Image retrieval assist device and image retrieval assist method
View Patent ↗An image retrieval assist device that is communicably connected to an investigation assist device for recording captured images of cameras installed at a plurality of intersections respectively in correlation with camera information and intersection information. The image retrieval assist device has a processor, a communication unit; and a storage that stores an extraction condition of an image for each type of event that has occurred at the intersection, the image indicating a situation at a time of occurrence of the event. The processor accepts an input of event information including the type of event. The processor generates an image retrieval key including the extraction condition according to the input event information. The communication unit transmits the generated image retrieval key to the investigation assist device.
1. An image retrieval assist device that is communicably connected to an investigation assist device for recording captured images of cameras installed at a plurality of intersections, respectively, in association with camera information and intersection information, the image retrieval assist device comprising:
a processor;
a communication unit; and
a storage that stores an extraction condition of an image for each type of event, of a plurality of types of events, that has occurred at the intersection, the image indicating a situation at a time of occurrence of the event,
wherein the processor receives an input of event information including: the type of event and the time of occurrence of the event;
wherein the processor determines, based on the input of event information including: the type of event and the time of occurrence of the event, the extraction condition for the input, the extraction condition specifying a duration of image extraction and camera or intersection identification, and wherein the processor generates an image retrieval key including the extraction condition for the input; and
wherein the communication unit transmits the generated image retrieval key to the investigation assist device.
2. The image retrieval assist device according to claim 1 , wherein the processor outputs a captured image of a camera satisfying the image retrieval key to an output device.
3. The image retrieval assist device according to claim 1 ,
wherein the event information includes at least information on a traveling direction at the time of occurrence of an event of a vehicle involved in the occurrence of the event and information on an intersection at which the event has occurred, and
wherein the processor generates, as the image retrieval key, a condition for extracting a captured image of a camera that captures the vehicle running in the traveling direction in front view for an X (X: a default value) minute before and after the occurrence of the event.
4. The image retrieval assist device according to claim 1 ,
wherein the event information includes at least information on a traveling direction at the time of occurrence of an event of a vehicle involved in the occurrence of the event and information on an intersection at which the event has occurred, and
wherein the processor generates, as the image retrieval key, a condition for extracting captured images of all cameras that capture the vehicle running in the traveling direction every a W (W: a default value) minute from a Y (Y: a default value) minute before the occurrence of the event until Z (Z: a default value) minutes after the occurrence of the event, the captured images corresponding to the information of the intersection.
5. The image retrieval assist device according to claim 1 ,
wherein the event information includes at least information on a traveling direction at the time of occurrence of an event of a vehicle involved in the occurrence of the event and information on an intersection at which the event has occurred, and
wherein the processor generates, as the image retrieval key, a condition for extracting a captured image of a camera that captures the vehicle running in the traveling direction in front view, at the time of the occurrence of the event and at the time of passing through an immediately preceding intersection.
6. An image retrieval assist method using an image retrieval assist device that is communicably connected to an investigation assist device for recording captured images of individual cameras installed at a plurality of intersections in association with camera information and intersection information, the image retrieval assist method comprising:
storing an extraction condition of an image in a storage for each type of event, of a plurality of types of events, that has occurred at the intersection, the image indicating a situation at a time of occurrence of the event;
receiving an input of event information including: the type of event and the time of occurrence of the event;
determining, based on the input of event information including: the type of event and the time of occurrence of the event, the extraction condition for the input, the extraction condition specifying a duration of image extraction and camera or intersection identification;
generating an image retrieval key including the extraction condition for the input; and
transmitting the generated image retrieval key to the investigation assist device.
7. The image retrieval assist method according to claim 6 , wherein the input of event information includes a date of occurrence of the event.
8. The image retrieval assist method according to claim 7 , comprising:
determining, based on the input of event information including the date of occurrence of the event, the extraction condition.
9. The image retrieval assist method according to claim 6 , wherein the extraction condition includes a camera field of view.
10. The image retrieval assist method according to claim 9 , comprising:
determining the camera field of view based on the type of event included in the input of event information.
11. The image retrieval assist method according to claim 9 , wherein the camera field of view and the duration of image extraction are fixed for the type of event.
12. The image retrieval assist device according to claim 1 , wherein the input of event information includes a date of occurrence of the event.
13. The image retrieval assist device according to claim 12 , wherein
the processor determines, based on the input of event information including the date of occurrence of the event, the extraction condition.
14. The image retrieval assist device according to claim 1 , wherein the extraction condition includes a camera field of view.
15. The image retrieval assist device according to claim 14 , wherein the processor determines the camera field of view based on the type of event included in the input of event information.
16. The image retrieval assist device according to claim 14 , wherein the camera field of view and the duration of image extraction are fixed for the type of event.