The invention provides a situation determining apparatus, a situation determining method, a situation determining program, an abnormality determining apparatus, an abnormality determining method, and an abnormality determining 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 120 that calculates a time change ratio of a brightness value in a local area of the captured images; and a situation determining unit 170 that analyzes a histogram of the time change ratios of a plurality of local areas calculated by the local image change ratio calculating unit 120 and determines the movement situation of the persons and/or the degree of congestion of the persons. In addition, a congestion estimating apparatus includes: a movement information generating unit 613 that generates movement information from an image sequence output from an image generating unit 611; a texture information generating unit 615 that generates texture information of the image; a reference movement information generating unit 614 that stores and updates reference movement information, which is a reference for movement; a reference texture information generating unit 616 that stores and updates reference texture information for determining whether there is a person; a movement information determining unit 618 that determines whether there is a movement; a texture information determining unit 619 that determines whether there is the same texture information as a person; and a staying determining unit 620 that receives the determination result of the movement information and the determination result of the texture information and determines whether there is a person. The congestion estimating apparatus determines similarity on the basis of whether there is a movement and texture to determine various states of each area, thereby estimating the degree of congestion. In addition, the congestion estimating apparatus provides the index of a congestion situation and information about the congestion situation.
展开▼
