Systems and methods for object dimension estimation
AssigneeIndustrial Technology Research Institute
InventorKual-Zheng Lee
Life of this patent
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Abstract
A system and a method of obtaining a dimension of a target object in an image comprises receiving coordinates of a number of feature points in the image, receiving coordinates of at least one reference object in the image with a known dimension, performing a calibration to adjust the coordinates of at least one of the feature points, and receiving coordinates of the target object in the image and determining the dimension of the target object based on the coordinates of the feature points. The coordinates of at least one of the feature points are adjusted to increase an accuracy in determining the dimension of the reference object.
Claims19
A method of obtaining a dimension of a target object in an image, comprising:
- receiving coordinates of a number of feature points in the image;
- receiving coordinates of at least one reference object in the image with a known dimension;
- performing a calibration to adjust the coordinates of at least one of the feature points, wherein the coordinates of at least one of the feature points are adjusted to increase an accuracy in determining the dimension of the reference object;
- and
- receiving coordinates of the target object in the image and determining the dimension of the target object based on the coordinates of the feature points.
A method of obtaining a dimension of a target object in an image, comprising:
- receiving coordinates corresponding to a number of feature points in the image;
- determining coordinates corresponding to vanishing points based on the coordinates corresponding to the feature points;
- receiving coordinates corresponding to at least one reference object in the image with a known dimension;
- determining the dimension corresponding to the reference object based on the coordinates corresponding to the vanishing points;
- performing a calibration to adjust the coordinates corresponding to the feature points, wherein the coordinates corresponding to the feature points are adjusted to increase an accuracy in determining the dimension of the reference object;
- and
- receiving coordinates of the target object in the image and determining the dimension of the target object based on the vanishing points.
A system for obtaining a dimension of a target object in an image, comprising:
- a first device capable of providing coordinates corresponding to a number of feature points in the image and providing coordinates corresponding to at least one reference object in the image, wherein a dimension of the reference object is known;
- and
- a calibration device for receiving the coordinates corresponding to the feature points and the coordinates corresponding the reference object and for adjusting the coordinates corresponding to the feature points, wherein the coordinates corresponding to the feature points are adjusted to increase accuracy in determining the dimension of the reference object.
Dependencies are inferred from the claim text.