58 lines
1.3 KiB
Python
58 lines
1.3 KiB
Python
# Example showing how to grab frames using the PiCamera module instead of OpenCV
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# import the necessary packages
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from picamera.array import PiRGBArray
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from picamera import PiCamera
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from fractions import *
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import time
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import cv2
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print("OpenCV version = " + cv2.__version__)
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# initialize the camera and grab a reference to the raw camera capture
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camera = PiCamera()
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time.sleep(1) # Wait for camera
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camera.resolution = (640, 480)
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camera.framerate = 30
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camera.shutter_speed = camera.exposure_speed
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camera.exposure_mode = 'off'
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gain = camera.awb_gains
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camera.awb_mode='off'
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#gain = (Fraction(2,1), Fraction(1,1))
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#gain = (1.5, 1.5)
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camera.awb_gains = gain
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print("shutter_speed = ", camera.shutter_speed)
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print("awb_gains = ", gain)
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rawCapture = PiRGBArray(camera, size=camera.resolution)
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# Open a window
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WIN_RF = "Frame";
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cv2.namedWindow(WIN_RF);
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cv2.moveWindow(WIN_RF, 100, 100);
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# allow the camera to warmup
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time.sleep(0.1)
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while True:
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# capture frames from the camera
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camera.capture(rawCapture, format="bgr", use_video_port=True)
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# grab the raw NumPy array representing the image
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image = rawCapture.array
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# show the frame
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cv2.imshow(WIN_RF, image)
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key = cv2.waitKey(4) & 0xFF
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# if the `q` key was pressed, break from the loop
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if key == ord("q"):
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break
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