Text Detection & extraction in video

Hello I had detected text in video using sobel filter & I had search the connected component now I want to generate the rectangular region arrount the text so that I can extract text using matlab plz tell me how to generate rectangular region arround text. Thanking u.

[msp]

Can u please share the source code for extraction in video please help me out.

[Rohit Kumar]

ma,am can you please give me the source code of video text extraction..

[songhyeon Jeon]

Can you please give me the source code..? please help me..

[Image Analyst]

Did any of you four see the link I gave below?

Answer 1

[Image Analyst]

Rohit, see this link:

Automatically Detect and Recognize Text in Natural Images http://www.mathworks.com/help/vision/examples/automatically-detect-and-recognize-text-in-natural-images.html?prodcode=VP&language=en

Answer 2

[Image Analyst]

Not quite sure how to answer. Just detect the top and bottom rows, and the left and right columns of where your Sobel filter determines there to be text, and that is your rectangle.

If you want to crop the original grayscale image and save the cropped portion out into its own separate image you can do this:

subImage = fullSizedImage(topRow:bottomRow, leftColumn:rightColumn);

If you want, you can use plot() or rectangle() to display a colored box over the original image in the graphics overlay.

plot([leftColumn rightColumn rightColumn leftColumn leftColumn],...
  [topRow topRow bottomRow bottomRow topRow], 'b-');

If you need something different, then say what you need in more explicit terms.

[Image Analyst]

See my Image Segmentation Tutorial. The code is in there. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862