Multi-view Image Coding Using Predictive Motion Vector Index
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Solution Overview
Problem
Current single-view video coding methods, such as MPEG-2, H.264/AVC, and HEVC, are inefficient for encoding multi-view images due to high data volume, posing challenges for network infrastructure and terrestrial bandwidth limitations.
Innovation Solution
A multi-view image coding method that identifies and transmits a predictive motion vector index through a bitstream, allowing a multi-view image decoding apparatus to determine a final motion vector, optimizing encoding efficiency by reducing redundancy between images using block-based intra, inter, or inter-view prediction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If single-view video coding methods are used to encode multi-view images, then encoding simplicity is maintained, but encoding efficiency deteriorates due to high data volume
Solution Approach 1:
The patent combines single-view coding techniques with multi-view specific optimizations by integrating motion vector candidate identification from multiple views, merging the advantages of simple single-view encoding with the efficiency needs of multi-view data through unified encoding framework
Solution Approach 2:
The encoding process is segmented into distinct stages: motion vector candidate identification, predictive motion vector determination, and index transmission. This segmentation allows each component to be optimized independently while maintaining overall encoding simplicity
2Measurement precision
If all motion vector information is transmitted through bitstream, then decoding accuracy is improved, but data transmission volume increases
Solution Approach 1:
The patent extracts only the essential motion vector index information from the complete motion vector data, transmitting only what is necessary for accurate decoding while leaving the full motion vector reconstruction to be performed at the decoder side using the extracted index and reference data
Solution Approach 2:
Instead of transmitting complete motion vector data, the patent transmits compact index values that copy or reference pre-defined motion vector candidates, significantly reducing data transmission volume while maintaining decoding accuracy through reference to the original candidate lists at the decoder
Data Source
AI summary
A system for coding/decoding a multi-view image. The system according to an example embodiment may comprise an apparatus for coding the multi-view image and an apparatus for decoding the multi-view image. The apparatus for coding the multi-view image may determine a predictive motion vector most appropriate for a current block from a plurality of candidate motion vectors, and transmit an index of the predictive motion vector that is determined to the apparatus for decoding the multi-view image.