Luminal background cleaning
First Claim
1. Apparatus for use with at least one input angiogram image of a device inserted inside a portion of a body of a subject, the device including radiopaque portions thereof, the angiogram image being acquired in the presence of contrast agent within the body portion, the apparatus comprising:
- a display; and
at least one processor configured;
to generate a background image in which a relative pixel value is assigned to a first pixel with respect to a second pixel, at least partially based upon relative pixel values of a patch of pixels that surround a first pixel of the input angiogram image that is disposed at the same location as the first pixel of the background image and a patch of pixels that surround a second pixel of the input angiogram image that is disposed at the same location as the second pixel of the background image;
to generate a cleaned image in which visibility of the radiopaque portions of the device is increased relative to the input angiogram image, by dividing the input angiogram image by the background image; and
to drive the display to display an output based upon the cleaned image.
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Accused Products
Abstract
Apparatus and methods are described for use with an input angiogram image of a device inserted inside a portion of subject'"'"'s body, the angiogram image being acquired in the presence of contrast agent. At least one processor (11) includes background-image-generation functionality (13) configured to generate a background image in which a relative value is assigned to a first pixel with respect to a second pixel, at least partially based upon relative values of surroundings of the first pixel and the surroundings of the second pixel in the input image. Cleaned-image-generation functionality (14) generates a cleaned image in which visibility of the radiopaque portions of the device is increased relative to the input image, by dividing the input image by the background image. Output-generation functionality (15) drives a display (16) to display an output based upon the cleaned image. Other applications are also described.
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Citations
20 Claims
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1. Apparatus for use with at least one input angiogram image of a device inserted inside a portion of a body of a subject, the device including radiopaque portions thereof, the angiogram image being acquired in the presence of contrast agent within the body portion, the apparatus comprising:
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a display; and at least one processor configured; to generate a background image in which a relative pixel value is assigned to a first pixel with respect to a second pixel, at least partially based upon relative pixel values of a patch of pixels that surround a first pixel of the input angiogram image that is disposed at the same location as the first pixel of the background image and a patch of pixels that surround a second pixel of the input angiogram image that is disposed at the same location as the second pixel of the background image; to generate a cleaned image in which visibility of the radiopaque portions of the device is increased relative to the input angiogram image, by dividing the input angiogram image by the background image; and to drive the display to display an output based upon the cleaned image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for use with at least one input angiogram image of a device inserted inside a portion of a body of a subject, the device including radiopaque portions thereof, the angiogram image being acquired in the presence of contrast agent within the body portion, the method comprising:
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generating, with a processor, a background image in which a relative pixel value is assigned to a first pixel with respect to a second pixel, at least partially based upon relative pixel values of a patch of pixels that surround a first pixel of the input angiogram image that is disposed at the same location as the first pixel of the background image and a patch of pixels that surround a second pixel of the input angiogram image that is disposed at the same location as the second pixel of the background image; generating, with the processor, a cleaned image in which visibility of the radiopaque portions of the device is increased relative to the input angiogram image, by dividing the input angiogram image by the background image; and generating an output on a display, based upon the cleaned image. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification