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<?php
function relief($im)
{
$filter=imlib_create_filter();
imlib_filter_set_red ($filter, -1, -1, 0, -1, -1, -1);
imlib_filter_set_red ($filter, 0, 0, 0, 1, 1, 1);
imlib_filter_set_green($filter, -1, -1, 0, -1, -1, -1);
imlib_filter_set_green($filter, 0, 0, 0, 1, 1, 1);
imlib_filter_set_blue ($filter, -1, -1, 0, -1, -1, -1);
imlib_filter_set_blue ($filter, 0, 0, 0, 1, 1, 1);
imlib_filter_constants($filter, 0, 768, 768, 768);
imlib_filter_divisors ($filter, 0, 6, 6, 6);
imlib_image_filter($im,$filter);
imlib_free_filter($filter);
}
function edge_detect($im)
{
$filter=imlib_create_filter();
imlib_filter_set($filter, -1, -1, 0, -1, -1, -1);
imlib_filter_set($filter, -1, 0, 0, -3, -3, -3);
imlib_filter_set($filter, -1, 1, 0, -1, -1, -1);
imlib_filter_set($filter, 0, -1, 0, -3, -3, -3);
imlib_filter_set($filter, 0, 0, 0, 16, 16, 16);
imlib_filter_set($filter, 0, 1, 0, -3, -3, -3);
imlib_filter_set($filter, 1, -1, 0, -1, -1, -1);
imlib_filter_set($filter, 1, 0, 0, -3, -3, -3);
imlib_filter_set($filter, 1, 1, 0, -1, -1, -1);
imlib_filter_divisors ($filter, 0, 3, 3, 3);
imlib_image_filter($im,$filter);
imlib_free_filter($filter);
}
$im = imlib_load_image('test.jpg');
$w=imlib_image_get_width($im);
$h=imlib_image_get_height($im);
$im2 = imlib_clone_image($im);
edge_detect($im);
relief($im2);
imlib_blend_image_onto_image($im,$im2,0,$w/2,0,$w/2,$h,$w/2,0,$w/2,$h,0,1,0);
Header('Content-type: image/jpeg');
imlib_dump_image($im);
imlib_free_image($im);
imlib_free_image($im2);
?>
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