Object tracking apparatus
First Claim
1. 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.
1 Assignment
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Accused Products
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.
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Citations
34 Claims
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1. An object tracking apparatus for tracking a target object within a designated region, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An object tracking apparatus for tracking a target object within designated region, comprising:
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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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An object tracking apparatus for tracking a target object within a designated region, comprising:
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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. - View Dependent Claims (20, 21)
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22. An object tracking apparatus for tracking a target object within a designated region, comprising:
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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 controls the zooming of said photographing means based on the change of width of the locus of said time-space image.
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23. An object tracking apparatus for tracking a target object within a designated region, comprising:
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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; and hue detecting means for detecting the hue of said video signal, wherein said histogram processing means calculates the histogram of said hue.
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24. An object tracking apparatus for tracking a target object within a designated region, comprising:
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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 judges crossing of target objects or disappearance from the screen, based on the locus of said time-space image. - View Dependent Claims (25)
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26. An object tracking apparatus for tracking a target object within a designated region, comprising:
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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; control means for controlling said photographing means based on the locus of said time-space image; hue detecting means for detecting the hue of said video signal; and a color filter for filtering for said hue, wherein said time-space image processing means calculates said time-space image with respect to the colors until upper n-th of said color filter output.
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27. An object tracking apparatus for tracking a target object within designated region, comprising:
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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. - View Dependent Claims (28, 29)
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30. An object tracking apparatus for tracking a target object within designated region, comprising:
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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 controls the size of said designating region on the basis of change of width of the locus of said time-space image.
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31. An object tracking apparatus for tracking a target object within designated region, comprising:
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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; control means for controlling said designating region based on the locus of said time-space image; and hue detecting means for detecting the hue of said video signal, wherein said histogram processing means calculates the histogram of said hue.
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32. An object tracking apparatus for tracking a target object within designated region, comprising:
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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 judges crossing of target objects and disappearance from the screen, based on the locus of said time-space image. - View Dependent Claims (33)
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34. An object tracking apparatus for tracking a target object within designated region, comprising:
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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; control means for controlling said designating region based on the locus of said time-space image; hue detecting means for detecting the hue of said video signal; and a color filter for filtering for said hue, wherein said time-space image processing means calculates said time-space image with respect to colors until upper n-th of said color filter output.
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Specification