From 88a8be12977d78c5a68ee398a9698d463d951bad Mon Sep 17 00:00:00 2001
From: WenmuZhou <zjwenmu@gmail.com>
Date: Wed, 30 Jun 2021 10:50:13 +0800
Subject: [PATCH] add assert

---
 tools/infer/utility.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index 3fa62c77..613e42ef 100755
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -625,6 +625,7 @@ def get_rotate_crop_image(img, points):
     points[:, 0] = points[:, 0] - left
     points[:, 1] = points[:, 1] - top
     '''
+    assert len(points) == 4, "shape of points must be 4*2"
     img_crop_width = int(
         max(
             np.linalg.norm(points[0] - points[1]),
-- 
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