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en | System Overview
AVIOTEC IP starlight 8000
2020.08 | 01 | F.01U.391.015
Operation and Commissioning Manual
Bosch Sicherheitssysteme GmbH
σ
BG
σ
S
Figure 3.1:
Smoke density definition
The effect of contrast reduction by smoke is described by the formula
with the contrast values for a temporal average image with smoke σ
s
and the contrast for the
background σ
bg
.
Exemplary images for smoke densities are shown in the following table:
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