1. An object detecting device comprising: an information generator that calculates (i) an intensity of reflection which is a representative value of received power from the received power of a reflected signal from one or more objects, the reflected signal received by a radar device, for each of cells obtained by partitioning an azimuth angle with respect to the radar device transmitting a radar signal and a distance from the radar device at predetermined intervals, and (ii) generates profile information indicating the intensity of reflection; a capture point calculator that calculates a cell which has a local maximum value of the intensity of reflection as a capture point of the one or more objects based on the profile information of each cell; a capture region calculator that calculates at least one or more capture regions, each being an aggregation of cells including the capture point, based on the profile information of each cell and the capture point; a capture region grouping portion that selects, if a plurality of capture regions are calculated, a reference capture region and a proximity capture region which is present within a predetermined distance from a capture point of the reference capture region from the plurality of capture regions and determines whether or not to group the proximity capture region and the reference capture region into one capture region based on information on the proximity capture region and information on the reference capture region; and an object determiner that determines the object based on a shape of a capture region obtained as a result of grouping, and outputs, to an avoidance device, object determination information related on the determined object.