Band-Pass Filters for Motion-Compensated Reference Down-Sampling
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Solution Overview
Problem
High-definition video applications face challenges of high bandwidth and storage demands due to the high bitrate of I-pictures, which are not dominant in the encoded video, limiting large-scale deployment in video monitoring systems.
Innovation Solution
Implement motion compensation interpolation with reference resampling using band-pass filters to down-sample reference pictures, generating reference blocks for processing target pictures with different resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-definition video is used to improve video quality, then video quality is improved, but bandwidth and storage demands increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the resolution of reference pictures based on the resolution of current pictures. When the current picture has lower resolution, the system down-samples the reference picture to match, reducing the amount of data processed and stored while maintaining quality through motion compensation interpolation. This resolves the contradiction by adapting video parameters to the actual usage scenario rather than always maintaining high definition.
2Productivity
If motion compensation interpolation with reference down-sampling is applied, then compression efficiency is improved, but processing complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-processing reference pictures through down-sampling and filtering operations before they are used for motion compensation. The reference picture is first down-sampled to match the current picture's resolution, then filtered using appropriate filters (such as bilinear or bicubic interpolation filters) to prepare it for efficient motion compensation. This preliminary processing simplifies the subsequent compression operations and improves overall compression efficiency.
Data Source
AI summary
The present disclosure provides systems and methods for processing video content using motion compensation interpolation. The methods include: in response to a target picture and a reference picture having different resolutions, applying a band-pass filter to the reference picture, to perform a motion compensated interpolation with reference down-sampling to generate a reference block; and encoding or decoding a block of the target picture using the reference block.