US 2022/0284609 A1 · IMAGE ANALYSIS

Abstract

Techniques are described for identifying correspondences between images to generate a fundamental matrix for the camera positions related to the images. The resultant fundamental matrix enables epipolar geometry to correlate common features among the images. Correspondences are identified by confirming feature matches across images by applying a homography to data representing features across images. Further techniques are described herein for generating a representation of a boundary of a feature of a structure based on a digital image. In one or more embodiments, generating a representation of a boundary of a particular feature in a digital image comprises determining a portion of the image that corresponds to the structure, and determining a portion of the image that corresponds to the particular feature. One more vanishing points are associated with the portion of the image corresponding to the particular feature. The one or more vanishing points are used to generate a set of bounding lines for the particular feature, based on which the boundary indicator for the feature is generated.

Claims27

Dependent claims

1-48. (canceled)

A computer-readable storage medium comprising instructions which, when executed by a computer system, cause the computer system to:

receive a first image comprising data for a set of representations of co-planar rectangular features on a first surface having a first orientation;
receive a second image comprising data for representations of the set of co-planar rectangular features on the first surface having a second orientation;
select, from the set of representations on the first surface having the first orientation, a first representation, wherein the set of representations includes one or more first additional representations on the first surface having the first orientation in addition to the first representation;
select, from the set of representations on the first surface having the second orientation, a second representation, wherein the set of representations includes one or more second additional representations on the first surface having the second orientation in addition to the second representation;
generate a first homography aligning the first representation to the second representation;
and
estimate locations of the first additional representations on the first surface having the second orientation based on the first homography.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/638,773Filed 27 Aug 2020

Priority

28 Aug 2019

Published

8 Sep 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06T 7/543
Depth or shape recovery: from line drawings
G06T 7/579
From multiple images: from motion
G06T 7/12
Segmentation; Edge detection: edge-based segmentation
G06T 7/33
Determination of transform parameters for the alignment of images, i.e. image registration: using feature-based methods

Family

Application62/893,100Us provisional application · filed 28 Aug 2019

Application62/940,135Us provisional application · filed 25 Nov 2019

Application62/983,324Us provisional application · filed 28 Feb 2020

Application63/070,165Us provisional application · filed 25 Aug 2020

US 12,456,209 B2Related patent

US 2022/0284609 A1This patent

From the US filing history. Foreign family members aren’t listed.

Image analysis

Life of this patent

Image analysis

Life of this patent

Abstract

Claims27