Instruction manual

Guppy PRO Technical ManualV4.1.0
106
Description of the data path
Sub-sampling (only F-503B/C and CCD cameras
b/w)
What is sub-sampling?
Definition Sub-sampling is the process of skipping neighboring pixels (with the same
color) while being read out from the CCD chip.
Which Guppy PRO models have sub-sampling?
• CMOS Guppy PRO cameras (F-503B/C) (b/w and color cameras) have sub-
sampling.
• CCD Guppy PRO cameras: only b/w cameras have sub-sampling (only 2x
horizontal/vertical/H+V)
Description of sub-sampling
Sub-sampling is used primarily for the following reason:
• A reduction in the number of pixels and thus the amount of data while
retaining the original image area angle and image brightness
Similar to binning mode the cameras support horizontal, vertical and h+v sub-
sampling mode.
Format_7 Mode_4 By default and without further remapping use Format_7 Mode_4 for
• Guppy PRO F-503B: 2 out of 4 horizontal sub-sampling
• Guppy PRO F-503C: 2 out of 4 horizontal sub-sampling
The different sub-sampling patterns are shown below.
Figure 50: Horizontal sub-sampling 2 out of 4 (b/w)
Figure 51: Horizontal sub-sampling 2 out of 8 (b/w)
2 out of 4
2 out of 8