Document Image De-warping for Text/Graphics Recognition
Proceedings of the Joint IAPR International Workshop on Structural, Syntactic, and Statistical Pattern Recognition
Automatic Thresholding of Gray-level Using Multi-stage Approach
ICDAR '03 Proceedings of the Seventh International Conference on Document Analysis and Recognition - Volume 1
An Automated Defect Management for Document Images
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 2 - Volume 2
A Comparison of Binarization Methods for Historical Archive Documents
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
Text/Graphic labelling of Ancient Printed Documents
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
Optimal combination of document binarization techniques using a self-organizing map neural network
Engineering Applications of Artificial Intelligence
An Automatic Method for Video Character Segmentation
ICIAR '08 Proceedings of the 5th international conference on Image Analysis and Recognition
Estimation of proper parameter values for document binarization
CGIM '08 Proceedings of the Tenth IASTED International Conference on Computer Graphics and Imaging
Text segmentation in natural scenes using toggle-mapping
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Image retrieval systems based on compact shape descriptor and relevance feedback information
Journal of Visual Communication and Image Representation
Adaptive thresholding methods for documents image binarization
MCPR'11 Proceedings of the Third Mexican conference on Pattern recognition
Adaptive fuzzy text segmentation in images with complex backgrounds using color and texture
CAIP'05 Proceedings of the 11th international conference on Computer Analysis of Images and Patterns
Automatic evaluation of document binarization results
CIARP'05 Proceedings of the 10th Iberoamerican Congress conference on Progress in Pattern Recognition, Image Analysis and Applications
Extraction of handwritten text from carbon copy medical form images
DAS'06 Proceedings of the 7th international conference on Document Analysis Systems
A new pyramidal approach for the address block location based on hierarchical graph coloring
ICIAR'07 Proceedings of the 4th international conference on Image Analysis and Recognition
Biometric identification system's performance enhancement by improving registration progress
CCBR'12 Proceedings of the 7th Chinese conference on Biometric Recognition
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A new method is presented for adaptive document image binarization, where the page is considered as a collection of subcomponents such as text, background and picture. The problems caused by noise, illumination and many source type related degradations are addressed. The algo= rithm uses document characteristics to determine (surface) attributes, often used in document segmentation. Using characteristics analysis, two new algorithms are applied to determine a local threshold for each pixel. An algorithm based on soft decision control is used for thresholding background and picture regions. An approach utilizing local mean and variance of gray values is applied to textual regions. Tests were performed with images including different types of document components and degradations. The results show that the method adapts and performs well in each case.