Extract sub image from an Image using c#

Question

I have a Bitmap object from this I need to extract a sub image and keep it as a Bitmap object by passing Rectangle object which contains sub image co-ordinates?

Is there a c# library which is able to do this or is Aforge able to extract sub image.

Thanks

http://stackoverflow.com/questions/734930/how-to-crop-an-image-using-c — Raab, Jul 12 '12 at 18:07

score 30 · Accepted Answer · answered Jul 12 '12 at 17:56

30

The Bitmap class has a Clone method which accepts a target rectangle directly.

Since you're already working with a Bitmap, calling Clone with your rectangle and desired PixelFormat (which could be originalBitmap.PixelFormat) should give you what you need, with no additional dependencies.

Bitmap croppedImage = originalBitmap.Clone(theRect, originalBitmap.PixelFormat);

answered Jul 12 '12 at 17:56

Reed Copsey

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how to do it not using a rectangle? I need a trapezoid shape copy – Kulpemovitz Mar 11 '18 at 22:17
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If PixelFormat is not indexed color, then Clone operation will throw an Out of Memory error. – SimonKravis Apr 24 '18 at 03:51

Extract sub image from an Image using c#

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