Dalsa Linea Lite GigE Series User Manual page 40

Example 3. Target running faster than example 1, same EXSYNC (trigger) frequency
When the target runs faster, it appears compressed since fewer lines are acquired to image the
target. Adjusting the Line Spatial Correction value can correct for the color artifacts that result
from this compression.
Color Interpolation
When the camera output
the RGB values given the RG or BG pixels available at each horizontal pixel position. That is, the
missing red or blue pixel is generated from the adjacent pixel values (except at the sensor edge
where only one adjacent column of values is available).
Two Color Interpolation
Basic: The missing red or blue pixel information is generated using the neighboring red or
•
blue pixels (left and right / 2).
Enhanced: Missing red-and blue information is interpolated from green pixel variation in
•
addition to neighboring pixels. This removes color fringing artifacts caused by edges
occuring in interpolated pixels.
For example, to interpolate R at BG pixels:
38 • Camera Performance and Features
Figure 27: Line Spacial Correction – Target Too Fast
Pixel Format is RGB8, the camera performs color interpolation to generate
modes are available:
Interpolated
Figure 28: Basic Interpolation
R = G + [(R – G
n n n-1 n-1
= (R + R )/2 + G
n-1 n+1
Interpolated
Figure 29: Enhanced Interpolation
R = 180 R = 120
R = 150
Pixel
) + (R - G )] / 2;
n+1 n+1
- (G + G )/2;
n n-1 n+1
R = 180 R = 120
G = 180 G = 120 G = 100
R = 130
Pixel
Linea Lite GigE Series Camera