Interactively Setting the Window/Level of an Image

Interactively Setting the Window/Level of an Image
http://www.dfanning.com/ographics_tips/contrastzoom.html

Image Contrast and Brightness Adjustment
http://www.dfanning.com/ip_tips/contrast.html

Improved Image Contrast
http://www.dfanning.com/ip_tips/xstretch.html

Calculate windowing width and level from Image pixel data
http://www.medicalconnections.co.uk/wiki/Calculate_windowing_width_and_level_from_Image_pixel_data