树莓派小车OPenCV黑色巡线
时间: 2024-06-14 19:05:10 浏览: 160
树莓派小车使用OpenCV进行黑色巡线的步骤如下:
1. 导入所需的库和模块:
```python
import cv2
import numpy as np
```
2. 初始化摄像头:
```python
cap = cv2.VideoCapture(0)
```
3. 设置颜色范围:
```python
lower_black = np.array([0, 0, 0])
upper_black = np.array([180, 255, 30])
```
4. 循环读取摄像头图像:
```python
while True:
ret, frame = cap.read()
if not ret:
break
```
5. 对图像进行预处理:
```python
hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv, lower_black, upper_black)
blur = cv2.GaussianBlur(mask, (5, 5), 0)
```
6. 查找轮廓并绘制:
```python
contours, _ = cv2.findContours(blur, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
if len(contours) > 0:
max_contour = max(contours, key=cv2.contourArea)
cv2.drawContours(frame, [max_contour], -1, (0, 255, 0), 2)
```
7. 显示图像:
```python
cv2.imshow("Line Detection", frame)
if cv2.waitKey(1) == ord('q'):
break
```
8. 释放资源:
```python
cap.release()
cv2.destroyAllWindows()
```
这是一个基本的黑色巡线的示例代码,你可以根据实际情况进行调整和优化。
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