Download AM/AB-800GE Manual

AM-800GE / AB-800GE
11.6.2 Balance Ratio Auto
The following modes are available.
OFF
: Manual adjustment
Once
: One-time auto white balance
Continuous : Always tracking
11.7. Blemish compensation
The AM-800GE and AB-800GE have a blemish compensation circuit. This function
compensates blemishes on the CCD sensor (typically pixels with extremely high
response or extremely low response). This applies to both monochrome and color
versions. Pixels that fulfill the blemish criteria can be compensated by adjacent pixels
on both columns and, in the case of the AB-800GE, the defective pixels can be
compensated by the same Bayer color pixels in the nearest adjacent columns on both
sides. The number of pixels that can be compensated is up to 256 pixels.
The built-in compensation circuit for the AM-800GE and AB-800GE uses compensation
data collected in the factory and can be turned ON or OFF. The default setting is OFF.
Users can recalibrate the high response blemishes (White) and store for use. However,
the low response (Black) can be used only with the factory default setting.
Defective Pixel
Blemish Compensation Principle
B/W
Color
Fig. 55 Blemish compensation
Note: If defective pixels are found consecutively in the horizontal direction, the
blemish compensation circuit does not work.
11.8. LUT
This function can be used to convert the input to the desired output characteristics.
The Look-Up Table (LUT) has 512 points for setup and each point has a 9-bit gain
value. The output level can be created by multiplying the gain data by the input level.
In the AB-800GE, the same LUT characteristic is applied independent of the color
value.
If input data is not in the LUT, the weighted mean average data from upper point and
the lower point are used.
Video output = Video input x LUT value
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