US 5,473,369 A · Object tracking apparatus

Abstract

An object detecting and tracking apparatus detects a tracking target object from a moving image photographed by a television camera and tracks the same, wherein the movement of the object is detected reliably and with high accuracy to automatically track the target object. When tracking is started after putting the target object in a region designating frame "WAKU" displayed on a screen in such a way as to be variable in size and position, a video signal input from a photographic optical system is Y/C-separated. After that, the target object is specified from a tracking region histogram, and movement vectors are obtained from a color-time-space image, color-time-space differential image, and/or luminance-time-space image thereof, thereby making it possible to more reliably detect even the movement of varied objects as compared with the conventional block matching.

Claims34

Dependent claims

An object tracking apparatus for tracking a target object within a designated region, comprising:

photographing means for photographing an object, and generating a video signal;
histogram processing means for calculating the histogram of said video signal within designated region on the initial screen;
time-space image processing means for obtaining a time-space image with respect to the range having higher frequency of said histogram;
and
control means for controlling said photographing means based on the locus of said time-space image.

2 more elements

An object tracking apparatus for tracking a target object within a designated region, comprising:

photographing means for photographing an object, and generating a video signal;
histogram processing means for calculating the histogram of said video signal within designated region on the initial screen;
time-space image processing means for obtaining a time-space image with respect to the range having higher frequency of said histogram;
and
control means for controlling said photographing means based on the locus of said time-space image;
wherein said control means detects the first moving amount based on the locus of said time-space image, and controls said photographing means in the photographing direction on the basis of said first moving amount.

3 more elements

An object tracking apparatus for tracking a target object within designated region, comprising:

histogram processing means for calculating the histogram of a video signal within designated region on the initial screen;
time-space image processing means for obtaining a time-space image with respect to the range having higher frequency in said histogram;
and
control means for controlling said designating region based on the locus of said time-space image;
wherein said control means detects the first moving amount based on the locus of said time-space image, and moves said designating region corresponding to said first moving amount.

2 more elements

Dependencies are inferred from the claim text.

Object tracking apparatus

Life of this patent

Object tracking apparatus

Life of this patent

Abstract

Claims34