Image Compression Using Pre-Synchronized Reference Data
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Solution Overview
Problem
Conventional image compression techniques are limited in improving data compression rates, especially in environments with limited bandwidth, such as underwater or satellite communication, and in storage systems like cloud or distributed systems, where high information transmission/reception speed is required.
Innovation Solution
An image processing apparatus and method that utilizes pre-synchronized image data to select a reference image based on similarity calculations, allowing for improved compression of original image data by eliminating redundancy between non-temporally continuous images, and includes a data receiving apparatus for restoring compressed image data to its original form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional image compression techniques are used to eliminate spatial redundancy, then the data size is reduced, but the compression rate improvement is limited
Solution Approach 1:
The patent applies preliminary action by pre-synchronizing and storing reference images before the actual compression process. The data receiving apparatus stores multiple reference images in advance, which are then used during compression to achieve higher compression rates. This pre-preparation of reference data enables more effective temporal redundancy elimination without limiting the compression improvement.
2Device complexity
If only spatial redundancy elimination is used in compression, then the compression process is simple, but the compression rate cannot be improved further
Solution Approach 1:
The patent transitions from two-dimensional spatial redundancy elimination to three-dimensional compression by incorporating the time dimension through temporal redundancy elimination. By comparing current image data with previously stored reference images across different time points, the system achieves higher compression rates without excessively increasing process complexity.
3Productivity
If pre-synchronized image data is used for compression, then the compression ratio is enhanced, but the system complexity increases
Solution Approach 1:
The patent segments the compression system into distinct functional modules: a data receiving apparatus that handles reference image storage and management, and an encoding apparatus that performs the actual compression using selected reference images. This segmentation allows each component to be optimized independently, managing system complexity while achieving enhanced compression ratios through temporal redundancy elimination.
Data Source
AI summary
An image processing apparatus includes a storage unit, a selection unit, and an encoding unit. The storage unit stores pre-synchronized image data. The selection unit selects as a reference image at least one of the pre-synchronized image data based on a result of comparison between the pre-synchronized image data and an original image data. The encoding unit generates a compressed image data by compressing the original image data using the reference image. The selection unit calculates similarity between the original image data and at least one of the pre-synchronized image data and selects the reference image among the synchronized image data based on the calculated similarity.