IMAGE-RECOGNITION DEVICE, IMAGE-RECOGNITION METHOD, RECORDING MEDIUM ON WHICH IMAGE-RECOGNITION PROGRAM IS RECORDED, AND IMAGE-RECOGNITION SYSTEM

摘要

This invention provides an image-recognition device and the like whereby a parameter can be computed with a high degree of precision. Said image-recognition device (101) has a tracking unit (102) and a computation unit (103). The tracking unit (102) tracks an object at a constant or substantially constant distance from a ground surface that is included in a plurality of images (201) captured using a camera. With respect to the tracked object, on the basis of the positions and sizes of a plurality of specific images among the aforementioned plurality of images (201), the computation unit (103) computes the angle of elevation with which the camera captured the images.