I've been playing around with a script to auto adjust the luminance of an image, to bring it back to mid-luminance... a sort of auto exposure compensation. The script is for Paint Shop Pro 9, but can be adjusted for different versions.
The script first measures a sample of the image and determines its Luminance value. It then applies an adjustment layer and alters the
brightness to bring the luminance back to a value of 128. So a mid grey should always be brought back to RGB 128,128,128.
It then goes on to run Auto Colour Balance, to correct any colour cast.
I've attached an image with a couple of examples, and the beta script for you to try. I would appreciate any comments and feedback, to see if this will be a useful photo correction tool.
Many thanks.
Rgds,
Howard Dickson 25 January 2006
