FLIR ADK
Getting Sta rt e d
The information contained herein does not contain technology as
defined by EAR,15 CFR772, is publicly available, and therefore
not subject to EAR.
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5.2 Progressive Video Output
The Boson thermal camera has a rolling shutter effect that is always present, but not
always noticeable. This Boson is not a “snapshot” or “global shutter” camera. Each pixel is
read individually at a slightly different time than the pixel to the left or right of it. Since the
camera samples the top left pixel first, and the readout is row by row, an object that is
moving very quickly may appear distorted in the image output. Approximately 32µs
separate each line. This is most evident when vertically oriented objects are moving rapidly
horizontally.
Figure 5. ADK Rolling Shutter
5.3 ADK Video Processing Pipeline
There is some latency in the FLIR ADK video pipeline. The camera reads the focal plane
array (FPA), processes the image, and sends it to a parallel CMOS output. The personality
board, providing either GMSL or USB output, is connected to the CMOS output. The delay
from reading to first pixel from the FPA to when it is available on the CMOS output is 18ms.
There will be additional delays if you are colorizing the image or using digital zoom.
Table 3: Timing of a frame from the ADK with average OFF.
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