lossless-image-compression

NBLI is a fast, better lossless image compression algorithm. The optimized version (fNBLI) can get 1.5x compression ratio, 8x faster encoding, and 1.2x faster decoding compared to PNG. It can also beat the SOTA JPEG-XL on photographs.

png image-compression image-compressor image-encoder lossless-image-compression jpeg-xl

UpdatedOct 25, 2024
C++

wx257osn2 /qoixx

Star39

Single Header Quite Fast QOI(Quite OK Image Format) Implementation written in C++20

neon simd avx2 image-compression arm-neon cpp20 sve lossless-image-compression cpp20-library qoi arm-sve

UpdatedMay 10, 2025
C++

WangXuan95 /JPEG-LS_extension

Star32

An implementation of JPEG-LS extension (ITU-T T.870).

image-compression jpeg-ls lossless-image-compression image-encode jpeg-ls-extension itu-t870

UpdatedJun 2, 2025

0xd34df00d /hsqoi

Star17

Haskell implementation of the QOI image format

haskell compression image-compression lossless-image-compression

UpdatedJun 30, 2023
Haskell

osamu620 /MatHTJ2K

Star15

A MATLAB implementation of JPEG 2000 Part 1 and Part 15 (HTJ2K) that complies with the conformance testing defined in JPEG 2000 Part 4. The goal of MatHTJ2K is to help a person who wants to develop an HTJ2K-based image compression system to understand the algorithms defined in HTJ2K.

image matlab codec jpeg2000 lossy-image-compression lossless-image-compression jpeg2000-part15 iso-iec-15444 iso-iec-15444-15 itu-t-t-814 htj2k itu-t-t-800

UpdatedApr 24, 2023
MATLAB

zekiguven /pascal_jls

Star15

Delphi / Free Pascal Compitable JPEG-LS Codec

lazarus delphi pascal jpeg freepascal fpc lossy lossless codec lossless-compression-algorithm jpegls lossless-image-compression

UpdatedNov 21, 2018
Pascal

phenopolis /grok.cr

Star15

Crystal bindings for Grok

processing crystal image compression binding decompression image-processing bindings jpeg2000 lossy-image-compression lossless-image-compression jpeg2000-part15 iso-iec-15444 iso-iec-15444-15 itu-t-t-814

UpdatedApr 4, 2024
C

Knewest /Img2WebP

Star10

This Powershell program can convert a variety of file types to WebP losslessly.

converter image png jpeg tiff bmp gif webp apng image-compression dds jpeg2000 heic jpegxr avif webp-conversion lossless-image-compression directdraw-surface jpegxl jpeg1

UpdatedApr 26, 2023
PowerShell

rajyash1904 /Image-Compression-and-Transmission

Star8

Lossless Image Compression and Transmission in Matlab

image compression matlab decompression transmission huffman-coding compression-algorithm huffman-compression-algorithm lossless-compression-algorithm compression-implementations matlab-image-processing-toolbox lossless-data-compression lossless-image-compression

UpdatedMar 6, 2020
MATLAB

xdsopl /dwt

Star6

Discrete Wavelet Transform (DWT) Based Lossless Image Compression with Bitstream Truncation Support

dwt wavelet bitstream truncation lossless-image-compression

UpdatedApr 3, 2025
C

matsuda-lab-tus /Selective-PMO

Star4

Hiroki Kojima, Yasuyo Kita, Ichiro Matsuda, Susumu Itoh, Yusuke Kameda, Kyohei Unno, Kei Kawamura: "Improved Probability Modeling for Lossless Image Coding Using Example Search and Adaptive Prediction", Proceedings of the 25th International Workshop on Advanced Image Technology 2022 (IWAIT 2022), Jan. 2022.

compression lossless codec image-compression lossless-image-compression