NDLI: Compensation for specular illumination in acne patients images using median filter

Content Provider	IEEE Xplore Digital Library
Author	Khan, J. Malik, A.S. Azura, M.A. Kamel, N. Dass, S.C.
Copyright Year	2014
Description	Author affiliation: Dept. of Fundamental & Appl. Sci., Univ. Teknol. PETRONAS, Tronoh, Malaysia (Dass, S.C.) \|\| Dept. of Electr. & Electron. Eng., Univ. Teknol. PETRONAS, Tronoh, Malaysia (Khan, J.; Malik, A.S.; Kamel, N.) \|\| Dept. of Dermatology, Hosp. Kuala Lumpur, Kuala Lumpur, Malaysia (Azura, M.A.)
Abstract	Specular illumination in digital images is one of the main causes, affecting the performance of image analysis techniques. The causes of this artifact include shiny nature of the surface on which the light is falling and the intensity and distribution of light. In this paper, it is explained that how specularly illuminated spots in the color images of acne patients can be detected and compensated for that. For detecting the specular illumination spots, a fixed threshold value were used in each of the three channels of the RGB color space and after that median filtering was performed in G and B channels only. Experimentation was carried out on twenty images of acne patients and subjectively satisfactory results were obtained. The effect of filter size on processing time was also examined and it was found that with increasing filter size, the time complexity of image processing also increases.
Sponsorship	Malaysia Sect. CAS Chapt.
Starting Page	1
Ending Page	4
File Size	371035
Page Count	4
File Format	PDF
e-ISBN	9781479946532
DOI	10.1109/ICIAS.2014.6869492
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-03
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Maximum likelihood detection Image color analysis filter size Lighting Color Nonlinear filters median filter specular illumination Acne lesion Colored noise
Content Type	Text
Resource Type	Article

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