face recog fixed

pages/4_Face Recognition.py

@@ -57,22 +57,23 @@ def step4_page():
         st.image(image)
         st.info("Select the tolerance level you want for your model! (How much distance between faces to consider it a match. "
                 "Lower is more strict. 0.6 is typical best performance.)")
-        tolerance = st.slider('Select tolerance level', 0, 1, 0.6, 0.1)
-        for (top, right, bottom, left), face_encoding in zip(face_locations, face_encodings):
-            # See if the face is a match for the known face(s)
-            matches = face_recognition.compare_faces(known_face_encodings, face_encoding, tolerance=tolerance)
+        tolerance = st.slider('Select tolerance level', 0.0, 1.0, 0.6, 0.1)
+        if tolerance:
+            for (top, right, bottom, left), face_encoding in zip(face_locations, face_encodings):
+                # See if the face is a match for the known face(s)
+                matches = face_recognition.compare_faces(known_face_encodings, face_encoding, tolerance=tolerance)
 
-            name = "Unknown"
-            # If a match was found in known_face_encodings, just use the first one.
-            if True in matches:
-                first_match_index = matches.index(True)
-                name = known_face_names[first_match_index]
+                name = "Unknown"
+                # If a match was found in known_face_encodings, just use the first one.
+                if True in matches:
+                    first_match_index = matches.index(True)
+                    name = known_face_names[first_match_index]
 
-            face_image = image[top:bottom, left:right]
-            pil_image = Image.fromarray(face_image)
-            cols[i].image(pil_image, use_column_width=True)
-            cols[i].write("Person name: " +name)
-            i+=1
+                face_image = image[top:bottom, left:right]
+                pil_image = Image.fromarray(face_image)
+                cols[i].image(pil_image, use_column_width=True)
+                cols[i].write("Person name: " +name)
+                i+=1
 
     st.info("Click on the button below to complete this level!")
     if st.button("Complete Level"):