NAME

       pfssize - Resize frames

SYNOPSIS

       pfssize  [--x  <new_width>]  [--y  <new_height>]  [--ratio  <scale_ratio>]  [--maxx  <max_width>] [--maxy
       <max_heigh>] [--minx <max_width>] [--miny <max_heigh>] [--filter <filter-name>]

DESCRIPTION

       Resize all frames and all channels in the stream. Note that resampling is done on each channel as it is -
       for color images resampling is usually done in linear (not gamma corrected) XYZ color space.

OPTIONS

       --x <new_width>, -x <new_width>

              New x resolution in pixels.

       --y <new_height>, -y <new_height>

              New y resolution in pixels.

       --ratio <scale_ratio>, -r <scale_ratio>

              Resize both width and height using the given ratio. Ratio equal 1 is the original size, lower than
              1 makes the frames smaller and greater than 1, enlarges the frames.

       --minx <max_width>, --miny <max_heigh>

              Make sure that the resulting image has at least  <min_width>  width  and/or  <min_height>  height.
              Cannot be used in combination with -x, -y and --ratio.

       --maxx <max_width>, --maxy <max_heigh>

              Make  sure  that  the  resulting  image  has at most <max_width> width and/or <max_height> height.
              Cannot be used in combination with -x, -y and --ratio.

       --filter <filter-name>, -f <filter-name>

              Use filter <filter-name> for upsampling (on downsampling, box filter is  always  used).  Available
              filters:

              BOX Box filter. This is the fastest and the filter, but it also causes visible aliasing artifacts.

              LINEAR (default) Bi-linear filter.

              MITCHELL  Mitchell  filter.  From  Mitchell  and  Netravali,  Reconstruction  Filters  in Computer
              Graphics,In Computer Graphics, vol. 22 (4) 1988. Since the filter contains negative parts, it  may
              cause halo artifacts and it may result in negative values for HDR images.

EXAMPLES

       pfsin memorial.hdr | pfssize -r 0.25 | pfsout memorial_small.hdr

              Lower the resolution of memorial.hdr four times.

SEE ALSO

       pfsin(1) pfsout(1)

BUGS

       Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-sb.mpg.de>.

                                                                                                      pfssize(1)