Patent Document ID: 10102442
Application ID: 15340165
Patent Status: 1

Claim One:
1. An image processing device comprising: a processor for image processing, having a trail extraction section, a trail determination section, a trail detection section and a comparatively dark combination section, that executes instructions for implementing operations in each section as follows: the trail extraction section extracts a region where pixel values continuously become a given value or more, within image data made up of a plurality of pixel values, as a trail, and extracts a trail based on movement of a bright point that has been captured in the image data; the trail determination section determines movement state of the trail that has been extracted by the trail extraction section, the movement state corresponding to at least one of movement velocity or movement direction of the bright point; the trail detection section detects type of the trail based on movement state that has been determined by the trail determination section; and the comparatively dark combination section subjects image data of at least two frames to comparatively dark combination, wherein the trail extraction section extracts a region where the image data, and comparatively dark combination image data that has been subjected to the comparatively dark combination, respectively become the given value or more, as a trail, the trail determination section determines movement state of a trail of the image data by determining whether or not an extracted trail for the image data includes pixel addresses of an extracted trail for the comparatively dark combination image data, and the trail detection section, based on determination results of the trail determination section, detects types of trails, among trails that have been extracted by the trail extraction section from the image data, by making trails that contain pixel addresses of trails that have been extracted by the trail extraction section from the comparatively dark combination image data low movement speed trails, and making trails that do not contain pixel addresses of trails that have been extracted by the trail extraction section from the comparatively dark combination image data high movement speed trails.