chromasens allPIXA, Руководство пользователя

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CD40047_R04_allPIXA_User-Manual.docx 150

Vid BrightnessOut (x,y) Pixel-normalized image after the Vid Brightness correction
(0…2047 in 10Bit area)

Gain
Additionally adjustable “Contrast” for this color separation
(0…1…2.0)

(x, y) Number of pixels within a line or column

VidContrastOut (x,y) Output of this step (area
0 … 1023)
NOTE
Calculation is performed in the following order (see section 4.6.1;
“
Figure 10:
Digital process of the allPIXA camera (block diagram)
”:
1. Brightness
2. Contrast
11.7 Camera arrangement
Set RGB line distance
Name
Name
Set RGB line distance
Function
Delays the line output for the two other lines to match the shift by different positions
on the sensor which is also called “Spatial correction”.
Channels
All
Unit
Float
Step
0,001
Linear
Dependency None
Notes
The value “0” switches this function off.
For cameras up to 4k the line delay can be set up to 6 lines, for cameras with sensor
length more than 4k it is limited to 4 lines.
Camera: Value CST
Unit In 1/1 lines
Lower limit
All 0.0
Upper limit
> 4,096 pixel 4.0
Upper limit <=4,096 pixel 6.0
The trilinear lines of the allPIXA camera signify that the camera disposes of 3 individual color
lines (RGB) which means that for each image point the accurate information is obtained. The 3
line sensors are physically arranged in different locations, resulting in the acquirement of the
individual color channels to an image of a moving object at different points. For more
information, see section 4.2
“Design of the allPIXA camera line scan sensor” / sensor alignment.
For spatial correction the lines are buffered and the respective lines are re-aligned with a
corresponding correction. The color lines have been delayed by a specific number of lines and,
therefore, the values of R, G and B match each corresponding object point. The allPIXA camera
enables this compensation with up to 4+4 lines spacing according to the camera with sensor
length of more than 4,096 pixels, for sensor length up to 4,096 pixels a spacing of up to 6+6
lines is possible. Correct color images are only generated correctly if the ratio of the optical
resolution is the same as the resolution of transport direction.