Image processing apparatus, image processing method and storage medium
AssigneeCanon Kabushiki Kaisha
InventorHideaki Miyamoto
Life of this patent
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Abstract
An image processing apparatus includes: a subtraction unit that generates subtraction images constituted by a plurality of frames from X-ray images of an object acquired before and after injecting a radiopaque dye; an evaluation unit that calculates evaluation values indicating states of the injection of the radiopaque dye for the frames constituting the subtraction images; and a selection unit that selects at least one of the frames constituting the subtraction images using the evaluation values and outputs the selected frame as a reference image.
Claims15
An image processing apparatus comprising:
- a subtraction unit configured to generate digital subtraction angiography images constituted by a plurality of frames from X-ray images of an object acquired before and after injecting a radiopaque dye into the object;
- an evaluation unit configured to calculate evaluation values indicating the state of the injection of the radiopaque dye for each of the frames constituting the digital subtraction angiography images;
- and
- a selection unit configured to select at least one of digital subtraction angiography image using the evaluation values and to output the selected, at least one, digital subtraction angiography image as a reference image.
An image processing method for an image processing apparatus, said method comprising:
- a subtraction step of generating digital subtraction angiography images constituted by a plurality of frames from X-ray images of an object acquired before and after injecting a radiopaque dye into the object;
- an evaluation step of calculating evaluation values indicating the states of the injection of the radiopaque dye for each of the frames constituting the digital subtraction angiography images;
- and
- a selection step of selecting at least one digital subtraction angiography image using the evaluation values and outputting the selected, at least one, digital subtraction angiography image as a reference image.
Dependencies are inferred from the claim text.