Body movement detection device and method

Abstract

[Problem] To detect with good accuracy body movement within a radiation image without relying on the image pick-up conditions or the subject. [Solution] A contrast calculation unit (24) calculates the contrast of the high frequency components and the contrast of the low frequency components of a converted radiation image (G0) at an analysis point set by an analysis point setting unit (23). A ratio calculation unit (25) calculates the ratio between the contrast of the high frequency components and the contrast of the low frequency components. A determination unit (26) determines, on the basis of the ratio, whether there is movement during image pick-up of the radiation image (G0). A display control unit (27) displays the determination results on a display unit (40).

Description

technical field [0001] The present invention relates to a body motion detection device and method for detecting body motion of a subject during imaging using radiographic images. Also, the present invention relates to an analysis point setting device and method for setting analysis points for detecting body motion in radiographic images. Background technique [0002] When the subject is irradiated with radiation such as X-rays and taken to obtain a radiographic image of the subject, sometimes the acquired radiographic image will be blurred due to the movement of the subject during shooting, i. will get worse. In particular, when the subject is the neck, chest, abdomen, waist, etc. where radiation is irradiated for a long time, or when a child is photographed, body movement is likely to occur, and therefore, radiographic image deterioration is a problem. [0003] The presence or absence of such body motion can be discriminated by the technician performing imaging observing ...

AI Technical Summary

Problems solved by technology

However, in many cases, the resolution of the monitor in the imaging room is low, the radiographic image is displayed in a reduced size, and the observation environment is relatively bright, so it is difficult to observe the displayed radiographic image to determine whether there is body movement.

In this case, the radiographic image can be magnified, but the operation of magnifying the radiographic image reduces the work efficiency of the technician

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