1IM_CONV(3)                 Library Functions Manual                 IM_CONV(3)
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NAME

6       im_lowpass - remove high frequencies quickly
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SYNOPSIS

9       #include <vips/vips.h>
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11       int im_lowpass(in, out, x, y)
12       IMAGE *in, *out;
13       int x, y;
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DESCRIPTION

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

23       The function returns 0 on success and -1 on error.
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SEE ALSO

26       im_shrink(3), im_similarity_area(3).
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29       National Gallery
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AUTHOR

32       Too embarrassed to say
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36                                  2 May 1991                        IM_CONV(3)
Impressum