Apparatus and method for detecting a velocity of a moving object
First Claim
1. An apparatus for detecting a velocity of a moving object, comprising:
- photographing means for photographing a predetermined area in which said object moves, at intervals of time T;
projecting means for projecting brightness information of each pixel in an image photographed at said intervals of time T by said photographing means, onto an axis along a moving direction of said object, and for accumulating each brightness value on said axis to generate one-dimensional projected information;
storage means for storing said one-dimensional projected information from said projecting means; and
detecting means for detecting said velocity of said object moving in said predetermined area by using a plurality of pieces of said one-dimensional projected information stored in said storage means.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for detecting a velocity of a moving object includes: a camera for photographing a predetermined area in which the object moves, at intervals of time T; a projector for projecting brightness information of each pixel in an image photographed at the intervals of time T by the camera, onto a longitudinal axis along a moving direction of the object, and for accumulating each brightness value on the longitudinal axis to generate pieces of one-dimensional projected information; a buffer for storing the pieces of one-dimensional projected information from the camera; and a detector for determining the velocity of the object moving in the predetermined area from the pieces of one-dimensional projected information stored in the buffer. Information to be processed becomes one-dimensional projected information, so even if there are a large number of pieces of one-dimensional projected information, they will be nearly the same as an amount of information of an image photographed at intervals of time T. Accordingly, information can be processed simply and a velocity can be detected accurately.
-
Citations
6 Claims
-
1. An apparatus for detecting a velocity of a moving object, comprising:
-
photographing means for photographing a predetermined area in which said object moves, at intervals of time T; projecting means for projecting brightness information of each pixel in an image photographed at said intervals of time T by said photographing means, onto an axis along a moving direction of said object, and for accumulating each brightness value on said axis to generate one-dimensional projected information; storage means for storing said one-dimensional projected information from said projecting means; and detecting means for detecting said velocity of said object moving in said predetermined area by using a plurality of pieces of said one-dimensional projected information stored in said storage means. - View Dependent Claims (2, 3)
-
-
4. A method for detecting a velocity of a moving object, comprising the steps of:
-
photographing a predetermined area in which said object moves, at intervals of time T; projecting brightness information of each pixel in an image photographed at said intervals of time T, onto an axis along a moving direction of said object, and accumulating each brightness value on said axis to generate one-dimensional projected information; storing one-dimensional projected information; and detecting said velocity of said object moving in said predetermined area by using a plurality of pieces of said one-dimensional projected information stored. - View Dependent Claims (5, 6)
-
Specification