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Pre-processing technique based on discrete cosine transform (DCT) and anisotropic contrast diffusion for wireless capsule endoscopy images

Shahril, Rosdiana and Arianti, Diah and Baharun, Sabariah and Islam, A. K. M. Muzahidul and Komaki, Shozo (2014) Pre-processing technique based on discrete cosine transform (DCT) and anisotropic contrast diffusion for wireless capsule endoscopy images. In: 3rd IEEE Conference on Biomedical Engineering and Sciences, IECBES 2014, 8 December 2014 - 10 December 2014, Kuala Lumpur, Malaysia.

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Official URL: http://dx.doi.org/10.1109/IECBES.2014.7047646

Abstract

Wireless capsule endoscopy (WCE) is useful to detect abnormal area in human digestive tract. However, many WCE images have low quality such as rather dark and noisy. Pre-processing is an important step in Computer Aided Detection (CAD) system to enhance the quality of WCE images in order to detect the abnormalities easier. To further enhance the image quality, anisotropic diffusion with Hessian matrix proposed by B. Li is applied to get contrast the image. However, this method still has weakness where an image is not sharp. To overcome this problem, Discrete Cosine Transform (DCT) is employed with anisotropic contrast diffusion in our proposed scheme. Experimental results of the proposed method are also presented in this paper.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:human digestive tract, pre-processing, wireless capsule endoscopy, wireless capsule endoscopy image
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Malaysia-Japan International Institute of Technology
ID Code:59429
Deposited By: Haliza Zainal
Deposited On:18 Jan 2017 01:50
Last Modified:15 Aug 2021 01:02

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