Local contrast enhancement increases the appearance of light-dark transitions in your source media.

This effect was designed to give you similar functionality to what is available in image retouching programs such as Adobe® Photoshop®.

http://fxfactory.com/misc/FxFactoryHelp/pluginguide/colorcorrection/localcontrast/index.html

FxFactory is a revolutionary visual effects architecture powering hundreds of plug-ins for Final Cut Pro, Motion, Final Cut Express and Adobe After Effects:

http://fxfactory.com/fxfactory/