charuco board 0boards detected

[yichuan1998]

Hi, thanks for your great job. I followed the steps in aniposelib tutorial but got error: 0 boards detected. Could help me with that? Thanks!

My code:

from aniposelib.cameras import CameraGroup

vidnames = [['output0.avi'], ['output1.avi'], ['output2.avi']]

cam_names = ['A', 'B', 'C']

n_cams = len(vidnames)

board = CharucoBoard(7, 10, square_length=25, # here, in mm but any unit works marker_length=18.75, marker_bits=4, dict_size=50)

cgroup = CameraGroup.from_names(cam_names, fisheye=False) cgroup.calibrate_videos(vidnames, board) cgroup.dump('calibration.toml')

>
Generate board and print it in A4 format:
```import cv2
from aniposelib.boards import CharucoBoard

board1 = CharucoBoard(7, 10,
                     square_length=25, # here, in mm but any unit works
                     marker_length=18.75,
                     marker_bits=4, dict_size=50)

img = board1.draw((2550,3300))
cv2.imwrite("img.jpg", img)

Sincerely

[lambdaloop]

Hello, I'm not sure if you're still having this issue, but it's hard to diagnose from this alone. Could you post some sample videos to help debug? Thank you

[lambdaloop]

Could you try with the latest version of aniposelib (0.6.0 as of this writing) ? Also, could you try with CharucoBoard(10, 7, ...) instead of CharucoBoard(7, 10, ...) to see if that works?

[yichuan1998]

Hi, I am still having this issue. My code:

def cali():
    vidnames = [[r'D:\my_work\Only_test\video\0\video_152122079464.mp4'],
                [r'D:\my_work\Only_test\video\1\video_104422070017.mp4']]

    cam_names = ['A', 'B']

    n_cams = len(vidnames)

    board = CharucoBoard(4, 5,
                         square_length=14,  # here, in mm but any unit works
                         marker_length=10,
                         marker_bits=4, dict_size=50)

    # the videos provided are fisheye, so we need the fisheye option
    cgroup = CameraGroup.from_names(cam_names, fisheye=False)

    cgroup.calibrate_videos(vidnames, board)
    cgroup.dump('calibration.toml')

I'm sure the CharucoBoard parameters are right, here are my charuco board and the recorded videos. video_104422070017.zip

video_152122079464.zip