COOL-CHIC: Coordinate-based Low Complexity Hierarchical Image Codec

Understand

We introduce COOL-CHIC, a Coordinate-based Low Complexity Hierarchical Image Codec.

• It is a learned alternative to autoencoders with 629 parameters and 680 multiplications per decoded pixel.
• COOL-CHIC offers compression performance close to modern conventional MPEG codecs such as HEVC and is competitive with popular autoencoder-based systems.
• This method is inspired by Coordinate-based Neural Representations, where an image is represented as a learned function which maps pixel coordinates to RGB values.