Image generating apparatus, image generating method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorSatoru Oishi
Life of this patent
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Abstract
An image generating apparatus includes an obtaining unit configured to obtain plural pieces of tomographic image data, in which each piece of tomographic image data indicates a cross section of substantially the same position of a subject, a calculation unit configured to calculate a motion contrast value based on the plural pieces of tomographic image data and a comparison result of a representative value of the plural pieces of tomographic image data indicating a signal intensity and a threshold, a generation unit configured to generate a motion contrast image of the subject based on the motion contrast value, and a change unit configured to change the threshold.
Claims18
An image generating apparatus comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the image generating apparatus to function as:
- an obtaining unit configured to obtain plural pieces of tomographic image data, wherein each piece of tomographic image data indicates a cross section of substantially the same position of a subject,
- a change unit configured to set a threshold value of a threshold,
- a calculation unit configured to calculate a motion contrast value based on the plural pieces of tomographic image data and a result of comparing the threshold value and a representative value of the plural pieces of tomographic image data indicating a signal intensity, and;
- a generation unit configured to generate a motion contrast image of the subject based on the calculated motion contrast value,
- wherein, in response to a user operation received from a user via a user interface, the change unit changes the threshold value based on the user operation such that the generated motion contrast image of the subject changes based on the changed threshold value.
An image generating apparatus comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the image generating apparatus to function as:
- an obtaining unit configured to obtain plural pieces of tomographic image data, wherein each piece of tomographic image data indicates a cross section of substantially the same position of a subject,
- a calculation unit configured to calculate (1) a first motion contrast value in a first position based on the plural pieces of tomographic image data and a result of comparing a first threshold value and a representative value of the plural pieces of tomographic image data indicating a signal intensity in the first position, and to calculate (2) a second motion contrast value in a second position, located deeper than the first position, based on the plural pieces of tomographic image data and a result of comparing a second threshold value, different from the first threshold value, and a representative value of the plural pieces of tomographic image data indicating a signal intensity in the second position;
- and
- a generation unit configured to generate a motion contrast image of the subject,
- wherein the generation unit generates the motion contrast image of the subject based on the first and second motion contrast values.
A method for an image generating apparatus, the method comprising:
- obtaining plural pieces of tomographic image data, wherein each piece of tomographic image data indicates a cross section of substantially the same position of a subject;
- setting a threshold value of a threshold;
- calculating a motion contrast value based on the plural pieces of tomographic image data and a result of comparing the threshold value and a representative value of the plural pieces of tomographic image data indicating a signal intensity;
- and
- generating a motion contrast image of the subject based on the calculated motion contrast value,
- wherein, in response to a user operation received from a user via a user interface, setting includes changing the threshold value based on the user operation such that the generated motion contrast image of the subject changes based on the changed threshold value.
Dependencies are inferred from the claim text.