WARNING DEVICE, WARNING METHOD, AND WARNING PROGRAM

摘要

PROBLEM TO BE SOLVED: To properly issue a warning while maintaining the accuracy in detecting travel of an object even when it is difficult to determine an external environment of a moving body.SOLUTION: A warning device according to the present invention comprises: image acquisition means that acquires an image group constituted of a plurality of images that are continuously photographed; detection means that performs detection of an object on the respective images in the image group; determination means that compares results of the detection of the object in the image group in chronological order to determine the level of travel of the object; and warning means that issues a warning according to the determined level of travel. The image acquisition means acquires a plurality of image groups based on a plurality of respective filter characteristics.SELECTED DRAWING: Figure 1