18 search results - page 1 / 4 » An Adaptive Threshold Method for Gray Scale Character Images |
MVA
1996
13 years 6 months ago
1996
Gray-scale document images are binarized in order to perform optical character recognition (OCR). To perform this binarization, a variety of techniques have been proposed for perf...
CVPR
2001
IEEE
14 years 6 months ago
2001
IEEE
The problem of binarization of gray level images acquired under nonuniform illumination is reconsidered. Yanowitz and Bruckstein proposed to use for image binarization an adaptive...
ICPR
2010
IEEE
13 years 8 months ago
2010
IEEE
Abstract--We attempt to evaluate the efficacy of six unsupervised evaluation method to tune Sauvola's threshold in optical character recognition (OCR) applications. We propose...
CAE
2007
13 years 7 months ago
2007
The visualization of color images in gray scale has high practical and theoretical importance. Neither the existing local, gradient based methods, nor the fast global techniques g...
ICDAR
1999
IEEE
13 years 9 months ago
1999
IEEE
In this article, we propose a new method that combines the use of a global threshold and a window-based scheme for computing local thresholds. The latter scheme compares the contr...