I do the tiling of texture edges perfectly in photoshop with the offset command, but even the slightest tonal variations sometimes makes it a tiling disaster.
I couldn’t embed the image but link to its thumbnail is below. Hope you can see it.
http://s3.amazonaws.com/s3.cgsociety.org/forums/25/197125/t_300_iQGPmWY9QQumdPgXZLGz.jpg
Do you know any command that equalizes the dark and light areas while preventing the loss of color and taste of the image itself?