python+opencv实现动态物体追踪_Python

python+opencv实现动态物体追踪

2021-01-02 23:59cike14 Python

这篇文章主要为大家详细介绍了python+opencv实现动态物体的追踪，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

简单几行就可以实现对动态物体的追踪，足见opencv在图像处理上的强大。

python代码：

									import cv2 

									import numpy as np 

									camera=cv2.VideoCapture(0) 

									firstframe=None

									while True: 

									  ret,frame = camera.read() 

									  if not ret: 

									    break

									  gray=cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY) 

									  gray=cv2.GaussianBlur(gray,(21,21),0) 

									  if firstframe is None: 

									    firstframe=gray 

									    continue

									  frameDelta = cv2.absdiff(firstframe,gray) 

									  thresh = cv2.threshold(frameDelta, 25, 255, cv2.THRESH_BINARY)[1] 

									  thresh = cv2.dilate(thresh, None, iterations=2) 

									  # cnts= cv2.findContours(thresh.copy(),cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_SIMPLE) 

									  x,y,w,h=cv2.boundingRect(thresh) 

									  frame=cv2.rectangle(frame,(x,y),(x+w,y+h),(0,0,255),2) 

									  cv2.imshow("frame", frame) 

									  cv2.imshow("Thresh", thresh) 

									  cv2.imshow("frame2", frameDelta) 

									  key = cv2.waitKey(1)&0xFF

									  if key == ord("q"): 

									    break

									camera.release() 

									cv2.destroyAllWindows()