Am 27.09.2011 15:16, schrieb Calvin McDonald:
Can someone tell me why in general someone would want their pano downscaled by Hugin? In other words, is there a good reason to set this to something besides 100%?
Yes. The 70% rule was introduced by Ken Turkowski, QTVR pioneer at Apple. He found out that you can downscale a Bayer interpolated image (as most digital camera images are) to 70% without loosing relevant image information. You can try it: Downscale an image to 70%, then upscale again to original size. Compare with the original.
This might or might not hold true, depending on image content. While color information is indeed upscaled during Bayer interpolation, brightness information could be taken from any sensor pixel. Hence one could assume that a more or less black and white image with high contrast might suffer more from downscaling than a low contrast but very colored one.
-- Erik Krause http://www.erik-krause.de -- 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
