Fix bugs

app.py

@@ -142,7 +142,7 @@ def crop_image(pil_img, detection_result):
         thickness = max(lw - 1, 1)
         w_label, h_label = cv2.getTextSize(label, 0, fontScale=fontScale, thickness=thickness)[0]
         cv2.rectangle(image, (x1, y1), (x1 + w_label, y1 - h_label - 3), (255, 0, 0), -1, cv2.LINE_AA)
-        cv2.putText(image, label, (x1, y1 - 2), cv2.FONT_HERSHEY_SIMPLEX, fontScale=fontScale, thickness=thickness, lineType=cv2.LINE_AA)
+        cv2.putText(image, label, (x1, y1 - 2), cv2.FONT_HERSHEY_SIMPLEX, fontScale, (255, 255, 255), thickness=thickness, lineType=cv2.LINE_AA)
 
     return crop_images, cv_to_PIL(image)