Back to articles
Articles
Volume: 31 | Article ID: art00014
Image
Additional lossless compression of JPEG images based on BPG
  DOI :  10.2352/ISSN.2470-1173.2019.11.IPAS-263  Published OnlineJanuary 2019
Abstract

The task of additional lossless compression of JPEG images is considered. We propose to decode JPEG image and recompress it using lossy BPG (Better Portable Graphics) codec based on a subset of the HEVC open video compression standard. Then the decompressed and smoothed BPG image is used for calculation and quantization of DCT coefficients in 8x8 image blocks using quantization tables of the source JPEG image. A difference between obtained quantized DCT coefficients and quantized DCT coefficients of the source JPEG image (prediction error) is calculated. The difference is lossless compressed by a proposed context modeling and arithmetical coding. In this way the source JPEG image is replaced by two files: compressed BPG image and the compressed difference which needed for lossless restoration of the source JPEG image. It is shown that the proposed approach provides compression ratios comparable with state of the art PAQ8, WinZip and STUFFIT file archivers. At the same time BPG images may be used for fast preview of compressed JPEG images.

Subject Areas :
Views 41
Downloads 1
 articleview.views 41
 articleview.downloads 1
  Cite this article 

Mykola Ponomarenko, Oleksandr Miroshnichenko, Vladimir Lukin, Karen Egiazarian, "Additional lossless compression of JPEG images based on BPGin Proc. IS&T Int’l. Symp. on Electronic Imaging: Image Processing: Algorithms and Systems XVII,  2019,  pp 263-1 - 263-7,  https://doi.org/10.2352/ISSN.2470-1173.2019.11.IPAS-263

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2019
72010604
Electronic Imaging
2470-1173
Society for Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151 USA