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 Question of cropping Automatically.		  New Topic  Reply to Topic
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jocker94

Korea
1 Posts
Posted - Aug 23 2016 :  00:33:21  Show Profile  Reply
Hi, Everyone,

I need to crop some image in Automatically.

The red rectangle is the target.

the red rectangle will large or small as the Yellow rectangle's size.

Attached is the sample.

Is possible with your Imageprocess component in Delphi XE2 ?

And how it can be invoke the code?

Regard.

xequte

38613 Posts
Posted - Aug 23 2016 :  19:51:49  Show Profile  Reply
Hi

There are autocropping methods in ImageEn:

http://www.imageen.com/help/TImageEnProc.AutoCrop.html

But they assume a background of fairly consistent color.


In your situation you are probably going to need to iterate throught the scanlines of your image to find the first top, first left, last bottom and last right red pixels.

Then pass these values to TImageEnProc.Crop():

http://www.imageen.com/help/TImageEnProc.Crop.html

Nigel
Xequte Software
www.xequte.com
nigel@xequte.com
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