IS-1500 User Guide
Thales Visionix, Inc.
MNL- 0024 (D)
Page 44 of 59
5.3.3
InertiaCam Exposure Settings
The InertiaCam is set by default to use auto-exposure with a range of 100 to 15,000µs. In specific use scenarios, the auto-exposure
range may need to be adjusted, or manual exposure set by default. The exposure should not exceed 15,000µs. If it appears that
exposure over 15,000µs is required, the physical lighting in the tracking area should be increased instead. If the auto-exposure changes
appropriately but is consistently too dark or too light, the luminosity should be changed.
A. To change the auto-exposure range, follow the steps below.
1.
If they are currently running, close the sfHub and sfStudio programs.
2.
Open the sfHub.info file.
3.
Under the InertiaCam section, find the Master subsection and the autoExposureMin, autoExposureMax, or autoExpsureLum
variables.
InertiaCam
{
Master
{
ncDataDiv 5
; NavChip data rate divisor (rate = 1000/divisor in Hz)
frameInterval 50000
; Frame interval in microseconds.
manualExposure 2500
; Initial manual exposure
autoExposure 1
; (1) Enable (0) Disable
autoExposureMin
100
; Microseconds.
autoExposureMax
15000
; Microseconds.
autoExpsureLum
1000
; Auto exposure target luminosity
}
}
4.
Change the values to reflect the desired minimum and maximum auto-exposure values in microseconds. The example below
shows a change to a narrower auto-exposure range, from 2000 to 12,500µs, and the target luminosity is 2000.
autoExposure 1
; (1) Enable (0) Disable
autoExposureMin
2000
; Microseconds.
autoExposureMax
12500
; Microseconds.
autoExpsureLum
2000
; Auto exposure target luminosity
5.
Once this change has been made, save the file.
B. Switching to a manual exposure requires disabling the auto-exposure and setting a value for the manual exposure. To do this,
follow the steps below.
1.
If they are currently running, close the sfHub and sfStudio programs.
2.
Open the sfHub.info file.
3.
Under the InertiaCam section, find the Master subsection and the autoExposureMin and autoExposureMax variables.
InertiaCam
{
Master
{
ncDataDiv 5
; NavChip data rate divisor (rate = 1000/divisor in Hz)
frameInterval 50000
; Frame interval in microseconds.
manualExposure
2500
; Initial manual exposure
autoExposure
1
; (1) Enable (0) Disable
autoExposureMin 100
; Microseconds.
autoExposureMax 15000
; Microseconds.
autoExpsureLum 1000
; Auto exposure target luminosity
illuminator 1
; IR illuminator enable
}
}