FLIR TCX series, Инструкция по эксплуатации

Страница: 27 / 150

Setup 6
AGC Filter (0 to 255)
The AGC filter is used to adjust how quickly the AGC algorithm reacts to a change in a
scene. If the AGC filter is set to a low value, when a hot object enters the field of view,
the AGC will adjust more slowly, resulting in a gradual transition. A setting of 255 causes
an immediate update, a setting of 1 causes the slowest update, and a setting of 0 indi-
cates no updates to AGC.
AGC Max Gain (0 to 255)
For scenes with high dynamic range (a wide 14–bit histogram), the maximum gain pa-
rameter has little effect. For a very bland scene ( a narrow 14–bit histogram), a higher
setting of AGC Max Gain will significantly increase the contrast of the resulting image.
AGC Plateau (0 to 255)
When the AGC Plateau value is set to a high value, more shades of gray are mapped to
areas of similar temperature. When the AGC Plateau level value is set to a low value, the
mapping is more linear. For example, an image comprised of 60% sky (very cold) will de-
vote 60% of the available shades to the sky, leaving only 40% for the remainder of the
image.
FFC
Click FFC to manually initiate a flat field correction (FFC), updating the pixel calibration
to improve the image quality. The FFC is also performed automatically during changes in
temperature.
6.1.2 Region of Interest (ROI)
Use the thermal region of interest (ROI) to select only the portion of the scene that the
automatic gain control (AGC) will use to optimize the image. The region is automatically
adjusted for zoom. You can select a preset ROI or create a custom ROI. The custom ROI
Type provides the ability to setup a rectangular region of any size and move it to any lo-
cation in the image.
To set up a custom ROI region:
1. Under ROI Type , select Custom .
2. Click and drag a corner of the yellow box to resize the ROI region.
#LX400062; r.30885/35920; en-US 19