The goal is to implement the baseline sequential DCT based (Lossy) JPEG encoder and decoder as described by the ISO-IEC-10918-1-1993 standard. The major steps in JPEG coding involve:
- Pre-processing of the image
- RGB ↔ YCbCr conversion
- Subsampling 4:4:4, 4:2:2 and 4:2:0
- Samples dissociation
- Block [8x8] DCT Transform: Spatial Domain Representation ↔ Frequency Domain Representation
- Image compression
- Block [8x8] Quantization and De-Quantization
- Run-length calculation
- Huffman coding
For a more detailed explanation of the steps -in Greek- check the associated PDF file.
Georgios Balaouras
Data Scientist
My research interests include Computer Vision with a healthy pinch of problem solving.