Object detection apparatus and method
First Claim
1. An object detection apparatus for detecting an object based on input images that are captured sequentially in time by a moving unit, comprising:
- an action generating section for generating an action command to be sent to the moving unit;
a local image processor for calculating flow information for each local area in the input image;
a figure-ground estimating section for estimating an action of the moving unit based on the flow information, calculating a difference between the estimated action and the action command and then determining a certain local area as a figure area when such difference in association with that specific local area exhibits an error larger than a predetermined value,; and
an object presence/absence determining section for determining presence/absence of an object in the figure area.
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Abstract
The object detection apparatus according to the invention detects an object based on input images that are captured sequentially in time in a moving unit. The apparatus generates an action command to be sent to the moving unit, calculates flow information for each local area in the input image, and estimates an action of the moving unit based on the flow information. The apparatus calculates a difference between the estimated action and the action command and then determines a specific local area as a figure area when such difference in association with that specific local area exhibits an error larger than a predetermined value. The apparatus determines presence/absence of an object in the figure area.
25 Citations
20 Claims
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1. An object detection apparatus for detecting an object based on input images that are captured sequentially in time by a moving unit, comprising:
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an action generating section for generating an action command to be sent to the moving unit;
a local image processor for calculating flow information for each local area in the input image;
a figure-ground estimating section for estimating an action of the moving unit based on the flow information, calculating a difference between the estimated action and the action command and then determining a certain local area as a figure area when such difference in association with that specific local area exhibits an error larger than a predetermined value,; and
an object presence/absence determining section for determining presence/absence of an object in the figure area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An object detection method, wherein frequency elements of sequentially-captured images after removing the high-frequency elements from those frequency elements are compared each other to determine presence or absence of continuity which is a measurement for evaluating succession of an object in the images and then it is determined that the same object is included in the images when the presence of the continuity is determined.
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10. An object detection method for detecting an object based on input images that are captured sequentially in time by a moving unit, including steps of:
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generating and sending an action command to the moving unit;
calculating flow information for each local area in the input image;
estimating an action of the moving unit based on the flow information;
comparing the estimated action with the action command to calculate a difference between them;
determining a specific local area as a figure area when such difference in association with that specific local area exhibits an error larger than a predetermined value; and
determining presence/absence of an object in the figure area. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A computer program product for an object detection apparatus including a computer for detecting an object based on input images that are captured sequentially in time by a moving unit, said program when executed performing the functions of:
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generating and sending an action command to the moving unit;
calculating flow information for each local area in the input image;
estimating an action of the moving unit based on the flow information;
comparing the estimated action with the action command to calculate a difference between them;
determining a specific local area as a figure area when such difference in association with that specific local area exhibits an error larger than a predetermined value; and
determining presence/absence of an object in the figure area. - View Dependent Claims (18, 19, 20)
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Specification