This is the command thumbnail that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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% exponential 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.
Use thumbnail online using onworks.net services
