Artifact Removal for Upsampled Media Signals
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Solution Overview
Problem
Existing methods for removing artifacts from media signals require unique algorithms for each signal permutation, leading to inefficiencies and increased processing requirements, especially when upconverted signals are processed without reducing data volume.
Innovation Solution
A method and apparatus that receive a media signal, detect and reverse signal permutations, and combine error signals with the original signal to correct errors, allowing for the application of robust existing algorithms without needing unique algorithms for each permutation, thereby reducing processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If unique algorithms are developed for each signal permutation to remove artifacts, then artifact removal effectiveness is improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent applies universality by creating a single artifact removal algorithm that works across multiple signal permutations and formats. Instead of developing unique algorithms for each compression/decompression permutation, the system uses one universal algorithm that can handle various signal types (video, audio, images) and formats (SD, HD, 4K) through a unified processing approach, thereby reducing device complexity while maintaining artifact removal effectiveness
Solution Approach 2:
The patent employs parameter changes by adjusting algorithm parameters based on signal characteristics rather than creating different algorithms. The system detects signal format and permutation type, then modifies parameters of a single core algorithm to adapt to different scenarios, achieving effective artifact removal across multiple signal types without increasing fundamental algorithmic complexity
2Manufacturing precision
If all data from upconverted signals is processed to remove artifacts, then signal quality is improved, but processing time and power consumption increase
Solution Approach 1:
The patent applies the extraction principle by identifying and removing only the artifact components from the signal rather than processing all signal data. The system separates artifacts from genuine signal content and applies correction only to the extracted artifact portions, significantly reducing processing time and power consumption while maintaining signal quality improvement
Solution Approach 2:
The patent implements partial action by applying artifact removal processing selectively rather than uniformly across all signal data. The system identifies regions or time periods where artifacts are present and applies correction only to those specific portions, avoiding unnecessary processing of clean signal segments and thereby reducing overall processing time and energy consumption
3Manufacturing precision
If all data from upconverted signals is processed to remove artifacts, then signal quality is improved, but power consumption increases
Solution Approach 1:
The patent applies the extraction principle by identifying and removing only the artifact components from the signal rather than processing all signal data. The system separates artifacts from genuine signal content and applies correction only to the extracted artifact portions, significantly reducing processing time and power consumption while maintaining signal quality improvement
Solution Approach 2:
The patent implements partial action by applying artifact removal processing selectively rather than uniformly across all signal data. The system identifies regions or time periods where artifacts are present and applies correction only to those specific portions, avoiding unnecessary processing of clean signal segments and thereby reducing overall processing time and energy consumption
Data Source
AI summary
A method and apparatus provide for improving signal quality. The method includes receiving a first media signal, such as a video signal, in a first format, such as 1080p. The provided video signal is one that is created by upsampling a video signal recorded in a format having a lower sampling rate. The method also includes obtaining a second signal indicative of error within the first media signal. The second signal is in a second format, such as the format having a lower sampling rage in which the video signal was recorded. The signal is processed to place the second signal in the format of the first signal. Then, the estimated error signal is combined with the original signal to arrive at an error corrected output.