pto_var: change image variables inside Hugin .pto project files


pto_var [options] −−opt|−−link|−−unlink|−−set "image variables list input.pto


pto_var is a command line tool, suitable for inclusion in shell scripts, and allows the change of image variables inside a Hugin .pto project file. Optimisation variables can be set, altered, linked and unlinked, The following image variables are allowed:

  position: y, p, r, TrX, TrY, TrZ
  lens parameters: v, a, b, c, d, e, g, t
    photometric parameters: EeV, Er, Eb, Vb, Vc, Vd, Vx, Vy, Ra, Rb, Rc, Rd, Re (Vignetting and response parameter will treated as group.)

The image numbers start with zero. If the number is missing this applies to the variables of all images (In this case a special treatment applies to the position of the anchor image). An exclamation mark before the variable will remove the variable from the list of variables to optimised.


−o|−−output = file.pto

Output Hugin PTO file. Default: <filename>_var.pto


Shows help

−−opt varlist

 Change optimizer variables


   Modify the existing optimizer variables
      (without pto_var will start with an
    empty variables set)
   −−opt y,p,r           Optimize yaw, pitch and roll of all images
                                                  (special treatment for anchor image applies)
   −−opt v0,b2           Optimize hfov of image 0 and barrel distortion
                         of image 2
   −−opt v,!v0           Optimize field of view for all images except
                         for the first image
   −−modify−opt −−opt !v will not optimize field of view.
      −−opt !a,!b,!c               Don't optimise distortion (works only with
                         switch −−modify−opt together)

−−link varlist

   −−link v3          Link hfov of image 3
   −−link a1,b1,c1    Link distortions parameter for image 1

−−unlink varlist

   −−unlink v5        Unlink hfov for image 5
   −−unlink a2,b2,c2  Unlink distortions parameters for image 2

−−set varlist

   −−set y0=0,r0=0,p0=0  Resets position of image 0
   −−set Vx4=−10,Vy4=10  Sets vignetting offset for image 4
   −−set v=20            Sets the field of view to 20 for all images
   −−set y=val+20        Increase yaw by 20 deg for all images
   −−set v=val*1.1       Increase fov by 10 % for all images
   −−set y=i*20          Set yaw to 0, 20, 40, ...

−−set−from−file filename

                         Sets variables to new values
                         It reads the varlist from a file


Thomas Modes


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