There will always be a difference between the original image and the stitched image owing to the interpolation process that has been used to remap the image to and from the spherical stitching surface. There are several interpolators to choose from and there can be quite big differences between them, depending on the nature of the image. It would be worth trying some of the alternatives. Needless to say, the dpi/ppi has no effect whatever on the image quality. It merely determines the default linear size of the image when printed, but this can in any case be overridden by most print programs and so is of no consequence.
John On Tuesday, May 13, 2014 5:57:53 AM UTC+1, [email protected] wrote: > > I scanned an A2 sized electrical schematic with an A4 scanner in 12 > pieces, and tried out Hugin to stitch them together. The result is very > promising but there is one problem - the DPI has been changed from 300dpi > to 150dpi resulting in a smaller image and some loss of quality. > > Of course I have read http://hugin.sourceforge.net/docs/manual/PPI.htmlbut > before anyone starts telling me how this does not affect image quality > etc please view the attached files and see for yourself how the quality has > been degraded. > > I did try changing the DPI setting of the file back to 300dpi using Gimp > but this made no difference. > > How can I tell Hugin (or its processor program) NOT to change the > resolution down to 150dpi and rather keep it at 300dpi? > -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/4b903a0d-8a5f-45b3-aee0-380c77335c90%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
