Integrating A Smooth Psychovisual Threshold Into An Adaptive JPEG Image Compression

Suryana, Nanna and Abu, Nur Azman and Ernawan, Ferda (2014) Integrating A Smooth Psychovisual Threshold Into An Adaptive JPEG Image Compression. Journal Of Computers, 9 (3). pp. 644-653. ISSN 1796-203X

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The visual quality image output of JPEG compression is determined by quantization process.The popular quality factor in the extended JPEG image compression has been widely used to scale up the quantization tables.The scaling quantization table using quality factor is used to determine the quality image output.The scaling up on the quantization tables increases their values uniformly thus produces higher compression performance.However,the effects of the scaling up on the human visual system have not been taken into consideration.This paper examines the quantization table design based on adaptive psychovisual threshold and numerical analysis of the compression performance in terms of quality image reconstruction and average bit length of Huffman code.The comparison between extended JPEG image compression using the typical quality factor and quality scale of psychovisual threshold has been done.The experimental results of adaptive quantization tables based on psychovisual threshold show an improvement on the quality of image reconstruction at the lower average bit length of Huffman's code.

Item Type: Article
Uncontrolled Keywords: image compression, psychovisual threshold, adaptive quantization tables, quality image compression, quantization process
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Information and Communication Technology
Depositing User: Mohd. Nazir Taib
Date Deposited: 16 Aug 2019 03:43
Last Modified: 07 Jul 2021 10:51
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