only the base view and selected dependent views for prediction purposes, rather than fully decoding all views for display. It performs inter-view prediction using motion compensation and blending operations on a selective basis, achieving enhanced single-view quality without the full computational burden of complete multiview decoding, thus reducing processing time while maintaining quality
Data Source
AI summary
A method and system for producing a single view video signal based on a multiview video coding (MVC) signal stream. A MVC signal stream representing multiple spatially related views of a scene, including a base view and at least one dependent view, is decoded to provide multiple decoded video signals representing the spatially related views, with respective portions of the MVC signal stream representing one of multiple temporally adjacent video frames, and the MVC signal stream representing multiple sequences of spatially adjacent video frames. The decoded video signals are processed to provide a processed video signal representing one of the spatially related views using image information from more than one of the decoded video signals. As a result, more image data is used during processing, thereby improving the spatial and temporal image quality.