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       vig_optimize - Optimise photometric parameters

       vig_optimize [options] -o output.pto input.pto

       Photometric calculation can be performed	on the command-line with the
       vig_optimize tool. This functionally is configured via 'v' variable
       lines in	the .pto project file in a similar way to the autooptimiser

       The camera response curve is simplified using the EMoR sensor model
       which reduces the variation to five numbers, these are the Ra, Rb, Rc,
       Rd & Re image (i) parameters (the default values	of 0.0 are equivalent
       to an 'average' generic sensor).

       The vignetting model is represented by a	polynomial with	four
       parameters: Va (this is always 1.0 and doesn't need to be optimised)
       and Vb, Vc & Vd (which default to 0.0 - equivalent to no	vignetting).
       The vignetting centre can also be different from	the geometrical
       centre, this is specified by Vx & Vy (both default to 0.0).

       Exposure	(EV) is	represented by a single	value Ev (defaults 0.0,
       equivalent to no-change).

       The white balance is represented	by multipliers for the red and blue
       channels	Er and Eb (the defaults	of 1.0 are equivalent to no-change).

       A typical 'v' variable line configuration would look like this, i.e.
       optimise	camera response	curve and vignetting for image 0 and exposure
       for images 1, 2,	3 and 4:

	 v Ra0 Rb0 Rc0 Rd0 Re0 Vb0 Vc0 Vd0
	 v Ev1 Ev2 Ev3 Ev4

       (vignetting centre and white balance are	left unchanged)

       General options:

       -o file
	   Write results to output project

       -v  Verbose, print progress messages

       -p n
	   Number of points to extract

       -r  Extract random point	(faster, but less accurate)

       -s level
	   Work	on downscaled images, every step halves	width and height

       -h  Display help	summary.

       Expert and debugging options:

       -i file
	   Read	corresponding points from file

       -w file
	   Dump	corresponding points to	file

       Written by Pablo	d'Angelo. Also contains	contributions from Douglas
       Wilkins,	Ippei Ukai, Ed Halley, Bruno Postle, Gerry Patterson and Brent

       This man	page was written by Cyril Brulebois
       <> and is licensed under	the same terms
       as the hugin package itself.

"Version: 2019.2.0"		  2011-07-17		       VIG_OPTIMIZE(1)


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