PROBLEM TO BE SOLVED: To provide an image generation device that enables a desired tomographic image in a photographing object to be acquired with a configuration simpler than before, while reducing a process load.SOLUTION: An image generation device 1 non-destructively acquiring an image of a specific surface of a photographing object comprises: a radiation source 10 that radiates a radioactive ray a radiation detector 11 that is disposed at a position facing the radiation source 10 across the photographing object, and detects a dose of the radioactive ray a position control section 120 that controls so that a first distance indicative of a distance between a photographing object layer of the photographing object and the radiation source 10 and a second distance indicative of a distance between the photographing object layer and the radiation detector 11 vary, while keeping a state where a ratio of the first distance to the second distance is constant and a radiation projection image generation section 121 that generates a radiation projection image of the photographing object on the basis of a dose of a detection in the radiation detector in accordance with a change in positions of the radiation source 10 and the radiation detector 11.COPYRIGHT: (C)2014,JPO&INPIT【課題】撮影対象物における所望の断層画像をより簡易な構成で、処理負荷を軽減させながら取得することができる画像生成装置を提供する。【解決手段】撮影対象物の特定の面の画像を非破壊的に取得する画像生成装置1は、放射線を放射する線源10と、当該撮影対象物を挟んで線源10に対向する位置に設けられ放射線の線量を検出する放射線検出器11と、当該撮影対象物の撮影対象層と線源10との距離を示す第一の距離と、当該撮影対象層と放射線検出器11との距離を示す第二の距離との比が一定となる状態を保ったまま当該第一の距離と第二の距離とが変化するように制御する位置制御部120と、線源10と放射線検出器11の位置の変化に応じた放射線検出器における検出線量に基づいて、撮影対象物の放射線投影画像を生成する放射線投影画像生成部121と、を備える。【選択図】図1
