Synching two cameras ?

I am thinking about using multiple cameras and I know I need to synchronize them. Is it possible to access multiple cameras with this wrapper and can I synch the cameras (as the kinect SDK docs says) by doing something like this :

k4a_device_configuration_t deviceConfig;
deviceConfig.wired_sync_mode = K4A_WIRED_SYNC_MODE_SUBORDINATE

with the wrapper ?

[shagren]

1. You need additional cable for connecting cameras with each other, please read https://docs.microsoft.com/en-US/azure/Kinect-dk/multi-camera-sync
2. You must use for master camera:

   Config(
      ...
      wired_sync_mode = WiredSyncMode.MASTER
      ...
   )

And for other camera(s):

   Config(
      ...
      wired_sync_mode = WiredSyncMode.SUBORDINATE,
      subordinate_delay_usec = 160, # 320, 480, ... for next subordinates 
      ...
   )

1. color_resolution, depth_mode and fps must be identical for all cameras configs
2. First read capture from master camera, then from other cameras.
3. Sometimes sync failed and captures can be from different phases due internal queue. There are some ideas but I think you can just ignore that situation: https://github.com/microsoft/Azure-Kinect-Sensor-SDK/blob/04168adc949c44180c51d90a8b8d34807891ec85/examples/green_screen/MultiDeviceCapturer.h#L95

BTW, storing images to disk can be expensive operation, maybe you can keep some images in memory and save later.

[kimtaehyeong]

Thanks for the good answer.

If you connect the 3.5 mm terminal, the setting is finished. Could you please write a simple example code for the capture? Thank you very much.