Prosilica GT Technical Manual V2.4.1
74
Resolution and ROI frame rates
Resolution and ROI frame rates
This section charts the resulting frame rate from changing sensor height from
full image to a single line.
Unless otherwise noted, sensors do not give an increase in readout speed with
a reduction in width. However, in cases where a camera is limited by frame rate
due to bandwidth restrictions, a reduction in width will give a frame rate
increase. Cameras with a “burst mode” frame rate (see chapter
page 14) are able to output more data than the maximum available bandwidth
(124 MB/s), and will see a frame rate increase with a reduction in width.
Note
•
Data was generated using
StreamBytesPerSecond = 124
MB/s
(full bandwidth) and an 8-bit pixel format. Frame
rates may be lower if using network hardware incapable
of 124 MB/s.
•
For maximum speed advantage on quad-tap CCD sensors,
ROIs are center image
, where feature
OffsetY
= (full
sensor height – ROI height)/2
.
•
There is no frame rate increase with reduced width.
•
BinningVertical
is horizontal row summing on CCD
before readout. The frame rate for an ROI at the same
effective height as binning will be slower because the CCD
still needs to read out the “fast readout rows” in ROI
mode.
