Shadow removal video analysis system
A video analysis system includes: a video data acquiring means that acquires video data; a moving object detecting means that detects a moving object from video data acquired by the video data acquiring means, by using a moving object detection parameter, which is a parameter for detecting a moving object; an environment information collecting means that collects environment information representing an external environment of a place where the video data acquiring means is installed; and a parameter changing means that changes the moving object detection parameter used when the moving object detecting means detects a moving object, on the basis of the environment information collected by the environment information collecting means.
1. A video analysis system comprising:
at least one memory storing instructions; and
at least one processor executing the instructions to perform;
acquiring video data acquired at a predetermined location;
detecting a moving object from the video data by using a moving object detection parameter, the moving object detection parameter being a parameter for detecting a moving object; and
collecting environment information for specifying one or more causes making a shadow; wherein
the at least one processor further performs;
removing the shadow from the moving object, using a shadow removal threshold to distinguish the moving object from the shadow; and
changing the shadow removal threshold representing a length or a density of the shadow, in accordance with the environment information including information representing time or date.
2. The video analysis system according to claim 1 , wherein the shadow removal threshold represents an amount indicating a length or a density of the shadow.
3. The video analysis system according to claim 1 , wherein the environment information includes the time or the date when the video data is acquired.
4. The video analysis system according to claim 1 , wherein the environment information includes latitude and longitude where the video data is acquired.
5. The video analysis system according to claim 1 , wherein the environment information includes the weather when the video data is acquired.
6. The video analysis system according to claim 1 , wherein the environment information includes the luminance collected when the video data is acquired.
7. A video analysis method comprising:
acquiring video data acquired at a predetermined location;
detecting a moving object from the video data by using a moving object detection parameter, the moving object detection parameter being a parameter for detecting a moving object; and
collecting environment information for specifying one or more causes making a shadow; wherein
the at least one processor further performs;
removing the shadow from the moving object, using a shadow removal threshold to distinguish the moving object from the shadow; and
changing the shadow removal threshold representing a length or a density of the shadow, in accordance with the environment information including information representing time or date.
8. The video analysis method according to claim 7 , wherein the shadow removal threshold represents an amount indicating a length or a density of the shadow.
9. The video analysis method according to claim 7 , wherein the environment information includes the time or the date when the video data is acquired.
10. The video analysis method according to claim 7 , wherein the environment information includes latitude and longitude where the video data is acquired.
11. The video analysis method according to claim 7 , wherein the environment information includes the weather when the video data is acquired.
12. The video analysis method according to claim 7 , wherein the environment information includes the luminance collected when the video data is acquired.
13. A non-transitory computer-readable storage medium storing a program causing a computer to perform:
acquiring video data acquired at a predetermined location;
detecting a moving object from the video data by using a moving object detection parameter, the moving object detection parameter being a parameter for detecting a moving object; and
collecting environment information for specifying one or more causes making a shadow; wherein
the at least one processor further performs;
removing the shadow from the moving object, using a shadow removal threshold to distinguish the moving object from the shadow; and
changing the shadow removal threshold representing a length or a density of the shadow, in accordance with the environment information including information representing time or date.
14. The non-transitory computer-readable storage medium according to claim 13 , wherein the shadow removal threshold represents an amount indicating a length or a density of the shadow.
15. The non-transitory computer-readable storage medium according to claim 13 , wherein the environment information includes the time or the date when the video data is acquired.
16. The non-transitory computer-readable storage medium according to claim 13 , wherein the environment information includes latitude and longitude where the video data is acquired.
17. The non-transitory computer-readable storage medium according to claim 13 , wherein the environment information includes the weather when the video data is acquired.
18. The non-transitory computer-readable storage medium according to claim 13 , wherein the environment information includes the luminance collected when the video data is acquired.