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pfsoutimgmagick(1)     DragonFly General Commands Manual    pfsoutimgmagick(1)

NAME
       pfsoutimgmagick - Write images or frames using Image Magick library

SYNOPSIS
       pfsoutimgmagick [--linear] [--quality <val>] [--bit-depth] [--frames
       <range>]) <file> [<file>...]

DESCRIPTION
       This command can write images or frames in the multitude of image
       formats supported by the ImageMagick library. This includes but is not
       limited to: BMP, JPG, PNG, GIF, EPS, TIFF, DPX. See the manual page of
       ImageMagick for the full list of available formats.

       pfsoutimgmagick reads images or frames in pfs format from the Standard
       Input and writes them under the specified file name(s).

       The input of pfsinimgmagick must be within 0-1 range. If LUMINANCE tag
       set is set to RELATIVE or ABSOLUTE, the linear values will be gamma
       corrected, assuming sRGB color space. Use --linear switch to disable
       gamma correction.

       The images are stored using the bit-depth for which the ImageMagick
       library was compiled (default is 16 bit). Note that some formats (for
       example JPEG) do not support encoding more than 8 bits per color
       channel. To use higher bit-depths, store images in the PNG format.

       This command stores 'ALPHA' channel if it is present in the pfs stream.

       Each file name can contain a %d pattern, which is substituted with
       frame numbers. The pattern has the same syntax as C printf command. For
       example, you can use %04d to make the frame number four digit with
       proceedings zeros. You can select the frames using the following
       options (the options must be always given after the file name):

       --frames <range>
              Range is given in mathlab / octave format:

              startframe:step:endframe

              Frame numbers start with startframe (default 0), are increased
              by step (default 1) and stop at endframe You can skip one of
              those values, for example 1:100 for frames 1,2,...,100 and 0:2:
              for frame 0,2,4,... up to the last file that exists.

       --srgb, -s
              Apply the sRGB non-linearity (approximately 2.2 gamma) before
              writing a file. This can be used instead of using pfsgamma -g
              2.2 to store the result of some tone-mapping operators. The
              option will compress contrast to make sure that tone values are
              properly shown on a display. It should be only used with
              linearized (not gamma corrected) images that are normalized to
              the 0-1 range.

       --quality <val>, -q <val>
              Set JPEG/PNG compression level from 1 to 100. Default 75.

       --bit-depth <val>, -b <val>
              Enforce bit-depth (per color channel). The allowed values are
              from 8 to 32. If not specified, the bit depth from the pfs
              stream ('BITDEPTH' tag) will be used instead. If the 'BITDEPTH'
              tag is missing, the ImageMagick default value will be used
              (usually 16). The bit depth of actually stored file may be lower
              of that specified, if the file format does not support higher
              bit depths.

EXAMPLES
        pfsin test.jpg | pfsout test.png
              Convert from one image format to another.

        pfsin --linear test.jpg | pfsout --srgb test.png
              The same as above, but apply inverse gamma correction after
              reading an image (--linear) and then apply gamma correction
              before writing an image (--srgb).

BUGS
       pfsoutimgmagick can not write frames to the standard output.

       Please report bugs and comments on implementation to the discussion
       group http://groups.google.com/group/pfstools

SEE ALSO
       pfsout(1) ImageMagick(1)

                                                            pfsoutimgmagick(1)