tca_correct − Calculate transverse chromatic aberration
tca_correct [options] inputfile
is the base name of 4 image files:
Colour file to compute TCA parameters
Red channel of <inputfile>
Green channel of <inputfile>
Blue channel of <inputfile>
The channel images must be colour images with 3 identical channels. If any of −R, −G, or −B is given, this file name is used instead of the derived name.
Output: commandline arguments for fulla
Generates fulla command-line parameters for correction of transverse chromatic aberration ( TCA ) from sample photos. Ideal sample photos would have a lot of contrast over the entire image area, little saturated colour and no blown highlights.
input file is PTO file instead of image
optimization method (0 normal, 1 newfit)
string of variables to optimize ("abcvde")
Reset values (this will zero a,b,c,d,e params and set v to 10) makes sense only with −l option
Scale for corner detection
number of points per grid cell (default: 10)
divide image in <number>x<number> grid cells (default: 10)
Remove all control points with an error higher than num pixels (default: 1.5)
write PTO file
Use this file as red channel
Use this file as green channel
Use this file as blue channel
Written by Pablo d’Angelo and others.
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