gif2stiff(1)

NAME
     gif2stiff - convert a Graphics Interchange Format (GIF) image file to
     Stream TIFF (STIFF)

SYNOPSIS
     gif2stiff [-O filename] [-L filename] [-G g0[,g1,g2]]
               [-h] [-D] GIFImageFilename ...

DESCRIPTION
     gif2stiff converts Graphical Interchange Format (GIF) image files into
     Stream TIFF (STIFF) format. In addition to conversion of GIF images,
     gif2stiff can perform image gamma correction.

     gif2stiff expects at least one GIF image file to be specified on the
     command line after all option switches. By default, gif2stiff assumes
     that its output should be written to the standard output and messages
     should be written to standard error.

     -O filename
               Specifies the name of the file to which the STIFF output will
               be sent.  If the -O option is not specified, output will be
               sent to the standard output.

     -L filename
               Specifies the name of the file to which error, warning and
               informational messages are to be written. If the file specified
               already exists, any messages generated by gif2stiff will be
               appended to the end of the file.  If the -L option is not
               specified, message output will be sent to standard error.

     -G g0[,g1,g2]
               This switch provides gamma correction of the image data. The
               gamma value (g0, etc.) is typically a value between 0.0 and
               3.0. A gamma value less than 1.0 will tend to lighten the image
               while a value greater than 1.0 will tend to darken the image. A
               gamma of 1.0 will leave the image data unchanged.  The gamma
               value may be specified for each color channel individually or
               as a group. If g0 is the only gamma value specified, this value
               will be applied to all channels. Note that GIF images contain
               three color channels, red, green and blue.  The default gamma
               value is 1.0 for all channels.

     -h        Prints a program usage message to the standard error. This
               usage message also lists the currently supported output
               configurations.

     -D        Specifies verbose output for debugging purposes.

NOTES
     1.   gif2stiff conforms to the 89a GIF specification.
     2.   All GIF extension blocks are read but ignored.

     3.   The Logical Screen Descriptor dimensions are read but ignored.
          Similarly, the image positioning information in the Image Descriptor
          are also ignored.

     4.   The GIF image must contain either a Global Color Table or a Local
          Color Table.

     5.   The Pixel Aspect ratio, if specified, is ignored.

     6.   If gif2stiff is given an unrecognized or incomplete command line
          option switch, it will print a warning message to the standard
          error, ignore the option and continue processing.

FILES
     /usr/lib/print/gif2stiff    Program file

TRADEMARKS
     The Graphics Interchange Format(C) is the Copyright property of
     CompuServe Incorporated. GIF(sm) is a Service Mark property of CompuServe
     Incorporated.

SEE ALSO
     stiff2ps(1), psrip(1)