(n_cams)
| 9 | |
| 10 | |
| 11 | def query_cameras(n_cams): |
| 12 | cam_frames = {} |
| 13 | cap = None |
| 14 | for camid in range(n_cams): |
| 15 | log(f"Trying camera with id {camid}") |
| 16 | cap = cv2.VideoCapture(camid) |
| 17 | |
| 18 | if not cap.isOpened(): |
| 19 | log(f"Camera with id {camid} is not available") |
| 20 | continue |
| 21 | |
| 22 | ret, frame = cap.read() |
| 23 | |
| 24 | if not ret or frame is None: |
| 25 | log(f"Could not read from camera with id {camid}") |
| 26 | cap.release() |
| 27 | continue |
| 28 | |
| 29 | for i in range(10): |
| 30 | ret, frame = cap.read() |
| 31 | |
| 32 | cam_frames[camid] = frame.copy() |
| 33 | |
| 34 | cap.release() |
| 35 | |
| 36 | return cam_frames |
| 37 | |
| 38 | |
| 39 | def make_grid(images, cell_size=(320, 240), cols=2): |
no test coverage detected