ORG.IPEP:
imgtxtenh - Tool for enhancing noisy scanned text images
The function of 'imgtxtenh' is to clean/enhance noisy scanned text images, which could be printed or handwritten text. It takes as input an image and generates as output another image of the same size. It supports all the input/output image formats that the linked ImageMagick library supports.
Currently only two techniques are implemented, which are the method of Sauvola [1], and a simple modification [2] of the method of Sauvola that generates a grayscale image instead of binary foreground-background decisions. For explanation of the usage, execute:
./imgtxtenh -h
If this software is used in research, any publication resulting from it is required to cite the reference [2] below.
The procedure for compiling is:
cmake -DCMAKE_BUILD_TYPE=Release ..
make
$ imgtxtenh -t wolf page-010.jpg page-010.ite.png
imgtxtenh: enhancing by Sauvola: width=80pixels, mfct=0.2, sfct=0.5
imgtxtenh: removed 7858 small components from a total of 10400 (min. area: 6 pixels^2)
[1] Sauvola, J. and Pietikainen, M. Adaptive document image binarization. Pattern Recognition, 33(2):225–236, 2000.
[2] M. Villegas, V. Romero, and J. A. Sánchez. On the Modification of Binarization Algorithms to Retain Grayscale Information for Handwritten Text Recognition. In IbPria 2015.
The MIT License (MIT)
Copyright (c) 2012-present, Mauricio Villegas mauvilsa@upv.es
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.