Precision Security: Integrating Video Surveillance with Surrounding Environment Changes

Figure 5

Examples of learning periods for video recognition in different surveillance scenarios for detailed analysis on the time complexity, under implications of smog (in the blue-rectangles, captured by an android camera), sandstorm (in the green rectangles, captured by a webcam on mobile), blizzard (in those yellow rectangles with videos collected from a drone), and truck exhaust (in the red rectangles with videos collected by a driving recorder).