Automatic Traffic Data Collection under Varying Lighting and Temperature Conditions in Multimodal Environments: Thermal versus Visible Spectrum Video-Based Systems
Table 3
Summary of temperature test cases.
(a)
Pavement temp.
Ambient temp.
Sample size
Season
Road type
Vehicle speed
0°C–5°C
~0°C
100 vehicles
Winter
Segment
20°C–25°C
~20°C
Summer
Segment
25°C–30°C
~20°C
Summer
Segment
30°C–35°C
~20°C
Summer
Segment
35°C–40°C
~20°C
Summer
Segment
40°C–45°C
~20°C
Summer
Intersection
Classification
0°C–5°C
~0°C
Every 10 s (150 frames) for 20 minutes
Winter
Intersection
20°C–25°C
~20°C
Summer
25°C–30°C
~20°C
Summer
30°C–35°C
~20°C
Summer
35°C–40°C
~20°C
Summer
40°C–45°C
~20°C
Summer
45°C–50°C
~20°C
Summer
(b) Sample camera views under different temperature
