Patent ID: 8792612

Claim:
A radiation imaging system that includes a radiation sensor unit configured to generate radiation image data based on a radiation ray that passes through an object and a main control unit configured to receive the radiation image data, the radiation sensor unit comprising: a radiation sensor configured to detect the radiation ray that passes through the object as a radiation image signal; an analog to digital converter configured to convert the radiation image signal into a digital signal as the radiation image data; a sensor characteristics correction unit configured to perform sensor characteristics correction on the radiation image data based on image reception characteristics of the radiation sensor; an image analysis unit configured to calculate, based on the radiation image data in which the sensor characteristics correction is performed, an analysis parameter; and a transmission unit configured to transmit the analysis parameter as a gradation conversion parameter and the radiation image data which has been subjected to the sensor characteristics correction to the main control unit; and the main control unit comprising: a reception unit configured to receive the gradation conversion parameter and the radiation image data which has been subjected to the sensor characteristics correction; a gradation conversion processing unit configured to perform gradation conversion processing on the radiation image data which has been subjected to the sensor characteristics correction based on the gradation conversion parameter, wherein, when the transmission unit transmits the gradation conversion parameter together with the radiation image data which has been subjected to the sensor characteristics correction, the transmission unit embeds the gradation conversion parameter in a header portion of the radiation image data which has been subjected to the sensor characteristics correction in transmitting the gradation conversion parameter, the main control unit further includes a reception determination unit configured to determine whether the radiation image data transmitted by the transmission unit more than or equal to a minimum processing amount of data necessary to perform the gradation conversion processing based on the gradation conversion parameter received at the main control unit, and when the reception determination unit determines that the radiation image data more than or equal to the minimum processing amount is received, the gradation conversion processing unit immediately starts the gradation conversion processing.