ZOOMSTIFF(1) Impressario ZOOMSTIFF(1)NAMEzoomstiff - magnify or shrink a TIFF stream
SYNOPSISzoomstiff [ -b | -g | -i | -m | -t | -q ] [ -w blur ] [ -s ] xsize ysize
DESCRIPTIONzoomstiff magnifies or shrinks the images contained in a TIFF stream
(STIFF), with or without filtering. The filtering method is one pass,
uses 2-d convolution, and is optimized by integer arithmetic and
precomputation of filter coefficients. By default, zoomstiff uses a
triangle filter kernel (-b option, below).
zoomstiff uses the same algorithms as izoom(6D), modified to operate on
the various permutations of STIFF.
xsize and ysize are the number of pixels desired in the horizontal and
vertical directions respectively in the resized image, unless the -s
option is present, in which case they are scale factors.
zoomstiff reads from its standard input and writes the zoomed image data
to its standard output.
Command Line Options
zoomstiff supports the following command line options:
-b Use a box as the filter kernel.
-g Use a Gaussian filter kernel.
-i Do impulse zooming. This option disables the filtering that
zoomstiff does by default. This will result in much faster
execution time, but undesirable effects in the image data.
-m Use a Mitchell kernel.
-t Use a triangle kernel. This is the default.
-q Use a quadratic function as the filter kernel.
-s When this option is present, interpret xsize and ysize as
scaling factors rather than sizes.
-w blur Specify the width of the reconstruction filter. This will
affect how blurry the resulting image is. If you want more
blur use a larger number. The default value is 1.0.
SEE ALSOvstiff(1), libstiff(3), izoom(6D).
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