Manual Datafox Evo 4.6 FleKey
Page 165
Date: 14.09.2021 V 04.03.17.XX
Above sample
Fehler! Verweisquelle konnte nicht gefunden werden.
shows that 73 images
ave been recorded. The camera collected a total of 63 images since the most recent terminal restart
– of which 60 images were created using the randomized approach. The randomized approach was
invoked 120 times at a setup-defined sample percentage of 50%. The camera generates images
with a resolution of 160 x 120 pixels in PNG format.
5.14.8.
Camera frame rates
Recording and retrieving image data from the camera takes a certain amount of time
– this results in
a certain time lag when recording images. The following table
Fehler! Verweisquelle konnte nicht
efunden werden.
shows the frame rate that can be achieved
– depending on the resolution. The
time estimates do not differ between storage on an SD card or using the internal flash memory.
Table 2 Camera frame rates
Possible resolutions (in pixels x pixels)
160 x 120
176 x 144
320 x 240
Picture time
3 Seconds
3 Seconds
8 Seconds
Using simple picture recording (see 5.14.1.1) in combination with frequent device operation may ex-
ceed the image recording rate as defined above. In this case, the transfere of the picture taken first
is completed and the subsequent picture that would be recording during this process is skipped.
Hint:
If a quick sequence of pictures to be taken is to be expected and a picture of every person
is required, you can try to gap the time required by showing a text message (see
5.14.1.1). This, however, does not guarantee that all operations lead to taking a picture.
