Motion Encoding Decoder Self-Service Bandwidth Reduction
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Solution Overview
Problem
Existing image encoding and decoding methods consume significant bandwidth due to the transmission of motion information, particularly in limited bandwidth environments like wireless settings.
Innovation Solution
A method where motion estimation, performance criteria evaluation, and reference image portion selection are performed using only information available at the decoder, eliminating the need to transmit reconstruction information for motion components, thereby reducing bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motion information including reconstruction information is transmitted to the decoder, then the decoder can accurately reconstruct motion components, but the bandwidth consumption increases significantly
Solution Approach 1:
The decoder performs motion estimation independently using only information available at the decoder (current image portion and candidate reference image portions). The decoder self-determines motion components without requiring reconstruction information from the encoder, making the system self-sufficient and eliminating the need for bandwidth-consuming motion information transmission.
Solution Approach 2:
The patent extracts and transmits only the essential current image portion data, while removing the unnecessary transmission of motion reconstruction information. By taking out only what is absolutely necessary for encoding and relying on the decoder's independent estimation capability, the patent significantly reduces the quantity of transmitted data.
2Measurement precision
If complete motion reconstruction information is transmitted, then motion estimation accuracy is improved, but the complexity of the encoding system increases
Solution Approach 1:
The decoder is designed to perform motion estimation independently using locally available information. This self-service approach eliminates the need for complex encoding-side motion estimation and information packaging, simplifying the overall system while maintaining accuracy through the decoder's own estimation capabilities.
3Manufacturing precision
If motion information is transmitted for high resolution images, then image quality is maintained, but bandwidth requirements become prohibitive in wireless environments
Solution Approach 1:
The decoder independently estimates motion components for high resolution images using only information available at the decoder. This eliminates the need to transmit motion information that would scale with image resolution, allowing high quality image reconstruction without proportionally increasing bandwidth requirements in wireless environments.
Data Source
AI summary
A method is provided for encoding a portion of a current image, including: an estimation of motion between the current image portion and a plurality of candidate image portions in order to form motion components, an evaluation of a performance criterion for each candidate image portion, and the selection of a reference image portion using said performance criteria. In the method, for at least one motion component, the motion estimation, the performance criteria evaluation and the reference image portion selection only use information considered to be available at the decoder and no motion information is inserted into an output flow intended for a decoder. A corresponding decoding method is also provided.