[英]Object Tracking on a video using bbox, opencv and python
I am trying to create an robot that can follow a human that I chose, for that I am usig raspberry pi with python and openCV.我正在尝试创建一个可以跟随我选择的人类的机器人,为此我使用带有 python 和 openCV 的树莓派。
I want to create bbox around a human, and I want my camera to track that human, I found pieces of codes on internet and I tried to put them together but when I start the code it gives me image, I can select an object but it doesn't update the frames and the image is freezed.我想围绕一个人创建 bbox,我想让我的相机跟踪那个人,我在互联网上找到了一些代码,我试图把它们放在一起,但是当我启动代码时,它给了我图像,我可以选择一个对象,但是它不会更新帧并且图像被冻结。
It also gives me an error when ii press space or another key: "ok = tracker.init(image, bbox) NameError: name 'tracker' is not defined"当我按下空格键或另一个键时,它也会给我一个错误:“ok = tracker.init(image, bbox) NameError: name 'tracker' is not defined”
Can someone give me some advices?有人可以给我一些建议吗? Here is the code only for object tracking:
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```
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