Method of providing a descriptor for at least one feature of an image and method of matching features
AssigneeApple Inc.
InventorsDaniel Kurz, Selim Benhimane
Life of this patent
Estimating the term…
Abstract
A method of providing a descriptor for at least one feature of an image comprises the steps of providing an image captured by a capturing device and extracting at least one feature from the image, and assigning a descriptor to the at least one feature, the descriptor depending on at least one parameter which is indicative of an orientation, wherein the at least one parameter is determined from the orientation of the capturing device measured by a tracking system. The invention also relates to a method of matching features of two or more images.
Claims20
A method comprising:
- extracting a feature from an image captured by a capturing device;
- projecting a gravitational force onto a plane of the image;
- determining a direction, with respect to the feature, of the gravitational force projected onto the plane of the image at a location of the feature in the image;
- and
- assigning a descriptor to the feature based on the direction, with respect to the feature, of the gravitational force projected onto the plane of the image at the location of the feature.
An apparatus comprising:
- one or more processors;
- and
- a memory storing instructions executable by the one or more processors to:
- extract a feature from an image captured by a capturing device;
- project a gravitational force onto a plane of the image;
- determine a direction, with respect to the feature, of the gravitational force projected onto the plane of the image at a location of the feature in the image;
- and
- assign a descriptor to the feature based on the direction, with respect to the feature, of the gravitational force projected onto the plane of the image at the location of the feature in the image.
A computer readable storage device storing instructions executable by one or more processors to:
- extract a feature from an image captured by a capturing device;
- project a gravitational force onto a plane of the image;
- determine a direction, with respect to the feature, of the gravitational force projected onto the plane of the image at a location of the feature in the image;
- and
- assign a descriptor to the feature based on the direction, with respect to the feature, of the gravitational force projected onto the plane of the image at the location of the feature in the image.
Dependencies are inferred from the claim text.