초록 ▼

An image of the object remains in the field of view of the camera, thereby generating a continuously changing image signal. The images are captured and digitized in a continual sequence S of discrete images of the scenes at a respective sequence T of points in time. During this capture sequence, a f

An image of the object remains in the field of view of the camera, thereby generating a continuously changing image signal. The images are captured and digitized in a continual sequence S of discrete images of the scenes at a respective sequence T of points in time. During this capture sequence, a first plurality of reference signals are established corresponding to a plurality of respective captured images. In this manner, a plurality of reference images are generated on-line, during movement of the object or cameras. A second plurality of detected signals corresponding to a second plurality of captured images, are individually correlated with the respective next previous reference signal of the sequence, thereby establishing a relative position of the object or camera, for each detected signal. The absolute position of the camera or object, is determined by accumulating these relative positions.

대표청구항 ▼

[ We claim:] [1.] A method for operating a computer vision system with associated moving camera to track the position of the camera relative to a plurality of spaced apart stationary objects of known size, comprising:focusing the camera having a field of view which defines a scene, so that at least

[ We claim:] [1.] A method for operating a computer vision system with associated moving camera to track the position of the camera relative to a plurality of spaced apart stationary objects of known size, comprising:focusing the camera having a field of view which defines a scene, so that at least one of said objects remains in the field of view as the camera moves in time, thereby generating a continuously changing image signal;delivering the continuous image signal to said computer vision system;in said computer vision system, capturing and digitizing a continual sequence S of discrete images of the scene with object, at a respective sequence T of points in time;storing a first set S1 of discrete images S1,i (where i=1,2, . . . N) from said sequence S corresponding to a first set T1 of points from time sequence T;creating a digital filter H1 from discrete image S1,1;comparing each of the other discrete images S1,2; S1,3; . . . S1,N of set S1 with said filter H1;from said comparison, determining the change in position of the object in the scene, relative to the position of the object at the point in time corresponding to the capture of image S1,1;recording the position of the object as determined from the first set S1 of discrete images;storing a second set S2 of discrete images S2,i (where i=1,2, . . . N) from said sequence S corresponding to a second set T2 of time points following the first set T1 of time points;creating a digital filter H2 from discrete image S2,1;comparing each of the other discrete images S2,2; S2,3; . . . S2,N of set S2 with said filter H2from said comparison, determining the change in position of the object in the scene, relative to the position of the object at the point in time corresponding to the capture of image S2,1;recording the position of the object as determined from the second set S2 of discrete images; andrepeating the foregoing for at least one additional set S3 of said sequence S and set T3 of said sequence T.