10
Piranha4 8K Camera Color User's Manual
03-032-20156-00
Teledyne DALSA
Image Sensor
The Piranha4 bilinear color camera is based on Teledyne DALSA’s bilinear CMOS sensor and designed such that
the first line of this two line sensor has red (R) and blue (B) alternating pixels, while the second line has all green
(G) pixels. The sensor has a 100% fill factor with zero gap between the two lines, which minimizes any artefact due
to spatial correction. The G channel can be used as a monochrome output.
Figure 3: Piranha4 Color Bilinear Sensor Block Diagram
Note:
The interpolation procedure does not work on the first and last pixels. As a result, the number of effective full
color (RGB) pixels is reduced by 2 to 8190 pixels.
Sensor Shift Direction Example
When in high sensitivity mode, you can select either forward or reverse sensor direction. See
for details. Selectable direction accommodates object direction change on a web and
allows you to mount the camera ―upside down‖.
Note
: The example here assumes the use of a lens (which inverts the image).
Figure 4: Object Movement and Camera Direction Example, with a Lens
Red
Pixel 1
Green
Pixel 1
Blue
Pixel 2
Green
Pixel 2
Red
Pixel 3
Green
Pixel 3
Blue
Pixel 4
Green
Pixel 4
Red
Pixel 5
Green
Pixel 5
Blue
Pixel 6
Green
Pixel 6
Red
Pixel 7
Green
Pixel 7
Blue
Pixel 8
Green
Pixel 8
Red
Pixel
8191
Green
Pixel
8191
Blue
Pixel
8192
Green
Pixel
8192
Top Line
Bottom Line