FEATURE EXTRACTION FOR CHARACTER RECOGNITION

EXTRACTS FEATURE VECTORS FROM SINGLE CHARACTER IMAGES

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.

A set of sample images I used for feature extraction has been given here

http://www.mathworks.com/matlabcentral/fileexchange/26158-hand-drawn-sample-images-of-english-characters

• Acknowledgements: This submission has inspired the following:; HAND-DRAWN SAMPLE IMAGES OF ENGLISH CHARACTERS
• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 7.0.1 (R14SP1)

[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 ?

[charu]

 

[Ann]

 

[Kalyani Bhosale]

Thanks for useful posts.
but can u tell me, after extracting the features when u train the neural n/w how will u set ur 'P' n 'T' parameters? whether the o/p after training is in tabular form or it displays the recognised character?

[harsh modi]

Thanks Dinesh
can you send the code for using this features for reconition of the characters from a form or handwritten document .or can u please provide any help for how to recognize characters. its really urgent coz we hv to submit our project within three weeks
my email id is [e-mail]

[Abdul Haleem Butt]

i need some guidness
i want to extarct feactures for character recognation but finally i need values in the form of integer values for classfi´cation because of the tool requirment which i am going to use.....
if any one have suggesion please guide me......

[li ping]

thanks

[RAVI KIRTIVADAN]

hello dinesh this code is working nicely. but how to used these features to train neural network please give me your valuable guidelines.contact me on [e-mail]