protected function Face_Detector::do_detect_greedy_big_to_small in Image Focus Crop 6
Same name and namespace in other branches
- 7 php-facedetection/FaceDetector.php \Face_Detector::do_detect_greedy_big_to_small()
1 call to Face_Detector::do_detect_greedy_big_to_small()
- Face_Detector::face_detect in php-facedetection/
FaceDetector.php
File
- php-facedetection/
FaceDetector.php, line 142
Class
Code
protected function do_detect_greedy_big_to_small($ii, $ii2, $width, $height) {
$s_w = $width / 20.0;
$s_h = $height / 20.0;
$start_scale = $s_h < $s_w ? $s_h : $s_w;
$scale_update = 1 / 1.2;
for ($scale = $start_scale; $scale > 1; $scale *= $scale_update) {
$w = 20 * $scale >> 0;
$endx = $width - $w - 1;
$endy = $height - $w - 1;
$step = max($scale, 2) >> 0;
$inv_area = 1 / ($w * $w);
for ($y = 0; $y < $endy; $y += $step) {
for ($x = 0; $x < $endx; $x += $step) {
$passed = $this
->detect_on_sub_image($x, $y, $scale, $ii, $ii2, $w, $width + 1, $inv_area);
if ($passed) {
return array(
'x' => $x,
'y' => $y,
'w' => $w,
);
}
}
// end x
}
// end y
}
// end scale
return null;
}