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FEATURE EXTRACTION FOR CHARACTER RECOGNITION

02 Jul 2009 (Updated 03 Aug 2009)

EXTRACTS FEATURE VECTORS FROM SINGLE CHARACTER IMAGES

File Information
Description	The m-files inside this zip file extracts features of single characters based on their geometric properties. Two approaches are explained for extracting feature vectors. The final feature vector generated for my purpose had more 120 elements. The features are based on the basic geometric shapes that comprises a single character. It calculates how many basic line segments are there in the given character. Basic line segments like horizontal, vertical and diagonal are what looked for. Their length and area normalized to the entire image are used as features. The number of holes in a image is another feature. SImilar properties are used for feature extraction.
Required Products	Image Processing Toolbox
MATLAB release	MATLAB 7.0.1 (R14SP1)
Zip File Content
Other Files	feature_extraction/Algorithm.pdf, feature_extraction/del_pixel.m, feature_extraction/discourser.m, feature_extraction/feature_extractor.m, feature_extraction/feature_extractor_2d.m, feature_extraction/finddirection.m, feature_extraction/findneighbours.m, feature_extraction/ismymember.m, feature_extraction/isnotempty.m, feature_extraction/isnotintersection.m, feature_extraction/isnotmember.m, feature_extraction/letters_skel.mat, feature_extraction/lineclassifier.m, feature_extraction/linesegmenter.m, feature_extraction/prep_image.m, feature_extraction/README.pdf, feature_extraction/README.txt, feature_extraction/starter_intersection.m, license.txt

Tags for This File
Everyone's Tags	digital character recognition, english character, feature extraction(2), feature vector(2), geometric(2), optical character recognition, pattern recognition(2), self_rating
Tags I've Applied
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Comments and Ratings (2)
14 Nov 2009	khader Mohammad	Thanks Dinesh can you send the recognetion part where you use these features to recognize the character. does this work for all characters capital and small ? does it work for numbers ? what is the procedure of runing the code ?
17 Nov 2009	Dinesh Dileep Gaurav

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Updates
03 Aug 2009	README file in pdf format has been included

Tag Activity for this File
Tag	Applied By	Date/Time
feature extraction	Dinesh Dileep Gaurav	02 Jul 2009 14:23:18
geometric	Dinesh Dileep Gaurav	02 Jul 2009 14:23:18
digital character recognition	Dinesh Dileep Gaurav	02 Jul 2009 14:23:18
pattern recognition	Dinesh Dileep Gaurav	02 Jul 2009 14:23:18
optical character recognition	Dinesh Dileep Gaurav	02 Jul 2009 14:23:18
english character	Dinesh Dileep Gaurav	02 Jul 2009 14:23:18
feature vector	Dinesh Dileep Gaurav	02 Jul 2009 14:23:18
feature extraction	misbah khan	15 Nov 2009 14:08:25
feature vector	misbah khan	15 Nov 2009 14:08:37
geometric	misbah khan	15 Nov 2009 14:09:01
pattern recognition	misbah khan	15 Nov 2009 14:09:11
self_rating	Matt Fig	17 Nov 2009 16:35:55

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