Text Detection & extraction in video
显示 更早的评论
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.
4 个评论
Rohit Kumar
2015-7-3
ma,am can you please give me the source code of video text extraction..
songhyeon Jeon
2018-12-28
Can you please give me the source code..? please help me..
Image Analyst
2018-12-28
Did any of you four see the link I gave below?
回答（2 个）
Image Analyst
2015-7-4
1 个投票
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
Image Analyst
2011-12-25
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.
1 个评论
Image Analyst
2013-2-20
See my Image Segmentation Tutorial. The code is in there. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
类别
在 帮助中心 和 File Exchange 中查找有关 Audio and Video Data 的更多信息
2018-12-28
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
