融合边缘检测的四帧差分python代码
时间: 2023-11-12 17:53:06 浏览: 125
基于Python的SUSAN边缘检测算法.rar
以下是一个简单的四帧差分融合边缘检测的Python代码示例:
```python
import cv2
import numpy as np
cap = cv2.VideoCapture(0)
# 定义前四帧
frame1 = None
frame2 = None
frame3 = None
frame4 = None
while True:
ret, frame = cap.read()
# 灰度化
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# 滤波
gray = cv2.GaussianBlur(gray, (21, 21), 0)
if frame1 is None:
frame1 = gray
elif frame2 is None:
frame2 = gray
elif frame3 is None:
frame3 = gray
else:
# 计算四帧差分
frame4 = cv2.absdiff(frame1, frame2)
frame5 = cv2.absdiff(frame2, frame3)
frame6 = cv2.absdiff(frame3, gray)
# 融合边缘
edges1 = cv2.Canny(frame4, 50, 150)
edges2 = cv2.Canny(frame5, 50, 150)
edges3 = cv2.Canny(frame6, 50, 150)
# 合并三个边缘图像
edges = cv2.bitwise_or(edges1, edges2)
edges = cv2.bitwise_or(edges, edges3)
# 显示图像
cv2.imshow("Edges", edges)
# 更新前三帧
frame1 = frame2
frame2 = frame3
frame3 = gray
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
```
该代码使用OpenCV库捕获视频流,并计算四帧差分。然后,它将边缘检测应用于四帧差分图像,同时融合三个边缘图像以提高检测结果的准确性。最后,它显示了融合边缘图像。
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