Motion detecting method and apparatus
First Claim
1. A motion detection apparatus, comprising:
- an imaging device; and
a control unit operable to;
extract a characteristic region from an image produced by the imaging device;
form a modified region by modifying the characteristic region;
count up to increase a first count value at a first memory address corresponding to a location inside the modified region;
reset a second count value at a second memory address corresponding to a location outside the modified region;
calculate a moving direction and a moving speed of the modified region based on a difference among accumulated count values for adjacent locations; and
calculate a position of the modified region based on count values and locations in the modified region.
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Accused Products
Abstract
A motion detection apparatus. A characteristic region is extracted from an image produced by an imaging device. A modified region is formed by modifying the characteristic region. Voting occurs so as to count up to increase a count value at a memory address corresponding to a location inside the modified region and to reset a count value at a memory address corresponding to a location outside the modified region. At least one of the moving direction and the moving speed of the modified region is calculated based on a difference among accumulated count values for adjacent locations. The position of the modified region can be calculated based on count values and locations in the modified region.
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Citations
13 Claims
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1. A motion detection apparatus, comprising:
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an imaging device; and a control unit operable to; extract a characteristic region from an image produced by the imaging device; form a modified region by modifying the characteristic region; count up to increase a first count value at a first memory address corresponding to a location inside the modified region; reset a second count value at a second memory address corresponding to a location outside the modified region; calculate a moving direction and a moving speed of the modified region based on a difference among accumulated count values for adjacent locations; and calculate a position of the modified region based on count values and locations in the modified region. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A motion detection apparatus, comprising:
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imaging means for forming an image of a scene around a mounting location; characteristic region extracting means for extracting a characteristic region in the image; characteristic region modifying means for forming a modified region by modifying the characteristic region; voting means for increasing a first count value in a first memory address corresponding to a location inside the modified region and for resetting a second count value at a second memory address corresponding to a location outside the modified region; moving speed calculating means for calculating a moving direction and a moving speed of the modified region based on a difference among count values accumulated at adjacent memory addresses by the voting means; and position calculating means for calculating a position of the modified region based on count values and locations in the modified region. - View Dependent Claims (9)
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10. A motion detection method, comprising:
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extracting a characteristic region from an input image; modifying the characteristic region to form a modified region; counting to increase or decrease a first count value at a first memory address corresponding to a location inside the modified region; resetting a second count value at a second memory address corresponding to a location outside the modified region; and calculating at least one of a moving direction and a moving speed of the modified region based on a difference of count values accumulated at memory addresses for two adjacent locations. - View Dependent Claims (11, 12, 13)
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Specification