Update demo.py

demo.py

@@ -20,7 +20,7 @@ def plot_one_box(x, img, color=None, label=None, score=None, line_thickness=3):
         cv2.putText(img, label, (c1[0], c1[1] - 2), 0, tl / 3, [0, 0, 0], thickness=tf, lineType=cv2.LINE_AA)
 
         c1 = c2
-        c2 = c1[0] + t_size[0], c1[1] - t_size[1] - 3
+        c2 = c1[0] + t_size[0], c1[1] + t_size[1] + 3
         cv2.rectangle(img, c1, c2, [0, 0, 255], -1, cv2.LINE_AA)  # filled
     return img