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MX Cameras

Vicon MX Hardware System Reference 3-3

Each MX Camera is programmed with firmware to control its

operation and enable it to perform its own onboard grayscale

processing. As all MX Cameras use the same firmware, a mixture of

cameras with different image sensors can be connected to and run on

the same Vicon MX system. Vicon MX automatically recognizes

cameras and their relevant characteristics when they are plugged in.

Vicon MX’s distributed architecture enables the camera software to be

updated across the system network.

MX Cameras evaluate an entire image in grayscale, rather than

applying a black and white threshold. This provides more information

and increases motion measurement accuracy over an equivalent

resolution black and white camera. The MX Cameras perform the

majority of data processing. They generate grayscale blobs for

reflections from objects in the capture volume and then use centroid-

fitting algorithms to determine which of these objects are likely to be

markers. MX Camera data is sent to Vicon application software for

viewing and further processing. For details, see your Vicon software

documentation.

Even with the elimination of background grayscale through

thresholding, MX performance will be limited in real time by the

number of cameras, number of markers, and the frame rate. MX data

capture to disk is limited by the time it takes to write the data to disk

as no buffering outside the host PC is available. You can configure the

buffering of MX data at the time of capture. You do this in the Vicon

software on the host PC. For details, see the software documentation.

Cameras are automatically assigned master (controlling device) or

subordinate (controlled device) status. Each Vicon MX system has

only one master device, which provides the synchronization to the

rest of the system and is established automatically during system

booting. The master device is an MX Camera, or an MX Ultranet if

present, or an MX Control if present. For details on system

synchronization by the MX Control, see Chapter 4 MX Control.

Camera Lenses

The function of the camera lens is to collect reflected light from a

scene and form a focused image on the camera’s sensor plane. The

type of lens that will provide optimum performance for a particular

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