capture screen and osr

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Ivan Shorokhov 2016-9-30

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https://ww2.mathworks.cn/matlabcentral/answers/305157-capture-screen-and-osr

编辑： Ivan Shorokhov 2016-9-30

Hello everyone,

Recently I have found the ScreenCapture function in the FileExchange http://uk.mathworks.com/matlabcentral/fileexchange/24323-screencapture-get-a-screen-capture-of-a-figure-frame-or-component

What I want is to capture certain rectangular area of screen from webbrowser and then using Optical Character Recognition (OCR) to recognize the text. http://uk.mathworks.com/help/vision/examples/recognize-text-using-optical-character-recognition-ocr.html

So what I have done so far:

I = screencapture(gca);
% Perform OCR
BW = im2bw(I); 
marker = imerode(BW , strel('line',500,0));
Iclean = imreconstruct(marker, BW );imshow(Iclean);
results = ocr(Iclean, 'TextLayout', 'Block');
results.Text

Where the input image was

And the output I got was quite impressive: 2.311.592 /

But the only problem I have is how to select specific region outside Matlab?

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Jan 2016-9-30

编辑：Jan 2016-9-30

How is the region specified? Are you looking for a window with a specific name? Is the window created at a specific position on the screen? We cannot guess this detail and Matlab cannot also.

Which operating system are you working with?

Why don't you download the image directly using webread? Is the indirection over the browser useful?

Ivan Shorokhov 2016-9-30

Hello Jan Simon,

Thank you very much for your quick response and help. I want to specify region with Rectangular Snip. So I can drag the cursor around any object to form a rectangle. OS: Windows I have tried to use webread, but it didn't work.

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