Back to results
US 9,959,602 B2Granted
Image processing device, radiography apparatus, image processing method, and non-transitory storage medium
AssigneeCanon Kabushiki Kaisha
InventorTsuyoshi Kobayashi
Life of this patent
Estimating the term…
Abstract
An image processing device and a radiography apparatus each include a pixel selection unit configured to select pixels of an image based on pixel values of pixels of the image obtained by capturing an image of a subject, and a subtraction processing unit configured to subtract, from the image, a line artifact extracted using a profile in predetermined direction and is based on the pixels selected by the pixel selection unit.
Claims9
An image processing device comprising:
- a pixel selection unit configured to select a plurality of pixels having pixel values being equal to or smaller than a first predetermined pixel value for each line in an area shielded by a collimator in a case where an image includes the area shielded by the collimator;
- an extraction processing unit configured to extract a line artifact in the area in which the pixels are selected by the pixel selection unit;
- and
- a subtraction processing unit configured to subtract the extracted line artifact from the image, wherein in a case where the image does not include the area shielded by the collimator, the pixel selection unit removes, from the image, pixels having pixel values larger than or equal to a second predetermined pixel value and selects a plurality of pixels in ascending order of pixel value for each line of the image after removing the pixels.
1 more element
An image processing method comprising:
- selecting a plurality of pixels having pixel values being equal to or smaller than a first predetermined pixel value for each line in an area shielded by a collimator in a case where an image includes the area shielded by the collimator;
- extracting a line artifact in the area in which the pixels are selected;
- and
- subtracting the extracted line artifact from the image,
- wherein in a case where the image does not include the area shielded by the collimator, selecting comprises removing, from the image, pixels having pixel values larger than or equal to a second predetermined pixel value and selecting the plurality of pixels in ascending order of pixel value for each lie of the image after removing the pixels.
2 more elements
Dependencies are inferred from the claim text.