IM_INVERT

Section: C Library Functions (3)
Updated: 11 April 1990
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NAME

im_invert - inverts an image pointed by an image descriptor.

SYNOPSIS

#include <vips/vips.h>

int im_invert(in, out)
IMAGE *in, *out;

DESCRIPTION

im_invert inverts the image held by image descriptor in and writes the result on the image descriptor out. The function works on FMTUCHAR images only. The result at point x of the input image is 255-x at the output image. Input can have any no of channels.

This is not a generally useful program -- it is included as an example of a very simple new-style IO function. Feel the power of the source, Luke!

RETURN VALUE

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

AUTHOR