5.0 | 1 rating Rate this file 164 downloads (last 30 days) File Size: 200.65 KB File ID: #24624

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
Add New Tags	Please login to tag files.

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

Please login to add a comment or rating.

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

MATLAB Central Terms of Use

NOTICE: Any content you submit to MATLAB Central, including personal information, is not subject to the protections which may be afforded information collected under other sections of The MathWorks, Inc. Web site. You are entirely responsible for all content that you upload, post, e-mail, transmit or otherwise make available via MATLAB Central. The MathWorks does not control the content posted by visitors to MATLAB Central and, does not guarantee the accuracy, integrity, or quality of such content. Under no circumstances will The MathWorks be liable in any way for any content not authored by The MathWorks, or any loss or damage of any kind incurred as a result of the use of any content posted, e-mailed, transmitted or otherwise made available via MATLAB Central. Read the complete Terms prior to use.