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xzoom - magnify or minify an image in the x direction
xzoom
inimage outimage xscale yscale [-i -b -t -m or -q] [-w blurfactor]
xzoom
magnifies or minifies an image in the x direction with or without filtering
(xscale and yscale are floating point values). The filtering method is one
pass, uses 1-d convolution, and is optimized by integer arithmetic and precomputation
of filter coefficients. Normally xzoom uses a triangle filter kernel in
the x direction. The -i (impulse) option causes xzoom to do no filtering
as the image is resized. The -b (box) option causes xzoom to use a box as
the filter kernel. The -t (triangle) option is the default. The -m (mitchell)
option uses a cubic filter kernel. The -q (quadratic) indicates that a quadradic
function should be used as the filter kernel.
izoom(6D)
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