霍夫变换车道线检测如何用代码测试算法
时间: 2023-12-26 18:05:15 浏览: 93
霍夫变换车道线检测的算法可以通过以下步骤进行代码测试:
1. 读取测试图像。可以使用Python的OpenCV库读取图像。
```python
import cv2
image = cv2.imread('test_image.jpg')
```
2. 图像灰度化。使用OpenCV库将读取的图像转换为灰度图像。
```python
gray_image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
```
3. 边缘检测。使用Canny边缘检测算法检测图像边缘。
```python
edges = cv2.Canny(gray_image, 50, 150)
```
4. 霍夫变换。使用HoughLinesP霍夫变换算法检测车道线。
```python
lines = cv2.HoughLinesP(edges, 1, np.pi/180, 20, np.array([]), minLineLength=10, maxLineGap=300)
```
5. 绘制检测结果。将检测到的车道线绘制在原始图像上。
```python
line_image = np.zeros_like(image)
if lines is not None:
for line in lines:
x1, y1, x2, y2 = line[0]
cv2.line(line_image, (x1, y1), (x2, y2), (0, 0, 255), 10)
result = cv2.addWeighted(image, 0.8, line_image, 1, 0)
```
6. 显示结果。使用OpenCV库显示检测结果图像。
```python
cv2.imshow('result', result)
cv2.waitKey(0)
cv2.destroyAllWindows()
```
这样就可以通过代码测试霍夫变换车道线检测算法了。
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