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US 10,432,916 B2Granted
Measurement apparatus and operation method of measurement apparatus
AssigneeOlympus Corporation
InventorYohei Sakamoto
Life of this patent
Estimating the term…
Abstract
A reliability determination unit determines a measurement reliability on the basis of a point on a first parallax image. An imaging condition determination unit determines whether imaging conditions of an imaging unit have changed after the reliability determination unit determines that the measurement reliability is low. The imaging unit captures an image of an object which is a measurement target and generates a second parallax image after the reliability determination unit determines that the measurement reliability is low. The reliability determination unit determines the measurement reliability on the basis of a point on the second parallax image after the imaging condition determination unit determines that the imaging conditions have changed.
Claims13
A measurement apparatus comprising:
- an imaging unit configured to capture an image of an object which is a measurement target and generate a parallax image including two images having a parallax therebetween;
- a display control unit configured to cause a display unit to display at least one of the two images, the two images displayed on the display unit being included in a first parallax image which is the parallax image generated when an image of the object is captured at a first timing;
- a designation point setting unit configured to set a designation point in an image which is one of the two images included in the first parallax image and is displayed on the display unit;
- a point detection unit configured to detect a corresponding point corresponding to the designation point in an image which is the other of the two images included in the first parallax image and differs from the image in which the designation point has been set;
- a reliability determination unit configured to determine a measurement reliability on the basis of the designation point and the corresponding point;
- a measurement unit configured to perform measurement of the object using the parallax image when the reliability determination unit determines that the measurement reliability is high;
- and
- an imaging condition determination unit configured to determine whether imaging conditions of the imaging unit have changed from imaging conditions at the first timing after the reliability determination unit determines that the measurement reliability is low,
- wherein, the imaging unit is configured to capture an image of the object at a second timing and generate a second parallax image which is the parallax image including the two images after the reliability determination unit determines that the measurement reliability is low,
- the point detection unit is configured to detect a similar point in one of the two images included in the second parallax image after the imaging condition determination unit determines that the imaging conditions have changed, the similar point being similar to the designation point set in one of the two images included in the first parallax image,
- the point detection unit is configured to detect a similar corresponding point corresponding to the similar point in an image which is the other of the two images included in the second parallax image and differs from the image in which the similar point is detected, and
- the reliability determination unit is configured to determine the measurement reliability on the basis of the similar point and the similar corresponding point.
9 more elements
An operation method of a measurement apparatus, comprising:
- a first imaging step in which the measurement apparatus captures an image of an object which is a measurement target at a first timing and generates a first parallax image including two images having a parallax therebetween by an imaging unit;
- a display step in which the measurement apparatus causes a display unit to display at least one of the two images included in the first parallax image;
- a designation point setting step in which the measurement apparatus sets a designation point in an image which is one of the two images included in the first parallax image and is displayed on the display unit;
- a first point detection step in which the measurement apparatus detects a corresponding point corresponding to the designation point in an image which is the other of the two images included in the first parallax image and differs from the image in which the designation point has been set;
- a first reliability determination step in which the measurement apparatus determines a measurement reliability on the basis of the designation point and the corresponding point;
- a first measurement step in which the measurement apparatus performs measurement of the object using the first parallax image when the measurement reliability is determined to be high in the first reliability determination step;
- an imaging condition determination step in which the measurement apparatus determines whether imaging conditions of the imaging unit have changed from imaging conditions at the first timing after the measurement reliability is determined to be low in the first reliability determination step;
- a second imaging step in which the measurement apparatus captures an image of the object at a second timing and generates a second parallax image including the two images by the imaging unit after the measurement reliability is determined to be low in the first reliability determination step;
- a second point detection step in which the measurement apparatus detects a similar point in one of the two images included in the second parallax image after it is determined that the imaging conditions have changed in the imaging condition determination step, the similar point being similar to the designation point set in one of the two images included in the first parallax image;
- a third point detection step in which the measurement apparatus detects a similar corresponding point corresponding to the similar point in an image which is the other of the two images included in the second parallax image and differs from the image in which the similar point is detected;
- a second reliability determination step in which the measurement apparatus determines the measurement reliability on the basis of the similar point and the similar corresponding point;
- and
- a second measurement step in which the measurement apparatus performs measurement of the object using the second parallax image when the measurement reliability is determined to be high in the second reliability determination step.
10 more elements
Dependencies are inferred from the claim text.