The OpenPose addon for Blender on Windows 10 can't detect my (virtual) webcam or a video file.

Hello.

Recently I have installed OpenCV and OpenPose for tracking the head of a 3d character created,rigged and animated in Blender 2.81 on Windows 10. When I use OpenCV I use this addon : FacialMotionCapture

and when I use Open Pose,I have installed this addon :

blender-addon-openpose

Whats the problem ? The problem is that the addon written for OpenCV works good,but the addon for Openpose doesnt : it seems not able to recognize my (virtual) webcam or any video file. I have no python experience,but I have looked inside the addons codes to try to understand why.

Please check the relevant python code thats inside the OpenCV / Facial motion capture addon below :

# Show camera image in a window
cv2.imshow(Output, image)

# Show camera image in a window
cv2.imshow(Output, image)
cv2.waitKey(1)

return { PASS_THROUGH}

def init_camera(self):
if self._cap == None:
self._cap = cv2.VideoCapture(0)
self._cap.set(cv2.CAP_PROP_FRAME_WIDTH, self.width)
self._cap.set(cv2.CAP_PROP_FRAME_HEIGHT, self.height)
self._cap.set(cv2.CAP_PROP_BUFFERSIZE, 1)
time.sleep(1.0)

Now check the relevant python code thats inside the OpenPose addon below :

class Camera:

Utility class embedding a camera, its parameters and buffers

def __init__(self,
path: str) -> None:
self._path = path
self._camera = cv2.VideoCapture()
self._camera.open(path)
self._shape: Tuple[int, int, int] = (0, 0, 0)
self._bbox = [180, 120, 270, 270]
self._bbox_new = self._bbox

class OpenPoseWrapper:
def __init__(self) -> None:
self._cameras: List[Camera] = []
self._image_buffer: Optional[bpy.types.Image] = None
self._camera_paths: List[str] = [/dev/video0, /dev/video1]
self._is_stereo = False
self._is_stereo_calibrated = False

What I want to know is the reason why OpenCV is able to grab the video file that I use,instead the OpenPose addon is not able to do that. I suspect that the code of the OpenPose addon has been written for Linux,but Im using Windows 10. For this reason I should change this line :

self._camera_paths: List[str] = [/dev/video0, /dev/video1]

Infact in Windows 10 there isnt any kind of device like that. So,how should I change the code if I want that Windows 10 is able to detect the video file that the code written for OpenCV is able to detect ?
About the recuiter
Member since Mar 14, 2020
Rory Millikin
from Hubei, China

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