Patent ID: 8792024
Filing Date: 2014-07-29
Classification: A61B,G06T,H04N

Abstract:
1. An imaging apparatus comprising: a conversion unit comprising a plurality of unit-pixels for converting, into a signal, incident radiation or light according to the incident radiation or light; a control unit for controlling said conversion unit according to a plurality of operation modes; a signal processing unit, operating based on the control by said control unit, for reading a signal of unit-pixel from said conversion unit according to a unit-pixel reading mode among the plurality of operation modes, and for reading a signal of multi-pixel derived by adding signals of two or more unit-pixels from said conversion unit according to a pixel-addition reading mode among the plurality of operation modes; a storage unit for storing positional information of a defective unit-pixel detected based on comparing, with a first threshold value, a signal of a unit-pixel read by the signal processing unit from said conversion unit irradiated with radiation or light, and for storing positional information of a defective multi-pixel detected based on comparing, with a second threshold value, a signal of a multi-pixel derived by adding signals of two or more unit-pixels read by said signal processing unit from said conversion unit irradiated with radiation or light; and a pixel processing unit for performing a correction of a signal of unit-pixel read by said signal processing unit from the conversion unit, based on the positional information of the defective unit-pixel in the unit-pixel reading mode, and for performing a correction of a signal of multi-pixel derived by adding signals of two or more unit-pixels read by said signal processing unit from said conversion unit, based on the positional information of the defective multi-pixel in the pixel-addition reading mode.