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[rew <679015@xxxxxxxxxxxxxxxxxx>]

So... apparenly the user managed to create a project where no input
files would end up being blended. So enblend gives a verbose error
message where a "nothing to do" would have been preferred.

The current (nov 2010) version disables the "stitch now" button in this
case as far as I can see. -> fix released.

** Changed in: hugin
       Status: New => Fix Released

-- 
enblend error when no input photos appear in ROI
https://bugs.launchpad.net/bugs/679015
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Status in Hugin - Panorama Tools GUI: Fix Released

Bug description:
After the installation on opensuse 11, trying to create a panorama I received this message as bug:
enblend --compression d -w -f23043580x11520163 -o prova.tif   
Usage: enblend [options] -o OUTPUT INPUT... 
Blend INPUT images into a single OUTPUT image. 
 
Common options: 
  -V, --version          Output version information and exit 
  -a                     Pre-assemble non-overlapping images 
  -h, --help             Print this help message and exit 
  -l LEVELS              Number of blending levels to use (1 to 29) 
  -o FILENAME            Write output to FILENAME 
  -v, --verbose          Verbosely report progress; repeat to 
                            increase verbosity 
  -w                     Blend across -180/+180 degrees boundary 
  -x                     Checkpoint partial results 
  -z                     Use LZW compression (TIFF only). 
                           Kept for backward compatability with older scripts 
  --compression=COMP     Set compression of output image to COMP, 
                           where COMP is: 
                             NONE, PACKBITS, LZW, DEFLATE (for TIFF files) 
                             0-100 (for JPEG files) 
 
Extended options: 
  -b BLOCKSIZE           Image cache BLOCKSIZE in Kilobytes.  Default: 2048KB 
  -c                     Use CIECAM02 to blend colors 
  -g                     Associated-alpha hack for Gimp (before version 2) 
                           and Cinepaint 
  -f WIDTHxHEIGHT[+xXOFFSET+yYOFFSET] 
                         Manually set the size and position of the output 
                           image.  Useful for cropped and shifted input 
                           TIFF images, such as those produced by Nona. 
  -m CACHESIZE           Images CACHESIZE in Megabytes.  Default: 1024MB 
  --visualize=FILENAME   Save results of optimizer FILENAME 
 
Mask generation options: 
  --coarse-mask          Use an approximation to speedup mask generation.  Default 
  --fine-mask            Enable detailed mask generation.  Slow!  Use if 
                           overlap regions are very narrow. 
  --optimize             Turn on mask optimization.  This is the default. 
  --no-optimize          Turn off mask optimization. 
  --save-mask=FILENAME   Save the generated mask to FILENAME. 
  --load-mask=FILENAME   Use the mask in FILENAME instead of generating one. 
 
enblend: no input files specified. 
make: *** [prova.tif] Error 1