Target object detection apparatus, target object detection method, and non-transitory computer readable medium

Abstract

A target object detection apparatus () includes an acquisition unit (), a likelihood information generation unit (), and a determination unit (). The acquisition unit () acquires an IF signal from an irradiation apparatus () at a plurality of timings. The likelihood information generation unit () executes, by processing the IF signal, processing of generating, with respect to each of a plurality of IF signals, likelihood information for a region (hereinafter, referred to as a target object region) having a possibility in that an accompaniment, i.e., a target object is present. The likelihood information indicates a distribution of presence probabilities of a target object in at least a height direction in a target object region. Then, the determination unit () determines a presence or absence of a target object, by using likelihood information generated for each of a plurality of target object regions.