python求轮廓的最小外接有方向的
时间: 2023-11-18 18:01:24 浏览: 32
Python中可以使用OpenCV库来求轮廓的最小外接有方向的矩形,以下是基本步骤:
1. 导入OpenCV库:
```python
import cv2
```
2. 读取图像并进行预处理:
```python
image = cv2.imread('image.jpg')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
blurred = cv2.GaussianBlur(gray, (5, 5), 0)
edged = cv2.Canny(blurred, 50, 150)
```
3. 寻找轮廓:
```python
contours, _ = cv2.findContours(edged.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
```
4. 遍历轮廓,找到最小外接有方向的矩形:
```python
for contour in contours:
rect = cv2.minAreaRect(contour)
box = cv2.boxPoints(rect)
box = np.int0(box)
cv2.drawContours(image, [box], 0, (0, 255, 0), 2)
```
5. 显示结果:
```python
cv2.imshow('Result', image)
cv2.waitKey(0)
cv2.destroyAllWindows()
```
这样,就可以使用Python通过OpenCV库来求轮廓的最小外接有方向的矩形了。