PROBLEM TO BE SOLVED: To effectively carry out image processing such as gradation conversion or the like at a main control unit while suppressing a delay in display of a radiation image or delay in controlling radiation.SOLUTION: A radiation sensor unit 120 includes a sensor characteristics correction section 1241 that performs, with respect to a radiation image, correction processing of sensor characteristics that is an image reception characteristics of a radiation sensor 121, an image analysis section 1242 that analyzes the radiation image in which the sensor characteristics correction has been performed and calculates an analysis parameter, and a transmission section 127 that transmits, to a main control section 140, the analysis parameter as a gradation conversion parameter and the radiation image which has been subjected to the sensor characteristics correction. The main control section 140 includes a reception section 141 that receives the gradation conversion parameter and the radiation image which has been subjected to the sensor characteristics correction and an image processing section 1421 that performs gradation conversion processing on the radiation image which has been subjected to the sensor characteristics correction using the gradation conversion parameter.COPYRIGHT: (C)2011,JPO&INPIT【課題】X線画像の表示遅延、或いは、X線制御に関する遅延を抑えつつ、メイン制御ユニットにおける階調変換等の画像処理を効率よく行えるようにする。【解決手段】X線センサユニット120は、X線画像に対して、X線センサ部121が持つ受像特性であるセンサ特性の補正処理を行うセンサ特性補正部1241と、センサ特性補正済みX線画像を解析して、解析パラメータを算出する画像解析部1242と、解析パラメータを階調変換パラメータとしてセンサ特性補正済みX線画像とともに、メイン制御ユニット140に送信する通信部127を備える。メイン制御ユニット140は、階調変換パラメータ及びセンサ特性補正済みX線画像を受信する通信部141と、階調変換パラメータを用いてセンサ特性補正済みX線画像の階調変換処理を行う画像処理部1421を備える。【選択図】図1
