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Panotools::Script::Line::Image.3pm

NAME

Panotools::Script::Line::Image - Panotools input image

SYNOPSIS

A single input image is described by an 'i' line

DESCRIPTION

Basically the same format as an 'o' line.

   w1000
   h500     nona requires the width and height of input images wheras PTStitcher/mender don't
 
   f0           projection format,
                    0 - rectilinear (normal lenses)
                    1 - Panoramic (Scanning cameras like Noblex)
                    2 - Circular fisheye
                    3 - full-frame fisheye
                    4 - PSphere, equirectangular
                    7 - Mirror (a spherical mirror)
                    8 - Orthographic fisheye
                   10 - Stereographic fisheye
                   21 - Equisolid fisheye
 
   v82          horizontal field of view of image (required)
   y0           yaw angle (required)
   p43          pitch angle (required)
   r0           roll angle (required)
   a,b,c        lens correction coefficients (optional)
                    (see http://www.fh-furtwangen.de/~dersch/barrel/barrel.html)
   d,e          initial lens offset in pixels(defaults d0 e0, optional).
                    Used to correct for offset from center of image
                    d - horizontal offset,
                    e - vertical offset
   g,t          initial lens shear.  Use to remove slight misalignment
                    of the line scanner relative to the film transport
                    g - horizontal shear
                    t - vertical shear
   j            stack number
 
   Eev          exposure of image in EV (exposure values)
   Er           white balance factor for red channel
   Eb           white balance factor for blue channel
 
   Ra           EMoR response model from the Computer Vision Lab at Columbia University
   Rb           This models the camera response curve
   Rc
   Rd
   Re
 
   TiX,TiY,TiZ  Tilt on x axis, y axis, z axis
   TiS           Scaling of field of view in the tilt transformation
 
   TrX,TrY,TrZ  Translation on x axis, y axis, z axis
 
   Te0,Te1,Te2,Te3  Test parameters
 
   Vm           vignetting correction mode (default 0):
                    0: no vignetting correction
                    1: radial vignetting correction (see j,k,l,o options)
                    2: flatfield vignetting correction (see p option)
                    4: proportional correction: i_new = i / corr.
                         This mode is recommended for use with linear data.
                         If the input data is gamma corrected, try adding g2.2
                         to the m line.
 
                        default is additive correction: i_new = i + corr
 
                      Both radial and flatfield correction can be combined with the
                       proportional correction by adding 4.
                   Examples: i1 - radial polynomial correction by addition.
                                   The coefficients j,k,l,o must be specified.
                             i5 - radial polynomial correction by division.
                                   The coefficients j,k,l,o must be specified.
                             i6 - flatfield correction by division.
                                   The flatfield image should be specified with the p option
 
   Va,Vb,Vc,Vd  vignetting correction coefficients. (defaults: 0,0,0,0)
                 ( 0, 2, 4, 6 order polynomial coefficients):
                  corr = ( i + j*r^2 + k*r^4 + l*r^6), where r is the distance from the image center
                The corrected pixel value is calculated with: i_new = i_old + corr
                if additive correction is used (default)
                            for proportional correction (h5): i_new = i_old / corr;
 
   Vx,Vy        radial vignetting correction offset in pixels (defaults q0 w0, optional).
                   Used to correct for offset from center of image
                    Vx - horizontal offset
                    Vy - vertical offset
 
   S100,600,100,800   Selection(l,r,t,b), Only pixels inside the rectangle will be used for conversion.
                         Original image size is used for all image parameters
                         (e.g. field-of-view) refer to the original image.
                         Selection can be outside image dimension.
                         The selection will be circular for circular fisheye images, and
                         rectangular for all other projection formats
 
   nName        file name of the input image.
 
   i f2 r0   p0    y0     v183    a0 b-0.1 c0  S100,600,100,800 n"photo1.jpg"
   i f2 r0   p0    y180   v183    a0 b-0.1 c0  S100,600,100,800 n"photo1.jpg"
 
 

Rotate transform the image, angles in degrees:

   $i->Transform ($roll, $pitch, $yaw);
 
 

Each image attribute (v, a, b, c etc...) can be read like so:

  $fov = $i->v;
 
 

Note that this will return either the value (56.7) or a reference to another image (=0). If you supply a Panotools::Script object as a parameter then the reference will be resolved and you will always get the value:

  $fov = $i->v ($pto);
 
 

Get the absolute path to the image file

$i->Path ('/path/to/project.pto');

If a .pto project isn't specified then paths are assumed to be relatve to cwd

For any given coordinate in this image (top left is 0,0), calculate an x,y,z cartesian coordinate, accounting for lens distortion, projection and rotation.