Changing and Triggering the Cameras

The camera settings can be changed while scanning.

From the scanning screen tap Settings .

The following camera settings screen is displayed.

There are two camera modes;

• Use Auto Trigger - 270° Panorama: In large and open environments to ensure enough photos are taken. In auto trigger mode the cameras are triggered after traveling a specified distance. Stop moving when the NavVis MLX beeps, and the cameras will be triggered. When using auto trigger mode, the image locations will be distributed more randomly in the final scan.

• Use manual camera triggering in complicated environments to ensure photos are taken in the correct locations. There are two methods of triggering the camera:

  • 360° Panorama: Hold the device high above your head as shown, press the trigger button for longer than usual (more than 6 seconds). Use this method at corridor intersections or when you are in the middle of a room. A preview of the panorama will be displayed in the screen.

• 270° Panorama: Hold the device as shown in the Harness System, press the trigger button once briefly. Use this method as the default position when scanning as usual. A preview of the panorama will  not be displayed in the screen.

Note: An image is captured immediately when the camera button is pressed. As a result, the images may contain motion blur if you are in motion.

Auto triggering of Cameras

The NavVis SmartTrigger technology takes the current speed and angular velocity into account when triggering the cameras.

• After moving a set distance, a beep sound will inform you that the device is ready to capture the next image.

To trigger the cameras, stop and wait for the beep sound.

NavVis MLX Cameras’ Field Of View

During panorama stitching, input from all four of the cameras is taken into account to achieve a full panorama view. The cameras are arranged on the device in a fixed position to enable their fields of view to overlap as much as possible.
Shown below are the blind spots close to the camera head where the cameras cannot view. This is how the operator is hidden from the images.

This also means that if an object, like a wall, is too close to the device, some image information may be missing.

Note: Aim for at least 1 metre away from walls and other objects to achieve a high quality panorama image.