How to Convert 2-D array into Image in c#

Question

I have a 2D array of integers in c#.

Each entry in the 2-D array correspond to a pixel value

How can i make this 2-D array into an image file (in C#)

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Answer 1

If you have the need for speed look at my Kinect sample. Basically it creates a memory area and uses an unsafe pointer to generate an Int32 array towards the memory. A BitmapSource object is used to map a bitmap (image) directly onto the same area. This particular example also uses unmanaged memory to make it compatible with P/Invoke.

This blogpost describes the difference in performance of using unsafe. Part from that have a look at:

• http://www.bytemycode.com/snippets/snippet/412/
• http://www.jmsoftware.co.uk/blog/c-snippet-for-accessing-bitmap-data-with-unsafe-code
• http://www.vcskicks.com/fast-image-processing.php

Note that you can just as well make a Int32[]-pointer instead of the examples which uses Byte[]-pointer.