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Name

im_lowpass - remove high frequencies quickly

Synopsis

#include <vips/vips.h>

int im_lowpass(in, out, x, y)
IMAGE *in, *out;
int x, y;

Description

Expand image up to X by Y pixels. Linear interpolation. Used by lowpass(1X) for simple and nasty low-pass filtering. The result is very poor, but good enough for smoothing out whites. Any number of bands, output size == input size, any non-complex type.

Return Value

The function returns 0 on success and -1 on error.

See Also

im_shrink(3) , im_similarity_area(3) .

Copyright


National Gallery

Author

Too embarrassed to say


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