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An introduction to digital image processing
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The article was published on 1986-01-01 and is currently open access. It has received 1745 citations till now. The article focuses on the topics: Digital image processing & Image processing.read more
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Proceedings ArticleDOI
A Method of Synthesizing Handwritten Chinese Images for Data Augmentation
Xi Shen,Ronaldo Messina +1 more
TL;DR: This work proposes a novel strategy, in the particular case of Chinese characters, to generate synthetic lines of text, given samples of the isolated characters, using the well-known CASIA database to train MDLSTM-RNN models and also in the creation of synthetic line images.
Journal ArticleDOI
Robust document binarization with OFF center-surround cells
TL;DR: The proposed algorithm combines the characteristics of the OFF center-surround cells of the HVS with the classic Otsu binarization technique, increasing the efficiency of the algorithm and reducing the extracted noise in the final output.
Proceedings ArticleDOI
Local Contrast Segmentation to Binarize Images
Marco Block,Raúl Rojas +1 more
TL;DR: A new binarization algorithm for degraded document images is proposed, based on positive and negative pixel energies using the Laplacian of an image, which is able to detecting connected components in connected components.
Proceedings ArticleDOI
Binarization of Degraded Document Images using Convolutional Neural Networks Based on Predicted Two-Channel Images
TL;DR: The results presented in this work show that the approach fully outperforms SegNet and U-net when trained by the original images and demonstrates competitiveness and robustness compared with state-of-the-art results using the DIBCO database.
Proceedings ArticleDOI
Improved Thresholding Method for Enhancing Jawi Binarization Performance
TL;DR: A new approach to calculating k values for the NICK binarization method is proposed: the k value is set based on the standard deviation of the image to indicate that the k values produced by the proposed method can adapt to the state of the manuscript and that using them for NICK thresholding can increase binarized performance.
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Survey over image thresholding techniques and quantitative performance evaluation
Mehmet Sezgin,Bulent Sankur +1 more