Microscan EZ Match Imager Manual do Utilizador descarregar pdf (Página 286)

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EZ Match User Manual

Camera Settings

Camera parameters are typically obtained during the calibration process, and do not

necessarily need to be modified directly.

Shutter Speed

Gain

Usage: Faster shutter speeds reduce blurring in faster applications. Slower

shutter speeds are useful in slower applications and lower contrast

applications.

Definition: Sets the exposure or integration time for the image sensor pixels. The

shutter speed setting in relation to the speed of the object is critical. If a

slow shutter speed is selected to capture fast-moving objects, blurring or

smearing of the image will occur. As shutter speed is increased, more

light and gain become necessary, because the pixels’ exposure time has

decreased.

Serial Cmd: <K541,shutter speed,gain>

Default: 45

Options: 15 to 12,500

Usage: Can be used to adjust pixel grayscale values for readability.

Definition: Sets the gain value for the image sensor. This setting can be configured

through calibration, which is the recommended method. A higher gain

value will increase the brightness of the image, but the visual noise

reduction performance of the system is reduced. Before configuring gain

settings, the desired shutter speed should already be set and the gain

should be configured to optimize the shutter speed setting.

Each of the image sensor’s colors has a separate gain setting, and the

White Balance adjustment provides gain offsets for color channels R

(red), G (green), and B (blue) to provide consistent white across the

image. Adjustments to both the R and B channels are usually required.

The gain value that is set here is the base gain value for all colors. If a

color requires additional gain to provide white balance, the offset is

added to this gain value. However, when in the analog gain range, the

gain + offset cannot exceed 42, and when in the digital gain range, the

gain + offset cannot exceed 48. For optimal white balance, avoid setting

gain near these values.

Note: Microscan recommends using only the analog gain range (0 to

42). Image quality is degraded within the digital gain range (43 to 48).

Serial Cmd: <K541,shutter speed,gain>

Default: 30

Options: Analog gain: 0 to 42 Digital gain: 43 to 48

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Microscan EZ Match Imager Manual do Utilizador Página 286