Modulation Characteristics of Coherent Motion Field for the Moving Vehicles
Danping Liu, Hao Chen, Song Liu, Lidan Fu, Binchun Lu, Lin Meng, Jiaxuan Chen, Wen Li · 2020
The method based on the coherent motion field is an important idea to achieve the rapid vehicular collision detection. In this paper, a novel model of coherent motion field is established by using the modulation concept of communication principle. The ideal coherent motion field can be achieved by modulating the amplitude and position of the generalized bell-type difference function with the speed field from Farneback's method. We propose the area difference to characterize the symmetry of positive and negative areas of coherent motion field, and the area difference stably presents the modulation characteristics of normal frames and collision frames, which is of great significance to the rapid detection of the traffic accidents in a wide range of roads.