global /io/opencv/modules/videoio/src/cap_v4l.cpp (880) open VIDEOIO(V4L2): can't find camera device

asked 2020-07-27 17:56:41 -0500

I keep getting this error when I run this code on the ubuntu bash 18.04 terminal: Here is my code, the tensorflow part works just fine it's only the opencv part that is giving me an error.

import cv2 from darkflow.net.build import TFNet import numpy as np import time

options = { 'model': 'cfg/yolo.cfg', 'load': 'bin/yolo.weights', 'threshold': 0.2, 'gpu': 1.0 }

tfnet = TFNet(options) colors = [tuple(255 * np.random.rand(3)) for _ in range(10)]

capture = cv2.VideoCapture(0) capture.set(cv2.CAP_PROP_FRAME_WIDTH, 1920) capture.set(cv2.CAP_PROP_FRAME_HEIGHT, 1080)

while True: stime = time.time() ret, frame = capture.read() if ret: results = tfnet.return_predict(frame) for color, result in zip(colors, results): tl = (result['topleft']['x'], result['topleft']['y']) br = (result['bottomright']['x'], result['bottomright']['y']) label = result['label'] confidence = result['confidence'] text = '{}: {:.0f}%'.format(label, confidence * 100) frame = cv2.rectangle(frame, tl, br, color, 5) frame = cv2.putText( frame, text, tl, cv2.FONT_HERSHEY_COMPLEX, 1, (0, 0, 0), 2) cv2.imshow('frame', frame) print('FPS {:.1f}'.format(1 / (time.time() - stime))) if cv2.waitKey(1) & 0xFF == ord('q'): break

capture.release() cv2.destroyAllWindows()

python: 3.6.7 ubuntu: 18.04 opencv: 4.3.0.36

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Comments

it's not your code, you have a hardware / driver problem (and we probably can't help)

berak gravatar imageberak ( 2020-07-28 02:51:57 -0500 )edit