Hello, Perspective correcting one photo I find that the intensity histogram of the ouput TIFF file (hugin 0.7.0 on debian lenny) shows a castle wall structure in the lower intensity range, maybe 20-100 of the 0-255 range. On top of warping the image I changed the EV value from 13.97 to 13.75 in the pano preview window, setting it back to the original value makes the guelph merlons disappear.
These merlons are about 20 percent histogram height, about 50 percent aspect ratio, roughly 7 of them fit into 64 histogram bins, they seem to get slightly wider to the right and then peter out around 100-120. And no, they do not align with powers of two locations. Adjusting intensity I have seen comb-like histograms (or missing teeth). If the intensity correction applies before warping, I would have thought the warping washing out the comb to yield maybe a wavy structure. I have tried both Spline36 and Poly3 interpolation. Intensity correcting after warping should still give a comb. Hence I do not understand why this rectangular shape, and only appearing in the low intensity part of the histogram. Any idea how come? Cheers Klaus --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
