NeuroMotive™ User’s Manual
LB-0336 Rev. 1.00
Page 32
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Embedded statistics -
This shows or hides various statistics in the video frame itself.
Currently only two statistics display: Time Elapsed and Frame Number.
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HQ Linear color processing -
Determines which algorithm is used to convert the color
information from the camera’s format to RGB format. This occurs before any image
processing is done for tracking and recording. The HQ Linear regression algorithm takes
more time, but produces a cleaner image while the IPP edge sensing algorithm (if the box
is unchecked) is very quick, but leaves a noisy image, especially around the edges. How the
image is colored can end up affecting how well tracking will proceed. The default is to use
the HQ Linear regression algorithm.
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Target capture frame rate (fps) -
Sets the frame rate of the camera. The higher the rate,
the more resources (time, memory, CPU, etc.) will be used, but the picture will be sharper
and resolution with respect to neural data will be higher (e.g., fewer samples per frame).
o
Trigger method -
This determines what drives the camera’s shutter to capture frames and
how accurately frames are synced to neural data. The following options are available:
Isochronous (software) -
The camera drives itself and synchronization with
neural data is estimated in the software based on network packet times. This
method must handle for variable network latencies and multiple timers so it is the
least accurate, but is always available. The frame rate may be specified for this
method.
External -
This option is a hardware synchronization that allows for non-
Blackrock equipment to drive the camera. It includes the additional option
Trigger Polarity
which allows selection of whether the shutter triggers on a high
or low voltage. With this method any synchronization with video data must be
handled by the non-Blackrock equipment as it determines when a frame is taken.
The frame rate must also be specified.
NSP Digital Out -
This option is a hardware synchronization method for use with
the NSP. Using the supplied hardware synchronization cable the NSP will drive
the camera from one of the digital output ports on the NSP with active high
polarity. This option allows selection of any of the four digital output ports using
the
Digital Output Channel
dropdown menu. This method is far more accurate in
synchronizing video and neural data as the number of timers is reduced and
network latency can be ignored. This method does not require setting the frame
rate.
CerePlex™ -
This is another hardware synchronization option that is for use with
the CerePlex™ Direct. It includes the additional option of setting whether the
camera is triggered on high or low voltage with
Trigger Polarity
. Like the other
hardware synchronization options it is far more accurate for matching up video
and neural data. This method does not require setting the frame rate.
Camera:
OptiTrack
- This selects the OptiTrack V100:R2 infrared camera that can be supplied
with NeuroMotive™. The following options can be set for it:
o
Embedded statistics -
This shows or hides various statistics in the video frame itself.
Currently only two statistics display: Time Elapsed and Frame Number.
o
Capture frame rate (fps) -
Sets the frame rate of the camera. The higher the rate, the more
resources (time, memory, CPU, etc.) will be used, but the picture will be sharper and
resolution with respect to neural data will be higher (e.g., fewer samples per frame). Note:
the OptiTrack camera may go up to 100fps and requires a hardware sync (non-isochronous)
and selecting ‘100’ or manually enter ‘100’ into the
Capture frame rate (fps)
field.
o
Trigger method -
This determines what drives the camera’s shutter to capture frames and
how accurately frames are synced to neural data. The following options are available:
Isochronous (software) -
The camera drives itself and synchronization with
neural data is estimated in the software based on network packet times. This
method must handle for variable network latencies and multiple timers so it is the
least accurate, but is always available. The frame rate may be specified for this
method.