David - attachments get stripped from forum messages. You may want to put them on the J wiki instead.
Regards, Devon On Fri, Dec 19, 2008 at 9:07 PM, David Vincent-Jones < [email protected]> wrote: > Raul; > > (sorry for delayed answer ... had an address issue) > > Equalization evenly spreads the image luminescence over the luminescence > range. (Not the same as just evenly placing the pixels in the range). > The effect is to allow details ,usually in the darker areas, to emerge > from the image. Local equalization works its magic within a frame/box > which is then moved over the entire image. The effect is to further > enhance detail in all segments of the image. > > When the 'frame' is small the effect is extreme but as the frame is > enlarged the effect can be very useful in photography without becoming > 'too obvious'. > > To give an idea of the application I have attached a small pair of test > files (heavily compressed). Notice that not only is detail pulled out of > the dark areas but > that also the high luminance areas are able to pick up added detail. The > frame in this test is still small (100 x 100) 10% of the image so the > effect is rather extreme. > > David > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
