JPEG image compression

You can compress color (RGB) images using this function. it relies on the well-known JPEG algorithm.

JPEG Algorithm:

0. Loading and initializing the raw image

1. Convert RGB image to YIQ or YCbCr image
2. Down-sampling the image
3. Forward Discrete Cosine Transform (DCT)
4. Quantization
5. Huffman Encoding: Compressed data
6. Decoding
7. De-quantization
8. Inverse Discrete Cosine Transform (IDCT)
9. Up-sampling
10. Convert YIQ to RGB image: Compressed image