Atmel CAMELIA 8M Manual de usuario descargar pdf (Pagina 10)

CAMELIA M1 8M LVDS and CameraLink

Camera

5319C–IMAGE–02/04

Gain and Offset The video gain and offset signal processing can be adjusted by setting the gain and

offset via the serial communication:

• Gain adjusted from -6.1 to 27 dB: G = code 0 to 941

• Nominal gain (factory configuration) is 0 dB: G = code 173

• Offset adjusted from 0 to 255 LSB: O = code 0 to 255

• Gain is applied to the video signal before the addition of offset

Over-illumination Control Over-illumination control can be activated or inhibited (set via the serial communication):

• A = 0 - OFF: this position is recommended if over-illumination control is not required

for the application.

• A = 1- ON: control is activated and is effective at up to 8 times the sensor’s

saturation level.

It is important to know that this feature is optimum at an exposure time of 100 ms. Its

efficiency is decreased when the exposure time is reduced.

Test Pattern In normal mode, the digital video signal from the CCD sensor is available at the LVDS

output interface.

For test purposes a fixed digital pattern is generated and can be made available instead

of the video signal at the LVDS output interface.

The digital pattern is ramped up from 0 to 2298 LSB code (line width); each line pre-

sents the same pattern:

This is useful in validating the connection to the acquisition system before adjustment

operations relative to the image capture.

Selection is set by the Test Pattern Generation command:

• CCD sensor : M = 0

• Test Pattern : M = 1

Median Filter A median filter can be applied to sensor signals to remove 1 x 1 defect pixels or 1 pixel

width columns thus avoiding subsequent software processing. This filter produces a

smoothing effect on the image.

• Median filter OFF: M = 0

• Median filter ON: M = 2

Pixel Output Format Digital output pixels can be set to 8 or 12 bits:

• 12-bit width: M = 0, 1 or 2

• 8-bit width (8 MSB): M = 3

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 36 37

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Atmel CAMELIA 8M Manual de usuario Pagina 10