[我正在尝试创建一个可以跟随我选择的人类的机器人,为此,我使用Python和openCV来使用树莓派。
我想围绕一个人创建bbox,并且我希望我的相机跟踪那个人,我在互联网上找到了几段代码,我试图将它们放在一起,但是当我启动代码时,它会给我图像,我可以选择一个对象,但它不会更新框架并且图像被冻结。
[ii按下空格键或其他键时也给我一个错误:“确定= tracker.init(图片,bbox)NameError:名称“ tracker”未定义”
有人可以给我一些建议吗?这是仅用于对象跟踪的代码:
from picamera import PiCamera
import time
import cv2
import numpy as np
# initialize the camera and grab a reference to the raw camera capture
camera = PiCamera()
camera.resolution = (640, 480)
camera.framerate = 32
rawCapture = PiRGBArray(camera, size=(640, 480))
while True:
for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):
image = frame.array
bbox = cv2.selectROI(image, False)
ok = tracker.init(image, bbox)
cv2.imshow("Camera Output", image)
#rawCapture.truncate(0)
ok, bbox = tracker.update(image)
fps = cv2.getTickFrequency() / (cv2.getTickCount() - timer)
if ok:
p1 = (int(bbox[0]), int(bbox[1]))
p2 = (int(bbox[0] + bbox[2]), int(bbox[1] + bbox[3]))
cv2.rectangle(frame, pi, p2, (255, 0, 0), 2, 1)
else:
cv2.putText(image, "Tracking failure detected", (100, 80),
cv2.FONT_HERSHEY_SIMPLEX, 0.75, (0, 0, 255), 2)
cv2.putText(frame, tracker_type + "Tracker", (100, 20),
cv2.FONT_HERSHEY_SIMPLEX, 0.75, (50, 170, 50), 2);
cv2.putText(image, "FPS:" ++ str(int(fps)), (100, 50),
cv2.FONT_HERSHEY_SIMPLEX, 0.75, (50, 170, 50), 2);
cv2.imshow("Tracking", image)
k = cv2.waitKey(5) #& 0xFF
if "q" == chr(k & 255):
break```
因此未定义方法tracker
。我发现this会初始化该方法。你可以这样做:
tracker = cv2.TrackerKCF_create()