FaceRecognizerSF

Author: morozovsk

Diff for: phpdoc.php

@@ -1416,6 +1416,9 @@ function convertScaleAbs() {}
 define('CV\COLOR_BayerGR2RGBA', 140);
 define('CV\COLOR_COLORCVT_MAX', 143);
 
+define('CV\FaceRecognizerSF_DISTYPE_FR_COSINE', 0);
+define('CV\FaceRecognizerSF_DISTYPE_FR_NORM_L2', 1);
+
 namespace CV\Face;
 use CV\Mat;
 
@@ -1635,4 +1638,12 @@ public static function create(string $model, string $config, int $backend_id = 0
     public function alignCrop(Mat $image, Mat $face) {
         return new Mat();
     }
+
+    public function feature(Mat $face) {
+        return new Mat();
+    }
+
+    public function match(Mat $face1, Mat $face2, $dis_type = 0) {
+        return new Mat();
+    }
 }

Diff for: recognize_face_by_facerecognizersf.php

@@ -0,0 +1,54 @@
+<?php
+
+use CV\Scalar;
+use function CV\{imread, imwrite, rectangle};
+
+$src = imread("images/faces.jpg");
+$scalar = new Scalar(0, 0, 255);
+
+$netDet = CV\FaceDetectorYN::create('models/opencv_zoo/face_detection_yunet_2022mar.onnx', '', $src->size());
+$netRecogn = CV\FaceRecognizerSF::create('models/opencv_zoo/face_recognition_sface_2021dec.onnx', '');
+
+$r = $netDet->detect($src);
+
+$features = [];
+for ($i = 0; $i < $r->rows; $i++) {
+    $confidence = $r->atIdx([$i,14]);
+    var_export($confidence);echo "\n";
+
+    if ($confidence > 0.9) {
+        $startX = $r->atIdx([$i,0]);
+        $startY = $r->atIdx([$i,1]);
+        $w = $r->atIdx([$i,2]);
+        $h = $r->atIdx([$i,3]);
+
+        var_export([$startX, $startY, $startX + $w, $startY + $h]);echo "\n";
+        //rectangle($src, $startX, $startY, $startX + $w, $startY + $h, $scalar, 3);
+
+        //$faces[] = $src->getImageROI(new \CV\Rect($startX, $startY, $w, $h));
+
+        $faceBox = $r->row($i);
+
+        //$face = $netRecogn->alignCrop($r, $faceBox); // todo: doesn't work. needs fix
+        //imwrite("results/_recognize_face_by_facerecognizersf$i.jpg", $face);
+
+        $face = $src->getImageROI(new \CV\Rect($startX, $startY, $w, $h));
+
+        $feature = $netRecogn->feature($face);
+
+        var_export($feature);
+        var_export($feature->data());
+        $features[] = $feature;
+    }
+}
+
+foreach ($features as $i => $feature) {
+    foreach ($features as $j => $feature2) {
+        if ($i == $j) {
+            continue;
+        }
+
+        $similarity = $netRecogn->match($feature, $feature2);
+        var_export($similarity);echo "\n";
+    }
+}