Image processing apparatus, image processing method and storage medium

An image processing apparatus for applying image processing to a set of frame images, the frame images constituting a video of radiographic images,

• the image processing apparatus comprising:
• an image acquirer configured to acquire the radiographic images as the video;
• and
• an image processor configured to apply image processing to the radiographic images acquired by the image acquirer, wherein
• the image processor is configured
• to generate, based on first and second frame images acquired at different time points in the set of frame images included in the radiographic images, first and second primary component images such that the primary component images each include first component having a reduced noise component, respectively,
• to generate a second component image including a second component that is different from the first component based on one of the two frame images,
• to estimate a displacement of the first component based on the two first component images, and
• to generate a radiographic interpolation image that is a radiographic image corresponding to an acquisition time different from the acquisition times of the two frame images, based on the displacement of the first component of the two first component images and the second component image.

An image processing method for applying image processing to a set of frame images, the frame images constituting a video,

• the image processing method comprising:
• a step of generating, based on first and second frame images acquired at different time points in the set of frame images included in the radiographic images, first and second primary component images such that the primary component images each include first component having a reduced noise component, respectively;
• a step of generating a second component image including a second component that is different from the first component based on one of the two frame images;
• a step of estimating a displacement of the first component based on the two first component images;
• and
• a step of generating an interpolation image that corresponds to an acquisition time different from the acquisition times of the two frame images, based on the displacement of the first component of the two first component images and the second component image.

A storage medium storing an image processing program to be executed in an image processing apparatus for applying image processing to a set of frame images, the frame images constituting a video,

• the image processing program causing the image processing apparatus to perform
• a process of generating, based on first and second frame images acquired at different time points in the set of frame images included in the radiographic images, first and second primary component images such that the primary component images each include first component having a reduced noise component, respectively;
• a process of generating a second component image including a second component that is different from the first component based on one of the two frame images;
• a process of estimating a displacement of the first component based on the two first component images;
• and
• a process of generating an interpolation image that corresponds to an acquisition time different from the acquisition times of the two frame images, based on the displacement of the first component of the two first component images and the second component image.