3D Video Coding Using SVC Spatial Scalability
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Solution Overview
Problem
Conventional video coding methods lack efficient scalability for 3D video transmission, particularly in achieving high-resolution 3D video compatibility with legacy systems while maintaining bandwidth efficiency and quality.
Innovation Solution
The method employs SVC spatial scalability by encoding 3D video into a base layer and an enhancement layer, where the base layer contains half-resolution views in an interlaced format and the enhancement layer contains high-resolution views in a progressive format, allowing for inter-layer prediction and backward compatibility with existing AVC systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 3D video is encoded using conventional video coding methods, then transmission bandwidth is consumed, but scalability for different resolutions and legacy system compatibility is not achieved
Solution Approach 1:
The 3D video encoding is segmented into multiple layers: a base layer containing lower-resolution video compatible with legacy systems, and enhancement layers containing higher-resolution video for advanced systems. This segmentation allows selective transmission and decoding based on system capabilities, achieving scalability without proportionally increasing bandwidth consumption.
Solution Approach 2:
The patent introduces a new dimension of scalability by organizing video data in a hierarchical structure with base layer and enhancement layers. This dimensional organization allows the same bitstream to serve multiple resolution requirements simultaneously, enabling legacy systems to decode only the base layer while advanced systems can access enhancement layers for higher quality.
2Manufacturing precision
If high-resolution 3D video is transmitted, then video quality is improved, but bandwidth consumption increases
Solution Approach 1:
The encoding structure allows receivers to decode only the necessary portion of the bitstream based on their capabilities. Legacy systems decode only the base layer with sufficient quality for their resolution requirements, while advanced systems can access enhancement layers. This partial action approach ensures that bandwidth is effectively utilized without transmitting excessive data for each receiver type.
3Adaptability or versatility
If 3D video is encoded for legacy system compatibility, then backward compatibility is achieved, but high-resolution 3D video quality is compromised
Solution Approach 1:
The base layer is nested within the enhancement layers, forming a hierarchical structure where the legacy-compatible base layer is contained within the more advanced enhancement layers. This nested structure allows legacy systems to independently decode the base layer for full compatibility, while advanced systems can access the outer enhancement layers to achieve higher resolution and quality without compromising the inner base layer functionality.
Data Source
AI summary
Disclosed are various embodiments of three-dimensional (3D) video coding using scalable video coding (SVC) spatial scalability. In one embodiment, 3D video is encoded to generate a SVC base layer that includes a left first-resolution view and a right first-resolution view packed in a first frame. 3D video is encoded to generate a SVC enhancement layer that includes a left second-resolution view and a right second-resolution view packed in a second frame. The left second-resolution view and the right second-resolution view may have a higher spatial resolution than the left first-resolution view and the right first-resolution view.