|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* @copyright Copyright (c) 2020, Matias De lellis <[email protected]> |
|
4
|
|
|
* |
|
5
|
|
|
* @author Matias De lellis <[email protected]> |
|
6
|
|
|
* |
|
7
|
|
|
* @license GNU AGPL version 3 or any later version |
|
8
|
|
|
* |
|
9
|
|
|
* This program is free software: you can redistribute it and/or modify |
|
10
|
|
|
* it under the terms of the GNU Affero General Public License as |
|
11
|
|
|
* published by the Free Software Foundation, either version 3 of the |
|
12
|
|
|
* License, or (at your option) any later version. |
|
13
|
|
|
* |
|
14
|
|
|
* This program is distributed in the hope that it will be useful, |
|
15
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
16
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
17
|
|
|
* GNU Affero General Public License for more details. |
|
18
|
|
|
* |
|
19
|
|
|
* You should have received a copy of the GNU Affero General Public License |
|
20
|
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
21
|
|
|
* |
|
22
|
|
|
*/ |
|
23
|
|
|
|
|
24
|
|
|
namespace OCA\FaceRecognition\Helper; |
|
25
|
|
|
|
|
26
|
|
|
class FaceRect { |
|
27
|
|
|
|
|
28
|
|
|
public static function getOverlayPercent($rectA, $rectB): float { |
|
29
|
|
|
// Firts face rect |
|
30
|
|
|
$leftA = $rectA['left']; |
|
31
|
|
|
$rightA = $rectA['right']; |
|
32
|
|
|
$topA = $rectA['top']; |
|
33
|
|
|
$bottomA = $rectA['bottom']; |
|
34
|
|
|
|
|
35
|
|
|
// Face rect to compare |
|
36
|
|
|
$leftB = $rectB['left']; |
|
37
|
|
|
$rightB = $rectB['right']; |
|
38
|
|
|
$topB = $rectB['top']; |
|
39
|
|
|
$bottomB = $rectB['bottom']; |
|
40
|
|
|
|
|
41
|
|
|
// If one rectangle is on left side of other |
|
42
|
|
|
if ($leftA >= $rightB || $leftB >= $rightA) |
|
43
|
|
|
return 0.0; |
|
44
|
|
|
|
|
45
|
|
|
// If one rectangle is above other |
|
46
|
|
|
if ($topA >= $bottomB || $topB >= $bottomA) |
|
47
|
|
|
return 0.0; |
|
48
|
|
|
|
|
49
|
|
|
// Overlap area. |
|
50
|
|
|
$leftO = max($leftA, $leftB); |
|
51
|
|
|
$rightO = min($rightA, $rightB); |
|
52
|
|
|
$topO = max($topA, $topB); |
|
53
|
|
|
$bottomO = min($bottomA, $bottomB); |
|
54
|
|
|
|
|
55
|
|
|
// Calculate the areas of all the rectangles |
|
56
|
|
|
$areaA = ($rightA - $leftA) * ($bottomA - $topA); |
|
57
|
|
|
$areaB = ($rightB - $leftB) * ($bottomB - $topB); |
|
58
|
|
|
$overlapArea = ($rightO - $leftO) * ($bottomO - $topO); |
|
59
|
|
|
|
|
60
|
|
|
// Calculate and return the overlay percent. |
|
61
|
|
|
return floatval($overlapArea / ($areaA + $areaB - $overlapArea)); |
|
62
|
|
|
} |
|
63
|
|
|
|
|
64
|
|
|
} |
|
65
|
|
|
|
matiasdelellis /
facerecognition
