Soft Compression for Lossless Image Coding Based on Shape Recognition

Soft compression is a lossless image compression method that is committed to eliminating coding redundancy and spatial redundancy simultaneously. To do so, it adopts shapes to encode an image. In this paper, we propose a compressible indicator function with regard to images, which gives a threshold...

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Main Authors: Gangtao Xin, Pingyi Fan
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/23/12/1680
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author Gangtao Xin
Pingyi Fan
author_facet Gangtao Xin
Pingyi Fan
author_sort Gangtao Xin
collection DOAJ
description Soft compression is a lossless image compression method that is committed to eliminating coding redundancy and spatial redundancy simultaneously. To do so, it adopts shapes to encode an image. In this paper, we propose a compressible indicator function with regard to images, which gives a threshold of the average number of bits required to represent a location and can be used for illustrating the working principle. We investigate and analyze soft compression for binary image, gray image and multi-component image with specific algorithms and compressible indicator value. In terms of compression ratio, the soft compression algorithm outperforms the popular classical standards PNG and JPEG2000 in lossless image compression. It is expected that the bandwidth and storage space needed when transmitting and storing the same kind of images (such as medical images) can be greatly reduced with applying soft compression.
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spelling doaj.art-e8e44cf074774a03b5bf9d86688635072023-11-23T08:11:35ZengMDPI AGEntropy1099-43002021-12-012312168010.3390/e23121680Soft Compression for Lossless Image Coding Based on Shape RecognitionGangtao Xin0Pingyi Fan1Department of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaSoft compression is a lossless image compression method that is committed to eliminating coding redundancy and spatial redundancy simultaneously. To do so, it adopts shapes to encode an image. In this paper, we propose a compressible indicator function with regard to images, which gives a threshold of the average number of bits required to represent a location and can be used for illustrating the working principle. We investigate and analyze soft compression for binary image, gray image and multi-component image with specific algorithms and compressible indicator value. In terms of compression ratio, the soft compression algorithm outperforms the popular classical standards PNG and JPEG2000 in lossless image compression. It is expected that the bandwidth and storage space needed when transmitting and storing the same kind of images (such as medical images) can be greatly reduced with applying soft compression.https://www.mdpi.com/1099-4300/23/12/1680lossless image compressioninformation theorystatistical distributionscompressible indicator functionimage set compression
spellingShingle Gangtao Xin
Pingyi Fan
Soft Compression for Lossless Image Coding Based on Shape Recognition
Entropy
lossless image compression
information theory
statistical distributions
compressible indicator function
image set compression
title Soft Compression for Lossless Image Coding Based on Shape Recognition
title_full Soft Compression for Lossless Image Coding Based on Shape Recognition
title_fullStr Soft Compression for Lossless Image Coding Based on Shape Recognition
title_full_unstemmed Soft Compression for Lossless Image Coding Based on Shape Recognition
title_short Soft Compression for Lossless Image Coding Based on Shape Recognition
title_sort soft compression for lossless image coding based on shape recognition
topic lossless image compression
information theory
statistical distributions
compressible indicator function
image set compression
url https://www.mdpi.com/1099-4300/23/12/1680
work_keys_str_mv AT gangtaoxin softcompressionforlosslessimagecodingbasedonshaperecognition
AT pingyifan softcompressionforlosslessimagecodingbasedonshaperecognition