METHOD AND SYSTEM FOR PREDICTING THE IMPACT BETWEEN A VEHICLE AND A PEDESTRIAN
0 Assignments
0 Petitions
Accused Products
Abstract
A method predicting impact between a vehicle and a detected moving pedestrian, generating N particles representing trajectory pairs of the vehicle and the pedestrian according to a Monte Carlo method, and then evaluating the outcome of each particle so that the space of states of each particle is split into areas of varying significance depending on its present kinematic state and so that in the case of a predicted non-impact, the relationship between the significance of the particle at the present instant and its significance at the preceding instant is calculated to decide, in a case of a particle whose significance increases, to reduce it to an integer greater than 1, of particles each affected by a new weight and, in a case of a particle whose significance decreases, randomly eliminating it according to the significance relationship, its probability to endure being equal to the relationship of significance, the estimation of the probability of the predicted impact being obtained by statistics on the outcome of N particles.
-
Citations
20 Claims
-
1-10. -10. (canceled)
-
11. A method of predicting impact between a vehicle and a detected moving pedestrian, comprising:
-
generating N particles representing pairs of vehicle and pedestrian trajectories, having as an origin a situation whose impact characteristics are to be evaluated, based on a vehicle model and a pedestrian model with plural discrete states, of initial positions of the vehicle and of the pedestrian and of information about their respective kinematic states; and evaluating an outcome of each particle, wherein the particle state space is sliced into zones of variable significance, the significance being defined by a numerical value directly related to interest accorded to each particle and dependent on its present kinematic state, and wherein in an event of predicted non-impact, the method further calculates the ratio of the significance of the particle at a present instant to its significance at a previous instant so as to decide, in a case of a particle whose significance is increasing, to scale it down into an integer number n, greater than 1, of particles each assigned a new weight and, in a case of a particle whose significance decreases, to eliminate it as a function of the significance ratio, its probability of survival being equal to the significance ratio, estimation of the probability of impact and characteristics of the predicted impact being obtained thereafter by application of statistics on outcomes of the set of N particles. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification