Devices, methods, and apparatuses for homography evaluation involving a mobile device
First Claim
Patent Images
1. A method comprising:
- accessing, from a video frame stored in a memory, a two-dimensional image indicative of a three-dimensional object;
detecting homography between said two-dimensional image indicative of said three-dimensional object and a reference object image;
determining whether said homography indicates pose suitable for image augmentation based, at least in part, on a ratio of a first span to a second span of an elliptically-shaped area that encompasses at least some of a plurality of inliers distributed in said two-dimensional image; and
responsive to determining that said homography indicates pose suitable for image augmentation;
tracking said two-dimensional image, from said video frame, in one or more successive video frames; and
inserting said reference object image into at least one of said one or more successive video frames.
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Abstract
Components, methods, and apparatuses are provided that may be used to access information pertaining to a two-dimensional image of a three-dimensional object, to detect homography between said image of said three-dimensional object captured in said two-dimensional image indicative of said three-dimensional object and a reference object image and to determine whether said homography indicates pose suitable for image augmentation based, at least in part, on characteristics of an elliptically-shaped area that encompasses at least some of a plurality of inliers distributed in said two-dimensional image.
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Citations
25 Claims
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1. A method comprising:
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accessing, from a video frame stored in a memory, a two-dimensional image indicative of a three-dimensional object; detecting homography between said two-dimensional image indicative of said three-dimensional object and a reference object image; determining whether said homography indicates pose suitable for image augmentation based, at least in part, on a ratio of a first span to a second span of an elliptically-shaped area that encompasses at least some of a plurality of inliers distributed in said two-dimensional image; and responsive to determining that said homography indicates pose suitable for image augmentation; tracking said two-dimensional image, from said video frame, in one or more successive video frames; and inserting said reference object image into at least one of said one or more successive video frames. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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means for accessing, from a video frame stored in a memory, a two-dimensional image indicative of a three-dimensional object; means for detecting homography between a reference object image and said two-dimensional image indicative of said three-dimensional object; means for determining whether said homography indicates pose suitable for image augmentation based, at least in part, on a ratio of a first span to a second span of an elliptically-shaped area that encompasses at least some of a plurality of inliers distributed in said two-dimensional image; means for tracking said two-dimensional image, from said video frame, in one or more successive video frames responsive to determining that said homography indicates pose suitable for image augmentation; and means for inserting said reference object image into at least one of said one or more successive video frames. - View Dependent Claims (12, 13, 14, 15)
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16. An article comprising:
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a non-transitory storage medium comprising machine-readable instructions stored thereon which are executable by a processor of a mobile device to; access, from a video frame stored in a memory, a two-dimensional image of a three-dimensional object; detect homography between said image of said three-dimensional object representative of said two-dimensional image and a reference object image; and determine whether said homography indicates pose suitable for image augmentation based, at least in part, on a ratio of a first span to a second span of an elliptically-shaped area that encompasses at least some of a plurality of inliers distributed in said two-dimensional image; and responsive to determining that said homography indicates pose suitable for image augmentation; track said two-dimensional image, from said video frame, in one or more successive video frames; and insert said reference object image into said one or more successive video frames. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A mobile device comprising:
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one or more sensors for evaluating homography of an image of a three-dimensional object captured by said mobile device; and one or more processors to; detect homography between said image of said three-dimensional object captured in said two-dimensional image, from a video frame stored in a memory, and a reference object image; determine whether said homography indicates pose suitable for image augmentation based, at least in part, on a ratio of a first span to a second span of an elliptically-shaped area that encompasses at least some of a plurality of inliers distributed in said two-dimensional image; and responsive to determining that said homography indicates pose suitable for image augmentation; track said two-dimensional image, from said video frame, in one or more successive video frames; and insert said reference object image into said one or more successive video frames. - View Dependent Claims (23, 24, 25)
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Specification