Journal ArticleDOI
An efficient gray-level thresholding algorithm for historic document images
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TLDR
A new efficient algorithm for binarization of historical documents is presented and its performance is analyzed by comparing it to other nineteen classic thresholding algorithms using measures like precision, recall, accuracy, specificity and a fidelity index.About:
This article is published in Journal of Cultural Heritage.The article was published on 2008-04-01. It has received 20 citations till now. The article focuses on the topics: Thresholding & Balanced histogram thresholding.read more
Citations
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Journal ArticleDOI
Transition pixel: A concept for binarization based on edge detection and gray-intensity histograms
TL;DR: A novel binarization method based on the concept of transition pixel, a generalization of edge pixels, is introduced, which shows how to adjust the threshold of several binary threshold methods, using the gray-intensity mean and variance of the pixels in the transition set.
Journal ArticleDOI
Audiovisual production, restoration-archiving and content management methods to preserve local tradition and folkloric heritage
TL;DR: In this article, a methodological framework for the production, digitization, authoring and presentation of audiovisual content related to traditional music and dances is proposed for preservation and demonstration of local tradition and cultural heritage.
Journal ArticleDOI
A new thresholding algorithm for document images based on the perception of objects by distance
TL;DR: A new method to enhance and binarize document images with several kind of degradation is proposed, based on the idea that by the absolute difference between a document image and its background it is possible to effectively emphasize the text and attenuate degraded regions.
Proceedings ArticleDOI
Text Line Segmentation in Images of Handwritten Historical Documents
TL;DR: The proposed method worked well even with difficult images and it achieved an 82.18% of correct segmented lines for the authors' database, compared with other recent proposal for automatic line extraction on the same test images.
Journal ArticleDOI
Transition thresholds and transition operators for binarization and edge detection
TL;DR: This work introduces a novel unsupervised thresholding for unimodal histograms to estimate the transition sets and proposes the simple edge transition operator for detecting edges, and presents dilation and incidence transition operators to refine the transition set.
References
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Journal ArticleDOI
A mathematical theory of communication
TL;DR: This final installment of the paper considers the case where the signals or the messages or both are continuously variable, in contrast with the discrete nature assumed until now.
Journal ArticleDOI
A new method for gray-level picture thresholding using the entropy of the histogram
TL;DR: Two methods of entropic thresholding proposed by Pun (Signal Process.,2, 1980, 223–237;Comput.16, 1981, 210–239) have been carefully and critically examined and a new method with a sound theoretical foundation is proposed.
Journal ArticleDOI
Minimum error thresholding
Josef Kittler,John Illingworth +1 more
TL;DR: A computationally efficient solution to the problem of minimum error thresholding is derived under the assumption of object and pixel grey level values being normally distributed and is applicable in multithreshold selection.
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