3D Video Enhancement Layer Pre-Processing for Compression Efficiency
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Solution Overview
Problem
Conventional 3D video processing methods face limitations in achieving efficient compression while maintaining picture quality, particularly in encoding and transmitting 3D video frames, as they often result in high bit rates or reduced picture sharpness.
Innovation Solution
A system and method for 3D video pre-processing and post-processing that involves determining a modification process, including the use of filters, for the enhancement layer of a 3D video frame based on video and coding information, to enhance compression efficiency by modifying the enhancement layer before encoding, and transmitting modification information to the receiver for recovery of the original image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional 3D video encoding methods are used, then video content can be transmitted, but the bit rate becomes high and picture quality deteriorates
Solution Approach 1:
The patent applies preliminary action by performing modification processes on the enhancement layer before encoding. Specifically, filtering operations are applied to the enhancement layer video data prior to compression, which prepares the data in advance to achieve better compression efficiency and maintain picture quality at lower bit rates
Solution Approach 2:
The patent implements local quality by applying different filtering operations to different regions or layers of the 3D video. The enhancement layer undergoes specific modification processes tailored to its characteristics, allowing optimized compression for different parts of the video content while maintaining overall picture sharpness
2Quantity of substance
If compression is increased to reduce bit rate, then transmission efficiency improves, but picture sharpness is reduced
Solution Approach 1:
The modification process is performed in advance before encoding, preparing the enhancement layer data with filtering operations that will facilitate better compression. This preliminary preparation allows the subsequent encoding to achieve lower bit rates without sacrificing picture sharpness, as the data is pre-optimized for compression
Solution Approach 2:
The patent changes parameters of the enhancement layer through filtering operations. By modifying the enhancement layer video data with specific filters determined based on video and coding information, the patent alters the data characteristics to achieve improved compression ratios while maintaining visual quality at the decoded output
3Productivity
If filters are applied to enhance compression, then encoding efficiency improves, but system complexity increases
Solution Approach 1:
The patent applies filtering operations locally to the enhancement layer rather than uniformly to the entire video stream. By determining filters based on specific video and coding information of the enhancement layer, the system optimizes compression efficiency for relevant regions while avoiding unnecessary processing elsewhere, thus managing complexity
Solution Approach 2:
The patent introduces an intermediary modification process between the enhancement layer input and the encoder. This intermediary filtering stage acts as a mediator that prepares the data for more efficient encoding, improving compression efficiency while keeping the added complexity manageable through targeted rather than universal application
Data Source
AI summary
A 3-dimensional (3D) video transmitter may be operable to determine a modification process to be utilized for modifying an enhancement layer of a 3D video frame before encoding of the enhancement layer. The modification process may provide increased compression efficiency during the encoding. The enhancement layer may be modified utilizing the determined modification process. The modified enhancement layer may then be encoded by the 3D video transmitter. The 3D video transmitter may transmit the encoded base layer and the encoded enhancement layer as well as modification information associated with the modified enhancement layer to a 3D video receiver. The 3D video receiver may decode the transmitted encoded base layer and the transmitted encoded enhancement layer. The 3D video receiver may then modify the decoded enhancement layer, based on the transmitted modification information, so as to recover an original image of the enhancement layer of the 3D video frame.