Methods utilizing triangulation in metrology systems for in-situ surgical applications
View Patent ↗A first metrology method includes the steps of projecting a first image and a second image, aligning the first image and the second image to form an aligned image of a known size, and determining a dimension of a target object by comparing the aligned image to the target object. A second metrology method includes the steps of projecting a first image and a second image, aligning the first image and the second image to form an aligned image of a known size by synchronously adjusting a zoom factor for projecting the first image and an angle for projecting the second image, and determining a dimension of a target object by comparing the aligned image to the target object.
1. A metrology method comprising:
projecting a first image and a second image on a target site;
aligning the first image and the second image to form an aligned image of a known size; and
determining a dimension of a target object by visually comparing the aligned image with the target object.
2. A method as in claim 1 , wherein the aligned image includes aligned circles.
3. A method as in claim 2 , wherein determining the dimension of the target object by visually comparing the aligned image with the target object includes counting a number of the aligned circles encompassed by the target object.
4. A method as in claim 1 , wherein the aligned image includes a single point aligned with a center point of a circle.
5. A method as in claim 1 , wherein at least one of the first image and the second image is projected on the target site by a point source projector.
6. A method as in claim 1 , wherein a single beam is split to project the first image and the second image.
7. A method as in claim 1 , wherein the first and second images are projected by two projectors.
8. A metrology method comprising:
projecting a first image and a second image on a target site;
aligning the first image and the second image to form an aligned image of a known size by synchronously adjusting a zoom factor for projecting the first image and an angle for projecting the second image; and
determining a dimension of a target object by counting uniformly spaced markings of the aligned image encompassed by the target object.
9. A method as in claim 8 , wherein the aligned image includes aligned circles.
10. A method as in claim 8 , wherein the aligned image includes a single point aligned with a center point of a circle.
11. A method as in claim 8 , wherein at least one of the first image and the second image is projected on the target site by a point source projector.
12. A method as in claim 8 , wherein a single beam is split to project the first image and the second image.