Method of detecting and measuring a moving object and apparatus therefor, and a recording medium for recording a program for detecting and measuring a moving object
First Claim
Patent Images
1. A moving object detecting and measuring apparatus formed by using a computer, including:
- a first moving object detecting means having a first detecting area defined in the shape of a slit on an input image;
at least one second moving object detecting means having a second detecting area defined in the shape of a slit on the same straight line as the first detecting area, said second detecting area being different in length from said first detecting area; and
moving object measuring means for deciding a length of said moving object passing through said slit in a longitudinal direction of said slit according to output of said first and second moving object detecting means wherein coordinates, on said image, of a start point and an end point of said first and second detecting areas can be set by an input device.
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Abstract
There are provided a plurality of units for detecting a moving object in an image from changes of an image structure in a monitor area defined in a linear strip on a single straight line consisting of a base line and its partitions, and a height of a moving object is detected and measured easily and accurately from a code obtained from detection results obtained when the image structure is at its maximum variation.
27 Citations
17 Claims
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1. A moving object detecting and measuring apparatus formed by using a computer, including:
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a first moving object detecting means having a first detecting area defined in the shape of a slit on an input image;
at least one second moving object detecting means having a second detecting area defined in the shape of a slit on the same straight line as the first detecting area, said second detecting area being different in length from said first detecting area; and
moving object measuring means for deciding a length of said moving object passing through said slit in a longitudinal direction of said slit according to output of said first and second moving object detecting means wherein coordinates, on said image, of a start point and an end point of said first and second detecting areas can be set by an input device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for detecting and measuring a moving object by using a computer, comprising the steps of:
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defining a first detection area in a shape of slit on an input image;
defining a second detection area in a shape of a slit which is different in length from said first detection area on a same straight line as said first detection area;
storing a first value when the moving object has entered the first and the second detection areas and storing a second value when the moving object has not entered the first and the second detection areas;
generating a measurement code according to respective values stored; and
deciding a length, in a longitudinal direction of said slit, of a moving object passing through said slit according to output of said first and second detection areas. - View Dependent Claims (9)
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10. A program for executing detecting and measuring a moving object by a computer, comprising the steps of:
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defining a first detection area in a shape of a slit on an input image;
defining a second detection area in a shape of a slit located on a same straight line as said first detection area, said second detection having a length different from said first detection area;
deciding a length, in a longitudinal direction of said slit, of a moving object passing through said slit according to output of said first and second detection areas; and
generating measurement codes for the first and second object detection areas by taking a first value when a moving object enters the first detecting area and the second detecting areas and a second value when the moving object does not enter the first detecting area and the second detecting area.
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11. A moving object detecting and measuring apparatus formed by using a computer comprising:
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a first moving object detector having a first detecting area defined in the shape of a slit on an input image;
at least one second moving object detector having a second detecting area defined in the shape of a slit on the same straight line as the first detecting area, the second detecting area being different in length from the first detecting area; and
a moving object measurer for determining a length of the moving object passing through the slit in a longitudinal direction of the slit according to output of the first and second moving object detectors wherein coordinates, on the image, of a start point and an end point of the first and second detecting areas can be set by an input device. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification