Inter-Pixel Filter Switching in Picture Coding for Low Processing Load
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Solution Overview
Problem
Conventional picture coding and decoding systems face challenges in efficiently managing processing power and inter pixel filtering, particularly in mobile devices where low processing capability limits the ability to handle high-quality moving picture transmission and compression efficiently.
Innovation Solution
A picture coding and decoding apparatus that selectively uses multiple inter pixel filters based on processing capability and picture properties, allowing for flexible switching between filters to optimize coding and decoding processes, thereby improving picture quality and reducing processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If inter pixel filtering is applied to improve picture quality, then picture quality is improved, but processing load increases
Solution Approach 1:
The patent implements dynamic switching between multiple inter pixel filters based on processing capability and picture properties. The system selects from a plurality of inter pixel filters with different processing loads and filtering strengths, allowing the filtering operation to adapt its intensity to available resources while maintaining picture quality where possible.
Solution Approach 2:
The patent changes the parameters of the filtering operation by selecting different filters from a plurality of available filters. Each filter has different characteristics in terms of processing load and filtering effect, allowing the system to adjust the filtering parameter set based on current processing capability and picture requirements.
2Adaptability or versatility
If multiple inter pixel filters are provided to handle different processing capabilities, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal filtering system that can handle multiple processing capability scenarios using a single apparatus. By providing a plurality of inter pixel filters within one device and implementing a selection mechanism, the system achieves multi-functionality, allowing it to adapt to different processing capabilities (from low-power mobile devices to high-performance systems) without requiring separate filtering solutions for each case.
3Manufacturing precision
If inter pixel filtering is applied to reduce coding noise, then picture quality is improved, but energy consumption increases
Solution Approach 1:
The patent applies partial filtering action by selecting from multiple inter pixel filters with different filtering strengths. Instead of always applying maximum filtering to ensure picture quality, the system can choose milder filtering options when energy conservation is prioritized, applying only the necessary degree of filtering to achieve acceptable picture quality while reducing energy consumption.
Data Source
AI summary
A picture coding apparatus (300) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a predictive picture for the input picture and generates coded picture data, and includes a picture decoding unit (104) for decoding coded picture data (Img) after the picture data (Img) is coded; inter pixel filters A and B (303 and 304) for performing inter pixel filter operation for decoded picture data (Recon) obtained by the picture decoding unit (104); switches (301 and 302) for selecting one of the inter pixel filters; and an inter picture predicting unit (108) for generating the predictive picture data (Pred) for the input picture data (Img) using filtered decoded picture data (FilteredImg1), as reference picture data (Ref), obtained by the selected inter pixel filter.