Pelco TI2550 Manuel D’Utilisation
C1309M-A (9/08)
21
LINEAR PARAMETERS
The linear parameters are made available depending on the mode selected.
The following settings are available for Linear Parameters:
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Contrast: Use the Contrast setting to adjust the contrast across the color palette.
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Increase the Contrast setting to represent midrange temperatures closer to the extremes.
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Decrease the Contrast setting to represent extreme temperatures closer to the midrange.
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Brightness: The Brightness setting is only available when the AGC Mode is set to Manual. If used, this setting must be constantly
adjusted to compensate for changes in the brightness of a scene.
adjusted to compensate for changes in the brightness of a scene.
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Brightness Bias: Use the Brightness Bias setting to adjust how the color palette represents the temperature range of the image.
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Increase the Brightness Bias setting to push the color palette to a warmer range of temperatures: warmer temperatures appear as hot,
cooler temperatures appear as warmer, and cold temperatures appear as cool.
cooler temperatures appear as warmer, and cold temperatures appear as cool.
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Decrease the Brightness Bias setting to push the color palette to a cooler range of temperatures: cooler temperatures appear as cold,
warmer temperatures appear as cooler, and hot temperatures appear as warm.
warmer temperatures appear as cooler, and hot temperatures appear as warm.
AGC PARAMETERS
The AGC Parameters are only available when AGC Mode is set to Automatic.
The following settings are available for AGC Parameters:
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Plateau Value: Use the Plateau Value setting to limit the camera's contrast algorithm. The default for this setting is 250. In scenes with
high dynamic range, you may want to turn this setting down to ±100.
high dynamic range, you may want to turn this setting down to ±100.
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ITT Mean: Use the Intensity Transfer Table (ITT) Mean to adjust the display brightness. The default for this setting is 140. Adjusting this
setting may limit the camera's dynamic range ability.
setting may limit the camera's dynamic range ability.
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Max Gain: Use the Max Gain setting to adjust the display contrast. The factory default setting is 8. In most cases this setting should not be
adjusted lower than 4 or higher than 16.
adjusted lower than 4 or higher than 16.
REGION OF INTEREST
You can set a Region of Interest (ROI) or a rectangle of pixels from the image that the AGC algorithm will use for its calculations. The ROI can be
set for either the entire frame size or some smaller portion of the image.
set for either the entire frame size or some smaller portion of the image.
The settings use an X,Y coordinate system with (0,0) at the center of the sensor array and specify two corners of the ROI rectangle. The upper
two numbers labeled (Left,Top) are the pixel coordinates of the upper-left corner of the ROI rectangle. The lower two numbers labeled
(Right,Bottom) define the lower-right corner of the ROI rectangle.
two numbers labeled (Left,Top) are the pixel coordinates of the upper-left corner of the ROI rectangle. The lower two numbers labeled
(Right,Bottom) define the lower-right corner of the ROI rectangle.