How to detect the tick mark & the letter separately and print as text using matlab from the following image?

Answer 1

[Image Analyst]

I suggest you build a library of all letters a-z with and without checkmarks, and an image of the checkmark alone. Then subtract the test image from each of your library images and find out which one has the least number of differences.

To print the images you have determined from what I just said, you can use the fprintf() function.

[Farzana Yasmin]

How am i to build the library of images & how can I subtract the test image?If you could provide a code for example that would be helpful.

[Image Analyst]

I don't have any code for that. You already have one image for your library - the "a" with a check. Just do whatever you did for that for all the other letters. To subtract, you can use the minus operator "-" but be sure to cast to double before you subtract otherwise negative numbers will get clipped to zero.

[Farzana Yasmin]

I have used the following code & the output images are also given here. I'm unable to understand how can the detection be done & printed in text here?

clc
clear all
close all
I=imread('E:\Study\4-2\Project\A1p.jpg');
I=imresize(I,[100 100]);
figure
imshow(I), title('I');
J=imread('E:\Study\4-2\Project\Coding\OCR\library\bwidtick.jpg');
J=imresize(J,[100 100]);
figure
imshow(J), title('J');
z=I-J;
disp(z);
figure
imshow(z), title('z');

[Image Analyst]

See the FAQ to read in all your library images and subtract them from your extracted, test letter-parentheses-checkmark image. http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F