JPEG Encoder

🎞️ Audio-Video Data Processing uni assignment

The encoder part

• Dividing the image into blocks of 8x8 pixels
• Converting each pixel value from RGB to YUV
• Subsampling and Upsampling of the U and V block matrices
• Performing Forward DCT (Discrete Cosine Transform) and Quantization on each 8x8 pixels block
• Performing Entropy Encoding (zig-zag parsing and run-length encoding)

The decoder part

• Performing Entropy Decoding (run-length decoding and forming an 8x8 block by zig-zag parsing)
• Performing DeQuantization and Inverse DCT (Discrete Cosine Transform) on each 8x8 pixels block
• Converting each pixel value from YUV to RGB
• Recreating the RGB matrix from the blocks
• Composing the final decoded PPM image