Control Image Sharpness and Zoom using asp.net

If you want to control your image's details (brightness, sharpness, contrast, etc.) at the server side code, the following article describes how you can do this using .NET C# classes:
http://www.codeproject.com/Articles/33838/Image-Processing-using-C

Also, during searching internet, I found the following interesting image processing online app:
http://demo.leadtools.com/JavaScript/ImageProcessing/