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Title: Database of ISAAC numerals

Maintainer: Vojtech Franc (xfrancv@cmp.felk.cvut.cz)
Czech Technical University Prague,
Faculty of Electrical Engineering, Center for Machine Perception 
(http://cmp.felk.cvut.cz)
Last modified: 26-may-2004, Vojtech Franc
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Acknowledgement:
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The database was created under the project: IST-2001-33266 
Inspecting Sewage Systems And Image Analysis by Computer (ISAAC).
The datbase can be used freely for academic, non-profit purposes.
If you intend to use the database please acknowledge the paper 
[Hanton-ICVS2003] which contains description of the database and 
classification system designed to recognize the numerals:

K. Hanton, V. Smutny, V. Franc, V. Hlavac: Alignment Of
Sewerage Inspection Videos for Their Easier Indexing. Proceedings of the 
Third International Conference on Vision Systems (ICVS2003). 
Springer-Verlag, Berlin, Germany, 2003.
 
Description:
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Contains images of numerals '0'..'9' and symbols 'm' and '.' captured from 
video. Ground truth information is provided. The database may be used 
for training of character recognition and/or text detector systems.

List of files:
---------------
readme.txt              This document.
isaac_labeled.tar.gz    Labeled directories with BMP images.
isaac_unlabeled.tar.gz  Unlabeled BMP images.
isaac.mat               ISAAC numerals in Matlab data file.
isaac2mat.m             Matlab script which creates "isaac.mat".
Hanton-ICVS2003.pdf     The original paper to acknowledge.


The Malab file "isaac.mat" contains the following fields:
 X [dim x num_data] Images represented as column vectors; 
    dim=100 as the image size is 10x10; num_data = 5007.
 y [1 x num_data] Labels. 
    y = 1..9  corresponds to numerals '1'...'9'
    y = 10    corresponds to numeral '0'
    y = 11    corresponds to symbol 'm'
    y = 12    corresponds to symbol '.'