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thumbnail(1) [centos man page]

THUMBNAIL(1)						      General Commands Manual						      THUMBNAIL(1)

NAME
thumbnail - create a TIFF file with thumbnail images SYNOPSIS
thumbnail [ options ] input.tif output.tif DESCRIPTION
thumbnail is a program written to show how one might 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 greyscale 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 calculated by sampling and filtering the input image with each pixel value passed through a contrast curve. OPTIONS
-w Specify the width of thumbnail images in pixels. -h Specify the height of thumbnail images in pixels. -c Specify a contrast curve to apply in generating the thumbnail images. By default pixels values are passed through a linear contrast curve that simply maps the pixel value ranges. Alternative curves are: exp50 for a 50% exponential curve, exp60 for a 60% exponen- tial curve, exp70 for a 70% exponential curve, exp80 for a 80% exponential curve, exp90 for a 90% exponential curve, exp for a pure exponential curve, linear for a linear curve. BUGS
There are no options to control the format of the saved thumbnail images. SEE ALSO
tiffdump(1), tiffgt(1), tiffinfo(1), libtiff(3) Libtiff library home page: http://www.remotesensing.org/libtiff/ libtiff November 2, 2005 THUMBNAIL(1)

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thumbnail(1)							   User Commands						      thumbnail(1)

NAME
thumbnail - create a TIFF file with thumbnail images SYNOPSIS
thumbnail [options] input.tif output.tif DESCRIPTION
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 calculated by sampling and filtering the input image with each pixel value passed through a contrast curve. OPTIONS
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 lin- ear contrast curve that simply 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. OPERANDS
The following operands are supported: input.tif The name of the input TIFF file. output.tif The name of the output file. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWTiff | +-----------------------------+-----------------------------+ |Interface stability |Uncommitted | +-----------------------------+-----------------------------+ SEE ALSO
tiffdump(1), tiffgt(1), tiffinfo(1), libtiff(3) NOTES
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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