add ball

data/1.OpenCV初阶/1.OpenCV基础/2.OpenCV安装/install.json

@@ -3,4 +3,4 @@
     "author": "huanhuilong",
     "source": "install.md",
     "notebook_enable": true
-  }
\ No newline at end of file
+}
\ No newline at end of file

data/1.OpenCV初阶/1.OpenCV基础/3.图像的基本操作/ball.md

@@ -22,7 +22,6 @@ if __name__ == '__main__':
     for i in range(-1, 4):
         # TODO(You): 请在此实现代码
 
-    cv2.imwrite("continue_ball.jpg", img)
     cv2.imshow("continue_ball", img)
     cv2.waitKey(0)
     cv2.destroyAllWindows()
@@ -30,6 +29,31 @@ if __name__ == '__main__':
 
 请实现粘贴足球部分的代码。
 
+## template
+
+```python
+import cv2
+import numpy as np
+
+if __name__ == '__main__':
+    img = cv2.imread('ball.jpg', cv2.IMREAD_COLOR)
+    start = [493, 594]
+    end = [112, 213]
+    ball = img[start[0]:start[1], end[0]:end[1]]
+    x_step = 101
+    y_step = 10
+    for i in range(-1, 4):
+        x_offset = x_step*i
+        y_offset = y_step*i
+        img[start[0]-y_offset:start[1]-y_offset,
+            end[0]+x_offset:end[1]+x_offset] = ball
+
+    cv2.imshow("continue_ball", img)
+    cv2.waitKey(0)
+    cv2.destroyAllWindows()
+
+```
+
 ## 答案
 
 ```python

data/1.OpenCV初阶/1.OpenCV基础/3.图像的基本操作/ball.py

@@ -14,7 +14,6 @@ if __name__ == '__main__':
         img[start[0]-y_offset:start[1]-y_offset,
             end[0]+x_offset:end[1]+x_offset] = ball
 
-    cv2.imwrite("continue_ball.jpg", img)
     cv2.imshow("continue_ball", img)
     cv2.waitKey(0)
     cv2.destroyAllWindows()