I had a look at the used seams, with and without optimization. Obviously there is something wrong with the optimization.
The two seams I obtained are attached, the photos are the same but in a higher resolution. Using the same resolution as before reveals the same problem but it's a bit harder to see. The options were '--fine-mask --optimize --save-masks' and '--fine-mask --no-optimize --save-masks'. ** Attachment added: "seams.tgz" https://bugs.launchpad.net/enblend/+bug/1153546/+attachment/3569781/+files/seams.tgz -- You received this bug notification because you are a member of Hugin Developers, which is subscribed to Enblend. https://bugs.launchpad.net/bugs/1153546 Title: black artifacts after blending Status in Enblend: New Bug description: I'm frequently getting black artifacts on some blended photos (none or one in small projects, easily 5 to 10 artifacts in projects of more than 100 photos). The occurrence of artifacts does not depend on the output resolution. The shape, however, is dependent on the resolution. Appended are three photos. On my machine blending yields the following output: $ enblend -v -o foo.tif img_7306-73170000.tif img_7306-73170010.tif img_7306-73170011.tif --fine-mask enblend: info: loading next image: img_7306-73170000.tif 1/1 enblend: info: loading next image: img_7306-73170010.tif 1/1 enblend: images do not overlap - they will be combined without blending enblend: use the "-l" flag to force blending with a certain number of levels enblend: info: loading next image: img_7306-73170011.tif 1/1 enblend: info: creating fine blend mask: 1/3 2/3 3/3 enblend: info: optimizing 2 distinct seams enblend: info: Annealing Optimizer, s0: 1/4 2/4 3/4 4/4 enblend: info: Annealing Optimizer, s1: 1/4 2/4 3/4 4/4 enblend: info: Dijkstra Optimizer: s0 s1 enblend: info: using 5 blending level(s) enblend: info: generating Gaussian pyramid: g0 g1 g2 g3 g4 enblend: info: generating Gaussian pyramid: g0 g1 g2 g3 g4 enblend: info: generating Laplacian pyramid: l0 l1 l2 l3 l4 enblend: info: generating Gaussian pyramid: g0 g1 g2 g3 g4 enblend: info: generating Laplacian pyramid: l0 l1 l2 l3 l4 enblend: info: blending layers: l0 l1 l2 l3 l4 enblend: info: collapsing Laplacian pyramid: l4 l3 l2 l1 l0 enblend: info: writing final output The version is $ enblend -V enblend 4.1-700e60bc31b5 Copyright (C) 2004-2012 Andrew Mihal. License GPLv2+: GNU GPL version 2 or later <http://www.gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by Andrew Mihal and others. Please tell me if any additional output would be helpful. cheers, lukas To manage notifications about this bug go to: https://bugs.launchpad.net/enblend/+bug/1153546/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~hugin-devs Post to : hugin-devs@lists.launchpad.net Unsubscribe : https://launchpad.net/~hugin-devs More help : https://help.launchpad.net/ListHelp