Pik is a new lossy image format for the internet. This directory contains an encoder and a decoder for the format.
This project is in the initial research stage, please don't use it for any purpose.
The software currently requires an AVX2 and FMA capable CPU, e.g. Haswell.
Please ensure you have the libpng-dev and libjpeg-dev packages installed.
Then simply run make -j8, which creates cpik and dpik binaries in bin/.
The second command line argument to cpik is a Butteraugli distance (see http://github.com/google/butteraugli), which indicates the largest acceptable error. Larger values lead to smaller files and lower quality. Try 1.0 for a visually lossless result.
- Butteraugli (HVS-aware image differences)
- Brunsli (lossless JPEG repacker)
- Guetzli (JPEG encoder with denser packing)
This is not an official Google product.