fix confidence

demo.py

@@ -26,7 +26,7 @@ def main():
             t1 = time.time()
             im = Image.open(buffer)
             # im.save("saved_images/image.jpg")
-            res_img = detect(im, confidence)
+            res_img = detect(im, confidence / 100.0)
             t2 = time.time()
 
         # Displaying the image