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AM-800GE / AB-800GE
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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.
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
B/W
Color
Blemish Compensation Principle
Defective Pixel
Summary of Contents for AB-800GE
Page 97: ...AM 800GE AB 800GE 94 b Image Format Control c Acquisition Control d Digital IO Control...
Page 98: ...AM 800GE AB 800GE 95 e Counter And Timer Control f Event Control...
Page 99: ...AM 800GE AB 800GE 96...
Page 100: ...AM 800GE AB 800GE 97 g Analog Control h LUT Control i Transport Layer Control...
Page 101: ...AM 800GE AB 800GE 98 j User Set Control k Action Control l JAI Custom Control...
Page 102: ...AM 800GE AB 800GE 99...