Image processing apparatus, image processing method, and image processing system

An image processing method for an image processing apparatus, the image processing method comprising:

• estimating a scattered-ray component contained in a radiation image acquired by irradiating an object with a radiation, wherein the scattered-ray component originates from a scattered ray which is a radiation scattered in the object;
• reducing a noise component included in the radiation image in accordance with first noise information obtained from the radiation image and second noise information obtained from a scattered-ray reduction image obtained by reducing the scattered-ray component from the radiation image;
• and
• outputting a correction image obtained by reducing the scattered-ray component and the noise component in the radiation image.

An image processing system comprising:

• an estimation unit configured to estimate a scattered-ray component contained in a radiation image acquired by irradiating an object with a radiation, the scattered-ray component originating from a scattered ray which is a radiation scattered in the object;
• a noise reduction unit configured to obtain a noise reduction image by reducing a noise component included in the radiation image based on first noise information obtained from the radiation image and second noise information obtained from an image obtained by reducing the scattered-ray component in the radiation image;
• and
• an output unit configured to output a correction image obtained by reducing the scattered-ray component and the noise component in the radiation image.

A non-transitory computer-readable storage medium storing a program to cause an image processing apparatus to perform an image processing method, the image processing method comprising:

• estimating a scattered-ray component contained in a radiation image acquired by irradiating an object with a radiation, wherein the scattered-ray component originates from a scattered ray which is a radiation scattered in the object;
• reducing a noise component included in the radiation image in accordance with first noise information obtained from the radiation image and second noise information obtained from a scattered-ray reduction image obtained by reducing the scattered-ray component from the radiation image;
• and
• outputting a correction image obtained by reducing the scattered-ray component and the noise component in the radiation image.