According to one embodiment, a travel speed calculation device includes an acquisition unit, an inter-vehicle distance calculator, a relative speed calculator, a travel speed calculator, and a determination unit. The travel speed calculator calculates a travel speed of another vehicle based on a travel speed of a probe vehicle and a relative speed of another vehicle relative to the probe vehicle. The determination unit determines change of another vehicle based on a frame at a former time and a frame at a latter time, and inhibits the travel speed calculator from calculating a travel speed of another vehicle based on a relative speed in the case where another vehicle is changed. s 2 01 CAMERA IMAGE ACQUISITION [ IMAGE 5209 PROCESSOR STORAGE 5203 INTER-VEHICLE 208 5206 DISTANCE ANALYSIS UNIT ABSOLUTE SPEED RELATIVE SPEED CALCULATOR CALCULATOR __5_204 VEHICLE CHANGE 207 DETERMINATION VEHICLE SPEED
Travel speed calculation device and travel speed calculation method
2021-01-21
Patent
Electronic Resource
English
Travel speed calculation device and travel speed calculation method
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