Allied International AVT OSCAR V2.4.0 Manual Do Utilizador
Description of the data path
OSCAR Technical Manual V2.4.0
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Sub-sampling
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.
color) while being read out from the CCD chip.
Which Oscar models have sub-sampling?
All Oscar models have this feature.
Description of sub-sampling
Sub-sampling is used primarily for the following reasons:
•
A reduction in the number of pixels and thus the amount of data while
retaining the original image area angle
retaining the original image area angle
•
Switch the sensor to progressive mode rather than frame readout mode.
•
Increase in the frame rate.
The sub-sampling mode of Oscar F-320C and Oscar F-810C is always H+V sub-
sampling mode. Oscar F-510C offers two additional special F_7 modes, with
horizontal full resolution, but vertically read out progressive (thus sub-sam-
pled). This is advantageous for applications relying on highest horizontal
resolution.
sampling mode. Oscar F-510C offers two additional special F_7 modes, with
horizontal full resolution, but vertically read out progressive (thus sub-sam-
pled). This is advantageous for applications relying on highest horizontal
resolution.
Use progressive modes to activate sub-sampling. The principal sub-sampling
pattern is shown below. Please note that various sensors skip more than two
rows in the sub-sampling mode. This is detailed in Chapter
pattern is shown below. Please note that various sensors skip more than two
rows in the sub-sampling mode. This is detailed in Chapter