Update scaleFactor

 [verification_server]
 model=models/20200816-080621
-threshold=0.775
+threshold=0.78
 image_size=160

@@ -153,7 +153,7 @@ function main()
             src.copyTo(dst);
             // detect faces.
             let msize = new cv.Size(video.width / 4, video.height / 4);
-            classifier.detectMultiScale(dst, faces, 1.1, 3, 0, msize);
+            classifier.detectMultiScale(dst, faces, 1.1, 5, 0, msize);
             // draw faces.
             for (let i = 0; i < faces.size(); ++i) {
                 let face = faces.get(i);

@@ -133,7 +133,7 @@ function main()
             src.copyTo(dst);
             // detect faces.
             let msize = new cv.Size(video.width / 4, video.height / 4);
-            classifier.detectMultiScale(dst, faces, 1.1, 3, 0, msize);
+            classifier.detectMultiScale(dst, faces, 1.1, 5, 0, msize);
             // draw faces.
             for (let i = 0; i < faces.size(); ++i) {
                 let face = faces.get(i);