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Local Contrast and Mean Thresholding in Image Binarization

by O. Imocha Singh, Tejmani Sinam, O. James, T. Romen Singh
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 51 - Number 6
Year of Publication: 2012
Authors: O. Imocha Singh, Tejmani Sinam, O. James, T. Romen Singh
10.5120/8044-1362

O. Imocha Singh, Tejmani Sinam, O. James, T. Romen Singh . Local Contrast and Mean Thresholding in Image Binarization. International Journal of Computer Applications. 51, 6 ( August 2012), 4-10. DOI=10.5120/8044-1362

@article{ 10.5120/8044-1362,
author = { O. Imocha Singh, Tejmani Sinam, O. James, T. Romen Singh },
title = { Local Contrast and Mean Thresholding in Image Binarization },
journal = { International Journal of Computer Applications },
issue_date = { August 2012 },
volume = { 51 },
number = { 6 },
month = { August },
year = { 2012 },
issn = { 0975-8887 },
pages = { 4-10 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume51/number6/8044-1362/ },
doi = { 10.5120/8044-1362 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:49:40.563687+05:30
%A O. Imocha Singh
%A Tejmani Sinam
%A O. James
%A T. Romen Singh
%T Local Contrast and Mean Thresholding in Image Binarization
%J International Journal of Computer Applications
%@ 0975-8887
%V 51
%N 6
%P 4-10
%D 2012
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Binarization is a process of separation of pixel values of an input image into two pixel values like white as background and black as foreground. It is an important part in image processing and it is the first step in many document analysis and OCR processes. Most of the binarization techniques associate a certain intensity value called threshold which separate the pixel values of the concerned input grayscale image into two classes like background and foreground. Each and every pixel should be compared with the threshold and transformed to its respective class according to the threshold value. Thus threshold takes a major role in binarization. Hence determination of proper threshold value in binarization is a major factor of being a good binarised image and it can be approached in two categories like global thresholding and local thresholding techniques. In uniform contrast distribution of background and foreground documents, global thesholding is more suitable than that of local thresholding one. In degraded documents, where considerable background noise or variation in contrast and illumination exists, local technique is more suitable than that of global one. In this paper a local thresholding technique using local contrast and mean is described. Local adaptation is carried out with the local contrast and mean.

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Index Terms

Computer Science
Information Sciences

Keywords

Binarization local thresholding local min local max and local mean

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