Mark Roberts <[email protected]> wrote: > Is it, in fact, HDR? Does "ImageFuser" do HDR or does it merely work > by blending layer transparency the way you can do yourself manually in > Photoshop?
It is indeed a blending technique. ImageFuser itself is a mere graphical front-end: "ImageFuser is a MacOSX program that fuses multiple exposures of one scene into an image with greater detail and well balanced exposure by using the well exposed areas of the original multi-exposure images. ImageFuser is a graphical frontend for the open source command line tools Enfuse and Align_Image_Stack. Next to these tools Phil Harvey's ExifTool is used to copy exif, jfif, tiff, iptc, gps, icc profile data etc. to the new images." The actual work is done by AlignImageStack, which is surprisingly good at precisely stacking hand-held shots and then by Enfuse which... "merges overlapping images using the Mertens-Kautz-Van Reeth exposure fusion algorithm. ... This is a quick way to blend differently exposed images into a nice output image, without producing intermediate HDR images that are then tonemapped to a viewable image. This simplified process often works much better than the currently known tonemapping algorithms." They're certainly right with this last sentence. More info on Enfuse and the algorithm it uses can be found here: http://enblend.sourceforge.net/ Ralf -- Ralf R. Radermacher - DL9KCG - Köln/Cologne, Germany Blog : http://the-real-fotoralf.blogspot.com Audio : http://aporee.org/maps/projects/fotoralf Web : http://www.fotoralf.de -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
