Universal Image Compressor Kernel for Lossless and Lossy Modes
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Solution Overview
Problem
Conventional image compression systems require separate and costly hardware for lossless and lossy compression modes, lacking a cost-effective solution for supporting both modes simultaneously.
Innovation Solution
A universal image compressor and decompressor that uses a shared hardware approach, where a lossless compression kernel is reused for both modes by controlling the application of source quantization, allowing switching between lossless and lossy compression by bypassing or applying source quantization before the lossless compression function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate image compressors are used for lossless and lossy compression, then both compression modes can be supported, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal image compressor that can perform both lossless and lossy compression modes using a single device. The lossless compression kernel is designed to be reusable for both modes, with a source quantization unit that can be selectively activated. When disabled, the kernel performs lossless compression; when enabled, it performs lossy compression. This multi-functional design eliminates the need for separate compressors for each mode, directly resolving the contradiction between versatility and device complexity.
2Adaptability or versatility
If separate image compressors are used for lossless and lossy compression, then both compression modes can be supported, but implementation cost increases
Solution Approach 1:
The patent implements a universal image compressor that can perform both lossless and lossy compression modes using a single device. The lossless compression kernel is designed to be reusable for both modes, with a source quantization unit that can be selectively activated. When disabled, the kernel performs lossless compression; when enabled, it performs lossy compression. This multi-functional design eliminates the need for separate compressors for each mode, directly resolving the contradiction between versatility and device complexity.
3Adaptability or versatility
If separate image compressors are used for lossless and lossy compression, then both compression modes can be supported, but power consumption increases
Solution Approach 1:
The patent implements a universal image compressor that can perform both lossless and lossy compression modes using a single device. The lossless compression kernel is designed to be reusable for both modes, with a source quantization unit that can be selectively activated. When disabled, the kernel performs lossless compression; when enabled, it performs lossy compression. This multi-functional design eliminates the need for separate compressors for each mode, directly resolving the contradiction between versatility and device complexity.
Data Source
AI summary
An image compression method has at least the following steps: receiving source pixel data of a plurality of blocks of a frame; when a lossless compression mode is enabled for the frame, bypassing a source quantization operation and applying a lossless compression kernel to source pixel data of each of the blocks; and when a lossy compression mode is enabled for the frame, applying the source quantization operation to the source pixel data of each of the blocks to generate input pixel data of each of the blocks, and applying the lossless compression kernel to the input pixel data of each of the blocks. For example, the source quantization operation employs an adaptive quantization parameter for each of the blocks such that a size of compressed data of the frame generated under the lossy compression mode does not exceed a bit budget.