Control device for radiation imaging apparatus and control method therefor
AssigneeCanon Kabushiki Kaisha
InventorTomohiko Matsuura
Life of this patent
Estimating the term…
Abstract
A control device that controls a sensor capable of changing a magnitude of an accumulation capacitance of an electric charge for each pixel includes an acquisition unit configured to acquire an output value according to an accumulated electric charge of each pixel of the sensor, a determination unit configured to determine whether the accumulation capacitance of each pixel is saturated based on the output value, and a setting unit configured to set magnitude of the accumulation capacitance for each pixel according to the determined accumulation capacitance.
Claims23
A control device configured to control a radiation sensor, the radiation sensor being capable of changing a magnitude of accumulation capacitance of an electric charge for each pixel, the control device comprising:
- an acquisition unit configured to acquire an output value according to an accumulated electric charge of each pixel of the sensor;
- a determination unit configured to determine whether the accumulation capacitance of each pixel is saturated based on the output value;
- and
- a setting unit configured to determine, for each pixel, a magnitude of accumulation capacitance based on the determination by the determination unit.
A control device that controls a sensor capable of changing a magnitude of an accumulation capacitance of an electric charge for each pixel, the control device comprising:
- an output acquisition unit configured to acquire an output value according to an accumulated electric charge of each pixel of the sensor;
- a characteristic acquisition unit configured to acquire input/output characteristics which is a characteristic of an output value with respect to an accumulated amount of electric charge for each pixel of the sensor;
- and
- a setting unit configured to determine for each pixel an accumulation capacitance based on the output value and the input/output characteristics.
A method of controlling a radiation sensor capable of changing a magnitude of an accumulation capacitance of an electric charge for each pixel, the method comprising:
- acquiring a first frame image from the sensor which receives light;
- acquiring input/output characteristics of each pixel of the sensor;
- determining for each pixel an accumulation capacitance based on the first frame image and the input/output characteristics of the each pixel;
- and
- acquiring a second frame image from the sensor in which the determined accumulation capacitance is set for each pixel.
A method for controlling a radiation sensor, the radiation sensor being capable of changing a magnitude of accumulation capacitance of an electric charge for each pixel, the method comprising:
- acquiring an output value according to an accumulated electric charge of each pixel of the sensor;
- determining whether the accumulation capacitance of each pixel is saturated based on the output value;
- and
- setting, for each pixel, a magnitude of accumulation capacitance based on the determination by the determining.
Dependencies are inferred from the claim text.