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OpenSolaris 2009.06 - man page for thumbnail (opensolaris section 1)

thumbnail(1)				  User Commands 			     thumbnail(1)

       thumbnail - create a TIFF file with thumbnail images

       thumbnail [options] input.tif output.tif

       The  thumbnail  command	shows how to use the SubIFD tag (#330) to store thumbnail images.
       thumbnail copies a TIFF Class F facsimile file to the output file and, for each image,  an
       8-bit  grayscale  thumbnail  sketch. The output file contains the thumbnail image with the
       associated full-resolution page linked below with the SubIFD tag.

       By default, thumbnail images are 216 pixels wide by 274 pixels high.   Pixels  are  calcu-
       lated  by  sampling  and  filtering the input image with each pixel value passed through a
       contrast curve.

       The following options are supported:

       -c	       Specify a contrast curve to apply when generating the thumbnail images. By
		       default, pixel values are passed through a linear contrast curve that sim-
		       ply maps the pixel value ranges. Alternative curves are as follows:

		       exp50		       50% exponential curve

		       exp60		       60% exponential curve

		       exp70		       70% exponential curve

		       exp80		       80% exponential curve

		       exp90		       90% exponential curve

		       exp		       pure exponential curve

		       linear		       linear curve

       -h	       Specify the height of thumbnail images in pixels.

       -w	       Specify the width of thumbnail images in pixels.

       The following operands are supported:

       input.tif       The name of the input TIFF file.

       output.tif      The name of the output file.

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWTiff			   |
       |Interface stability	     |Uncommitted		   |

       tiffdump(1), tiffgt(1), tiffinfo(1), libtiff(3)

       There are no options to control the format of the saved thumbnail images.

       Updated by Breda McColgan, Sun Microsystems Inc., 2004.

SunOS 5.11				   26 Mar 2004				     thumbnail(1)

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