pointer and images

[captain]

hi,

i'm trying to program a 2D image noise reduction filter right now.

i heard the fastest way to access a bitmap's pixel is through pointer arithmetic.

so i'm wondering how i can use that to access and manipulate the RGB values of an image.

 

thanks

[Ming_Lei]

I know only access through Bitmap.GetPixel() and .SetPixel(). So I searched over the web for a different solution. And I have found the following article at C# corner to be interesting, and appear to use System.IntPtr and unsafe code:

 

http://www.c-sharpcorner.com/Code/2003/March/ThumbnailImages.asp