Image processing apparatus and computer-readable recording medium
AssigneeKonica Minolta, Inc.
InventorsShintaro Muraoka, Tsuyoshi Kobayashi
Life of this patent
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Abstract
An image processing apparatus includes a structure reducing unit which reduces spatial signal change by a predetermined structure in an X-ray image group in which a plurality of images obtained by capturing a same site of a same subject a plurality of times using an X-ray are aligned in a time series. The structure reducing unit reduces the spatial signal change by the predetermined structure in each image of the X-ray image group using information of an image different from the image of the X-ray image group being processed.
Claims18
An image processing apparatus comprising:
- a structure reducing unit which reduces spatial signal change by a predetermined structure in an X-ray image group in which a plurality of images obtained by irradiating a plurality of X-rays to a same site of a same subject are sequentially aligned,
- wherein the structure reducing unit includes:
- an extracting unit which obtains an extraction result by extracting a region of the predetermined structure from each image of the X-ray image group;
- a comparing unit which obtains a compared result by comparing the extraction result for each image of the X-ray image group with the extraction result of a different image of the X-ray image group that is different from the each image, and which corrects the extraction result of the each image based on the compared result;
- and
- a reducing unit which specifies the region of the predetermined structure of the each image of the X-ray image group based on the extraction result after processing by the comparing unit and reduces the spatial signal change in the region.
An image processing apparatus comprising:
- a structure reducing unit which reduces spatial signal change by a predetermined structure in an X-ray image group in which a plurality of images obtained by irradiating a plurality of X-rays to a same site of a same subject are sequentially aligned,
- wherein the structure reducing unit further includes,
- a first extracting unit which extracts a region of the predetermined structure from any one or more images of the X-ray image group;
- a second extracting unit which refers to the region of the predetermined structure extracted by the first extracting unit and extracts a region of the predetermined structure from another image of the X-ray image group which is not a target of extraction by the first extracting unit;
- and
- a reducing unit which specifies a region of the predetermined structure from each image of the X-ray image group based on an extraction result of the region of the predetermined structure and reduces a spatial signal change in the region.
An image processing apparatus comprising:
- a structure reducing unit which reduces spatial signal change by a predetermined structure in an X-ray image group in which a plurality of images obtained by irradiating a plurality of X-rays to a same site of a same subject are sequentially aligned,
- wherein the structure reducing unit compares a result of reduction of the spatial signal change of the predetermined structure in each image of the X-ray image group with a result of reduction of an image different from the image of the X-ray image group after a process of reduction of the spatial signal change of the predetermined structure in each image of the X-ray image group, and as a result of comparison, when a degree of reduction of the spatial signal change in the predetermined structure is low compared to the different image, the process of reduction of the spatial signal change of the predetermined structure in the image is performed again.
An image processing apparatus comprising:
- a structure reducing unit which reduces spatial signal change by a predetermined structure in an X-ray image group in which a plurality of images obtained by irradiating a plurality of X-rays to a same site of a same subject are sequentially aligned,
- wherein the structure reducing unit further includes,
- a density profile creating unit which creates a density profile of the predetermined structure used to reduce the spatial signal change of the predetermined structure in the image for each image of the X-ray image group;
- and
- a density profile correcting unit which corrects the density profile created for each image before performing a process of reduction using the density profile on the basis of the density profile of the image and the density profile of at least one image different from the image.
A non-transitory computer-readable recording medium having a program stored thereon for controlling a computer used in an image processing apparatus which reduces spatial signal change by a predetermined structure in an X-ray image group in which a plurality of images obtained by irradiating a plurality of X-rays to a same site of a same subject are time-sequentially aligned, wherein the program controls the computer to function as:
- an extracting unit which extracts a region of the predetermined structure from each image of the X-ray image group;
- a comparing unit which compares an extraction result by the extracting unit for each image of the X-ray image group with an extraction result of the image different from the image of the X-ray image group, and which corrects the extraction result of the image based on a compared result;
- and
- a reducing unit which specifies a region of the predetermined structure from each image of the X-ray image group based on the extraction result after processing by the comparing unit and reduces the spatial signal change in the region.
Dependencies are inferred from the claim text.