This post is about digital images.
Color Models
A color model is a system to represent a color numerically.
You can read this post about color models.
Digital Image Compression Formats
Digital image compression formats:
- Lempel-Ziv-Welch
- Run-length encoding
Lempel-Ziv-Welch
Lempel-Ziv-Welch (LZW) is a universal lossless data compression algorithm.
It was created by Abraham Lempel, Jacob Ziv, and Terry Welch, and it was published by Welch in 1984 as an improved implementation of the LZ78 algorithm published by Lempel and Ziv in 1978.
It is used on digital images like GIF.
Discrete cosine transformed
Discrete cosine transformed (DCT) is used on digital images like JPG.
Run-length encoding
Run-length encoding (RLE) is a form of lossless data compression
External References
- DCT
- Wikipedia community; “Discrete cosine transformed“; Wikipedia