How can i crop image using C#

Question

Hi All,

I have a picture of document taken from camera. Now what i have to do is crop only document from that image . Please can anyone suggest me how best it can be done or first is it possible or not

Edit

For more information .. my next question http://stackoverflow.com/questions/1890422/how-to-get-edge-coordinates-of-a-image

Answer 1

If you know the area that contains the image data you would like to crop, you could use this article from MSDN:
http://msdn.microsoft.com/en-us/library/ms752345.aspx

If you need to find the relevant area before cropping, you need to investigate some image processing techniques. e.g. Corner Detection

Answer 2

Two links for you

http://google.com/search?q=c%23+crop+bitmap and http://www.nerdydork.com/crop-an-image-bitmap-in-c-or-vbnet.html

Answer 3

In the assumption you are performing preprocessing for OCR, I would look into using the Aforge Framework if possible.

There is a specific set of functions in the Imaging classes for preforming crops and any other related manipulations(image rotation, hue adjustment, brightness/contrast adjustment, filter noise, etc) that you might need.