JPEG Image Compression Algorithm
The JPEG image compression algorithm employs 8x8 Discrete Cosine Transform (DCT), utilizes quantization tables for coefficient quantization, and implements Huffman encoding for final compression
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The JPEG image compression algorithm employs 8x8 Discrete Cosine Transform (DCT), utilizes quantization tables for coefficient quantization, and implements Huffman encoding for final compression
1. First, implement Discrete Cosine Transform (DCT) to eliminate data redundancy through frequency domain conversion; 2. Quantize DCT coefficients using predefined quantization tables with adjustable compression ratios; 3. Apply Huffman encoding to quantized coefficients for entropy reduction. The complete implementation consists of a main program coordinating two subroutines: DCT Quantization and Huffman Encoding modules.