Difference between revisions of "Align image stack"
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− | align_image_stack is a command-line tool available in the development version of [[hugin]] to align overlapping images to facilitate [[HDR]] creation, [[Exposure blending]] | + | align_image_stack is a command-line tool available in the development version of [[hugin]] to align overlapping images to facilitate [[HDR]] creation, [[Exposure blending]], extended [[Depth of Field]], and [[Stereoscopic]] images. |
== Usage == | == Usage == | ||
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-t num | -t num | ||
Remove all control points with an error higher than num pixels (default: 3) | Remove all control points with an error higher than num pixels (default: 3) | ||
+ | --corr=num | ||
+ | Correlation threshold for identifying control points (default: 0.9) | ||
-f HFOV | -f HFOV | ||
Approximate horizontal [[field of view]] of input images, use if [[EXIF]] info not complete | Approximate horizontal [[field of view]] of input images, use if [[EXIF]] info not complete | ||
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Optimize Z coordinate of the camera position. Useful for aligning more distorted images. | Optimize Z coordinate of the camera position. Useful for aligning more distorted images. | ||
-S | -S | ||
− | Assume stereo images - allow horizontal shift of control points. | + | Assume stereo images - allow horizontal shift of control points. Adds all control points as "horizontal lines". |
-A | -A | ||
− | Align stereo window - assumes -S. | + | Align stereo window - assumes -S. Adds one "normal" control point that is the nearest point so everything will appear behind the display plane. |
-P | -P | ||
− | Align stereo window with pop-out effect - assumes -S. | + | Align stereo window with pop-out effect - assumes -S. Adds one "normal" control point that is the nearest point from the border areas so the center of the image may appear in front of the display plane. |
-C | -C | ||
Auto crop the image to the area covered by all images. | Auto crop the image to the area covered by all images. | ||
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-g gsize | -g gsize | ||
Break image into a rectangular grid (gsize x gsize) and attempt to find num control points in each section (default: 5 [5x5 grid] ) | Break image into a rectangular grid (gsize x gsize) and attempt to find num control points in each section (default: 5 [5x5 grid] ) | ||
+ | --distortion | ||
+ | Try to load distortion information from lens database | ||
+ | --use-given-order | ||
+ | Use the image order as given from command line (By default images will be sorted by exposure values as found in EXIF data.) | ||
+ | --threads=NUM | ||
+ | Use NUM threads (by default it uses as much threads as cores) | ||
+ | --gpu | ||
+ | Use GPU for remapping | ||
-h | -h | ||
Display help. | Display help. |
Revision as of 09:18, 1 May 2014
align_image_stack is a command-line tool available in the development version of hugin to align overlapping images to facilitate HDR creation, Exposure blending, extended Depth of Field, and Stereoscopic images.
Usage
align_image_stack [options] input_files
Options: modes of operation
-p file
Output .pto file (useful for debugging, or further refinement)
-a prefix
Align images, output as prefix_xxxx.tif
-o output
Merge images to HDR, generate output.hdr
Options: modifiers
-v
Verbose, print progress messages
-e
Assume input images are full frame fish eye (default: rectilinear)
-t num
Remove all control points with an error higher than num pixels (default: 3)
--corr=num
Correlation threshold for identifying control points (default: 0.9)
-f HFOV
Approximate horizontal field of view of input images, use if EXIF info not complete
-m
Optimize field of view for all images, except for first. Useful for aligning focus stacks with slightly different magnification
-d
Optimize radial distortion for all images, except for first.
-i
Optimize image center shift for all images, except for first.
-x
Optimize X coordinate of the camera position.
-y
Optimize Y coordinate of the camera position.
-z
Optimize Z coordinate of the camera position. Useful for aligning more distorted images.
-S
Assume stereo images - allow horizontal shift of control points. Adds all control points as "horizontal lines".
-A
Align stereo window - assumes -S. Adds one "normal" control point that is the nearest point so everything will appear behind the display plane.
-P
Align stereo window with pop-out effect - assumes -S. Adds one "normal" control point that is the nearest point from the border areas so the center of the image may appear in front of the display plane.
-C
Auto crop the image to the area covered by all images.
-c num
Number of control points to create between adjacent images (default: 8)
-l
Assume linear input files
-s scale
Scale down image by 2^scale (default: 1 [2x downsampling]). Scaling down images will improve speed at the cost of accuracy.
-g gsize
Break image into a rectangular grid (gsize x gsize) and attempt to find num control points in each section (default: 5 [5x5 grid] )
--distortion
Try to load distortion information from lens database
--use-given-order
Use the image order as given from command line (By default images will be sorted by exposure values as found in EXIF data.)
--threads=NUM
Use NUM threads (by default it uses as much threads as cores)
--gpu
Use GPU for remapping
-h
Display help.