Hướng dẫn test Camera Pi bằng Python + OpenCV

Trước tiên bạn phải chắc chắn đã cài OpenCV
1. Mở Terminal gõ lệnh :

pip install "picamera[array]

2. Mở Python gõ đoạn code sau :

from picamera.array import PiRGBArray from picamera import PiCamera import time import cv2 # 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)) # allow the camera to warmup time.sleep(0.1) # capture frames from the camera for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True): # grab the raw NumPy array representing the image, then initialize the timestamp # and occupied/unoccupied text image = frame.array gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY) # show the frame cv2.imshow("Frame", image) cv2.imshow('gray', gray) key = cv2.waitKey(1) & 0xFF # clear the stream in preparation for the next frame rawCapture.truncate(0) # if the `q` key was pressed, break from the loop if key == ord("q"): break