> BTW: Probably this is true for every image size of any camera, but > isn't a lossless jepg rotation only possible for images with sizes > that can be writen as 2^n or multiples? (So a 2x3 pixel images cannot > be rotated lossless.)
JPEG operates on 8x8 pixel blocks, so if the resolution is a multiple of 8, it's easy. "If the image is not an exact multiple of 8 pixels in width or height, it is temporarily padded out to that size" (quoted from "The image processing handbook" by John C. Russ, page 118), but I don't know what happens when you try to rotate that. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hugin-ptx -~----------~----~----~----~------~----~------~--~---
