Basler A640F, Руководство пользователя

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Basic Operation & Standard Features
3-20
BASLER A640
f
DRAFT
Table 3-1 shows some typical gain settings and the amplification that will result:
3.3.2 Setting the Brightness
The camera’s brightness is determined by the setting in the Value field of the Brightness control
register (see page
4-28 ). The brightness setting can be programmed on a decimal scale that
ranges from 0 to 255 (0x000 to 0x0FF).
With a camera set for mono 8, raw 8, or YUV 4:2:2 output, a brightness setting of 16 (decimal) will
result in an offset of 0 in the digital values output for the pixels. An increase of 16 (decimal) in the
brightness setting will result in a positive offset of 1 in the digital values output for the pixels. For
example, a brightness setting of around 32 (16 + 16, decimal) would be required to reach a
positive offset of 1. A brightness setting of around 48 (16 + 16 + 16, decimal) would be required
to reach a positive offset of 2, and so on.
With a camera set for mono 16 or raw 16 output, a brightness setting of around 16 (decimal) will
result in an offset of 0 in the digital values output for the pixels. Each increase of 1 (decimal) in the
brightness setting will result in a positive offset of 1 in the digital values output for the pixels.
Decimal Number (DN) Hexadecimal dB Factor
350 0x15E 0 X1
484 0x1E4 6 X2
630 0x276 12 X4
800 0x320 18 X8
969 0x3C9 24 X16
1023 0x3FF 25.9 X20
Table 3-1: Examples of Gain Settings in dB