NDLI: Image quality assessment based on included angle cosine and discrete 2-D wavelet transform

Content Provider	IEEE Xplore Digital Library
Author	Junfeng Li Wenzhan Dai Weihua Xiong
Copyright Year	2009
Description	Author affiliation: Department of Automatic control, Zhejiang Sci-Tech University, HangZhou 310018, China (Junfeng Li; Wenzhan Dai; Weihua Xiong)
Abstract	In this paper, a novel image quality assessment based on the characteristics of wavelet coefficients of images and included angle cosine is proposed. Firstly, the normal image and the images assessed are decomposed into several levels by means of wavelet transform respectively. Secondly, the approximation and detail coefficients of normal image are as the referenced sequences and the approximation and detail coefficients of the images assessed are as the comparative sequences respectively. And the included angle cosine values are calculated between the referenced sequences and the comparative sequences respectively. Moreover, image quality assessment matrix of every image assessed can be constructed based on the included angle cosine values and image quality can be assessed. The algorithm makes full use of perfect integral comparison mechanism of included angle cosine and the well matching of discrete wavelet transform with multi-channel model of human visual system. Experimental results show that the proposed algorithm can not only evaluate the integral and detail quality of image fidelity accurately but also bears more consistency with the human visual system than the traditional method PSNR.
Starting Page	674
Ending Page	679
File Size	735031
Page Count	6
File Format	PDF
ISBN	9781424427222
DOI	10.1109/CCDC.2009.5194851
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	PSNR Image processing Humans Educational institutions Discrete wavelet transforms Image quality Visual system Included Angle Cosine Discrete 2-D Wavelet Transform Distortion measurement Image Quality Assessment Signal to noise ratio Testing
Content Type	Text
Resource Type	Article

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