Video Compression Decimation Filter and Difference Tool
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Solution Overview
Problem
Existing video compression techniques are 'lossy,' leading to data loss and inaccuracies in video representation after decompression, as they fail to effectively eliminate spatial and temporal redundancy without compromising the original data.
Innovation Solution
A video compression system employing a decimation filter to remove spatial and temporal components, followed by a video codec for further compression, and a comparator to generate a decompression tool that encodes differences between the original and reconstructed datastreams, allowing for accurate reconstruction at the receiving end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lossy video compression techniques are used to reduce bandwidth and storage requirements, then compression efficiency is improved, but data accuracy and representation fidelity deteriorate
Solution Approach 1:
The patent segments the compression process into distinct functional blocks: a lossy compression stage that reduces data size, a lossless compression stage that further compresses without additional loss, and a decompression stage that reconstructs the original data. This segmentation allows each stage to optimize for its specific function while maintaining overall data fidelity.
Solution Approach 2:
The patent introduces an intermediary lossless compression stage between the lossy compression and decompression processes. This intermediary component captures and preserves the differences between the compressed and original data, acting as a mediator that prevents information loss from propagating through the system.
2Loss of energy
If aggressive decimation filtering is applied to remove spatial and temporal components, then bandwidth reduction is improved, but reconstruction accuracy deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the output of the decimation filter is compared with the original input signal. The difference signal is captured and fed back through a lossless compression stage, allowing the system to compensate for the effects of aggressive filtering and reconstruct the original signal with high accuracy.
Solution Approach 2:
The patent performs preliminary lossless compression on the difference signal between the original and filtered datastreams before transmission. This preliminary action preserves the critical information needed for accurate reconstruction, allowing the receiver to perfectly recreate the original signal even after aggressive decimation filtering.
Data Source
AI summary
Systems and methods presented herein provide for video compression and decompression. In one embodiment, a video compression system includes a decimation filter operable to receive a video datastream, and to filter the video datastream to remove spatial data components and temporal data components of the video datastream. The system also includes a video codec operable to compress the filtered video datastream and a comparator operable to compare the video datastream to the filtered-compressed video datastream, and to determine a difference video datastream based on the comparison. The system also includes a generator operable to generate a tool for decompressing the filtered-compressed video datastream based on the difference video datastream.