PROBLEM TO BE SOLVED: To provide a radiation imaging apparatus capable of suppressing erroneous detection when performing image recognition of an object in a radiation image using machine learning. SOLUTION: The radiation imaging apparatus 100 includes an irradiation unit 1 that irradiates a subject T with radiation, a radiation detection unit 2 that detects radiation that has passed through the subject T, and radiation based on detection signals from the radiation detection unit 2. An image generation unit 21 that generates an image 31 and learning result data 24 for image recognition acquired in advance by machine learning using a plurality of rotated images R1 obtained by rotating the image of the object M at a plurality of angles. The storage unit 7b that stores the object and the target detection unit 22 that detects the target M from the radiation image 31 by image recognition based on the learning result data 24 are provided. [Selection diagram] Figure 1【課題】機械学習を用いて放射線画像中の対象物の画像認識を行う際の誤検出を抑制することが可能な放射線撮影装置を提供する。【解決手段】この放射線撮影装置１００は、被検体Ｔに放射線を照射する照射部１と、被検体Ｔを透過した放射線を検出する放射線検出部２と、放射線検出部２の検出信号に基づき放射線画像３１を生成する画像生成部２１と、対象物Ｍの画像を複数角度に回転させて得られた複数の回転画像Ｒ１を用いた機械学習により予め取得された画像認識用の学習結果データ２４を記憶する記憶部７ｂと、学習結果データ２４に基づいて、放射線画像３１中から画像認識により対象物Ｍを検出する対象物検出部２２とを備える。【選択図】図１
