NDLI: Algorithm of image enhancement based on order morphology filtering and image entropy difference

Content Provider	IEEE Xplore Digital Library
Author	Jian-Nan Chi Dong-Shu Wang Yong Duan Xin-He Xu
Copyright Year	2005
Description	Author affiliation: Inst. of Artificial Intelligence & Robotics, Northeastern Univ., Sheng Yang, China (Jian-Nan Chi; Dong-Shu Wang; Yong Duan; Xin-He Xu)
Abstract	According to correlative conception and properties of order morphology transformation, a non-linear weighted mean value filter is constructed to remove high frequence noise such Gaussian and impulse noise. Then an approximated midpoint value filter, which can reject uniform distribution noise is given by improving the weighted mean value filter. Based on the above, a new image enhancement algorithm is proposed. In this algorithm, weighted mean value of the image about structuring elements of different directions is calculated and used to identify the edge of the image; local average value and image entropy difference is applied to control enhancement coefficients. So the target and edge of the image are elevated while high frequency noise of the image is restrained. A comparison of average value, standard deviation and image entropy between the enhanced image and its original illustrates that contrast of the image is also improved.
Sponsorship	IEEE Syst., Man and Cybernetics Tech. Comm. on Cybernetics, Hong Kong Polytechnic Univ. Hebei Univ. South China Univ. Chongqing Univ. Sun Yat-sen Univ. Harbin Inst. of Technol. and Int. Univ. in Germany
Starting Page	5105
Ending Page	5110
File Size	725815
Page Count	6
File Format	PDF
ISBN	0780390911
DOI	10.1109/ICMLC.2005.1527843
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Filtering algorithms Image enhancement Morphology Entropy Frequency Filters Histograms Gaussian noise Image processing Spatial resolution noise restraining order morphology transformation image entropy difference structuring elements
Content Type	Text
Resource Type	Article

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