Specifications

working principle

purely video based
You just feed the video of your broadcast camera to the Viotrack Video Processor, that's it. Then VioTrack recognizes the unique markers, calculates the camera pose and sends the tracking data to the Graphics Renderer.
 

video based, like version S1,
but the zoom and focus position is processed to determine the virtual lens parameters. Now just the pose of the camera has to be determined through image processing. The zoom and focus data are received through the internal interface of the lens manufacturer or additional lens encoders.

video based, like version S2,
but an additional sensor camera always detects VioTrack's unique markers.
Now the camera lens can even totally zoom in where no markers are seen in the TV picture, but the video features are still be detected by the sensor camera.

S3 uses two types of markers: one for chroma key Markers can be placed at the green/blue box or at to the studio ceiling.

 
 

 

OR

type of absolute markers

painted with the help of stencils on the green/blue box, the back wall or floor in a keyable color

painted with the help of stencils on the green/blue box, the back wall or floor in a keyable color

painted with the help of stencils on the green/blue box, the back wall or floor in a keyable color
or
retroreflective markers for infrared light to be positioned at the ceiling, lights or wall of the studio

 

degrees of freedom

VioTrack S1 enables the camera to pan and tilt and to change the zoom and the focus.
 

In addition to VioTrack S1, it enables the camera to do basic position moves on air.

All camera axis can be moved freely, even the zoom and focus

limitations

Zoom and focus have to be adjusted that markers can always be seen within the camera picture.
The position of the tripod is fixed. New tripod locations can easily be adjusted off air. To get rid of this limitation, please see VioTrack S2.

 

zoom and focus have to be adjusted that the markers can always be seen within the camera picture.
To get rid of this limitation, please see VioTrack S3.

The sensor camera has to see the markers, therefore only extreme movements e.g. like a 360 degrees tilt do not work

VioTrack Video Processor

 

any commercially available PC with Intel Quad Core with 4 CPUs
PCI Express 4 lane slot for video card
Different models like Workstation, Small Form Factor (SFF) or 19” rack mount available

 

video input

video card supports 8/10-bit uncompressed SD/HD video streams according to SMPTE-259/292/296

 

reference signal

Not needed – system synchronizes on video input signal

 

Lens data

receives serial data from TV lens:
Canon (RS 485) or Fujinon (RS 232) Virtual protocol types are supported
If serial lens data interface is not available, additional encoders can be mounted to the lens

 

data output

Network connection:
10/100/1000 Mbit Ethernet (IEEE 802.3)
UDP/IP-protocol (RFCs 793, 791 und 768)

The Xync camera tracking interface is employed as the interface protocol.