Situation determining apparatus, situation determining method, situation determining program, abnormality determining apparatus, abnormality determining method, abnormality determining program, and congestion estimating apparatus
First Claim
1. A situation determining apparatus for analyzing captured moving images or a plurality of captured still images to determine a movement situation and/or a degree of congestion of persons, the situation determining apparatus comprising:
- a local image change ratio calculating unit that calculates a time change ratio of a brightness value in a local area of the captured images; and
a situation determining unit that analyzes a histogram of the time change ratios of a plurality of local areas calculated by the local image change ratio calculating unit and determines the movement situation of the persons and/or the degree of congestion of the persons,wherein the movement situation includes at least a situation in which a moving route of the persons is limited to a first specific area in which there are moving persons, wherein other persons are standing in a second specific area that is offset from the first specific area in which there are moving persons and to which the moving route is limited.
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Abstract
The invention provides a situation and abnormality determining apparatus, method, and program capable of easily determining the situation of a monitoring place and the degree of congestion. In addition, the invention provides a congestion estimating apparatus capable of easily and accurately estimating the degree of congestion of persons using an image. A situation determining apparatus for analyzing captured moving images or a plurality of captured still images to determine a movement situation and/or a degree of congestion of persons includes: a local image change ratio calculating unit that calculates a time change ratio of a brightness value in a local area of the captured images; and a situation determining unit that analyzes a histogram of the time change ratios of a plurality of local areas calculated by the local image change ratio calculating unit and determines the movement situation of the persons and/or the degree of congestion of the persons.
21 Citations
14 Claims
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1. A situation determining apparatus for analyzing captured moving images or a plurality of captured still images to determine a movement situation and/or a degree of congestion of persons, the situation determining apparatus comprising:
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a local image change ratio calculating unit that calculates a time change ratio of a brightness value in a local area of the captured images; and a situation determining unit that analyzes a histogram of the time change ratios of a plurality of local areas calculated by the local image change ratio calculating unit and determines the movement situation of the persons and/or the degree of congestion of the persons, wherein the movement situation includes at least a situation in which a moving route of the persons is limited to a first specific area in which there are moving persons, wherein other persons are standing in a second specific area that is offset from the first specific area in which there are moving persons and to which the moving route is limited. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A situation determining apparatus for analyzing captured moving images or a plurality of captured still images to determine a movement situation and/or a degree of congestion of persons, the situation determining apparatus comprising:
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an image input unit that inputs moving images or a plurality of still images of persons captured in an imaging target place; an image accumulating unit that accumulates the images input by the image input unit; a local image change detecting unit that selects two images captured at a first time interval from the images accumulated in the image accumulating unit and detects a change between the two images in each local area using area division information indicating a division method of dividing the image into a plurality of local areas; a local image change information accumulating unit that accumulates the change between the two images detected by the local image change detecting unit as image change information; a local image change ratio calculating unit that counts the number of changes between images given at a second time interval in each local area on the basis of the image change information accumulated in the local image change information accumulating unit, and calculates an image change ratio of each local area; a local image change ratio accumulating unit that accumulates the image change ratios of a plurality of local areas calculated by the local image change ratio calculating unit; a local image change ratio histogram calculating unit that calculates a histogram of the image change ratios of the plurality of local areas accumulated by the local image change ratio accumulating unit; and a situation determining unit that analyzes the histogram calculated by the local image change ratio histogram calculating unit to determine the movement situation and or the degree of congestion of the persons in the imaging target place.
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8. A situation determining method of analyzing captured moving images or a plurality of captured still images to determine a movement situation and/or a degree of congestion of persons, the situation determining method comprising:
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a local image change ratio calculating step of calculating a time change ratio of a brightness value in a local area of the captured images; and a situation determining step of analyzing a histogram of the time change ratios of a plurality of local areas calculated by the local image change ratio calculating step and determining the movement situation of the persons and/or the degree of congestion of the persons, wherein the movement situation includes at least a situation in which a moving route of the persons is limited to a first specific area in which there are moving persons, wherein other persons are standing in a second specific area that is offset from the first specific area in which there are moving persons and to which the moving route is limited. - View Dependent Claims (9, 10, 11)
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12. A storage medium for recording a situation determining program that analyzes captured moving images or a plurality of captured still images to determine a movement situation and/or a degree of congestion of persons, the situation determining program allowing a computer to execute:
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a local image change ratio calculating step of calculating a time change ratio of a brightness value in a local area of the captured images; and a situation determining step of analyzing a histogram of the time change ratios of a plurality of local areas calculated by the local image change ratio calculating step and determining the movement situation of the persons and/or the degree of congestion of the persons, wherein the movement situation includes at least a situation in which a moving route of the persons is limited to a first specific area in which there are moving persons, wherein other persons are standing in a second specific area that is offset from the first specific area in which there are moving persons and to which the moving route is limited. - View Dependent Claims (13)
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14. A situation determining apparatus for analyzing captured moving images or a plurality of captured still images to determine a movement situation and/or a degree of congestion of persons, the situation determining apparatus comprising:
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an image input unit that inputs moving images or a plurality of still images of persons captured in an imaging target place; an image accumulating unit that accumulates the images input by the image input unit; a local image change detecting unit that selects two images captured at a first time interval from the images accumulated in the image accumulating unit and detects a change between the two images in each local area using area division information indicating a division method of dividing the image into a plurality of local areas; a local image change information accumulating unit that accumulates the change between the two images detected by the local image change detecting unit as image change information; a local image change ratio calculating unit that counts the number of changes between images given at a second time interval in each local area on the basis of the image change information accumulated in the local image change information accumulating unit, and calculates an image change ratio of each local area; and a situation determining unit that analyzes a histogram of the image change ratios of the plurality of local areas calculated by the local image change ratio calculating unit to determine the movement situation and/or the degree of congestion of the persons in the imaging target place.
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Specification