Image Processing Coefficient Scanning for Efficient Transform Coding
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Solution Overview
Problem
Existing image processing methods risk reducing encoding efficiency by encoding coefficient data in invalid transform coefficient regions, leading to unnecessary information transmission and increased processing load.
Innovation Solution
The method involves skipping encoding and decoding of coefficient data in invalid transform coefficient regions and processing only in valid transform coefficient regions, with optional scan direction adjustments based on block shape and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If encoding is performed in existing scan order including invalid transform coefficient regions, then complete coefficient data is encoded, but encoding efficiency is reduced by unnecessary information
Solution Approach 1:
The patent extracts and removes the encoding process for invalid transform coefficient regions from the overall encoding flow. By identifying which coefficient regions are valid versus invalid, the system selectively encodes only the valid regions, eliminating unnecessary encoding operations on invalid data that would waste bandwidth and processing resources.
Solution Approach 2:
The patent applies different encoding treatments to different regions of the transform coefficient block. Valid transform coefficient regions are encoded with full detail while invalid regions are skipped entirely. This local differentiation allows the system to optimize encoding efficiency by applying appropriate processing only where needed.
2Ease of operation
If coefficient data in invalid transform coefficient regions is encoded, then all coefficient data is processed, but processing load increases
Solution Approach 1:
The patent extracts the identification and exclusion of invalid transform coefficient regions from the encoding process. By separating valid and invalid regions and removing invalid regions from the encoding pipeline, the system reduces processing load without complicating the overall operation, as the validity determination follows standard transform coefficient analysis.
Solution Approach 2:
The patent performs preliminary identification of valid versus invalid transform coefficient regions before the main encoding process. This advance classification allows the encoding system to prepare an optimized encoding plan that avoids unnecessary processing of invalid regions, reducing overall processing load while maintaining operational simplicity.
Data Source
AI summary
An image processing apparatus (encoder, decoder or the like) and method suppress reduction in encoding efficiency. Encoding of coefficient data is skipped in an invalid transform coefficient region, and the coefficient data is encoded in a valid transform coefficient region. Further, for example, the coefficient data in the valid transform coefficient region is encoded in a scan order corresponding to a block shape of a block to be processed. In addition, decoding of encoded data including encoded coefficient data related to an image is skipped in an invalid transform coefficient region, and the encoded data is decoded in a valid transform coefficient region. Further, for example, the encoded data in the valid transform coefficient region is decoded in a scan order corresponding to the block shape of the block to be processed.