Locating features in warped images

    公开(公告)号:US09922267B1

    公开(公告)日:2018-03-20

    申请号:US15255022

    申请日:2016-09-01

    Inventor: John Worthington

    Abstract: Techniques for locating features of interest in warped images are described. For example, a destination image is generated from a source image based on warping a portion of the source image according to a backward map. Each of the two images is associated with a mesh having a tile-based geometry. The backward map maps points from the destination mesh to pixels in the source image. Triangles are formed from the tiles of the destination mesh. A forward map is generated based on the triangles and the backward map. The forward map maps points from the source mesh to pixels in the destination image. A point from the source mesh is identified that corresponds to a pixel of a feature of interest. The forward map is applied to this point to locate a pixel in the destination image. This pixel corresponds to the location of the feature in the destination image.

    LOCATING FEATURES IN WARPED IMAGES

    公开(公告)号:US20180060688A1

    公开(公告)日:2018-03-01

    申请号:US15255022

    申请日:2016-09-01

    Inventor: John Worthington

    Abstract: Techniques for locating features of interest in warped images are described. For example, a destination image is generated from a source image based on warping a portion of the source image according to a backward map. Each of the two images is associated with a mesh having a tile-based geometry. The backward map maps points from the destination mesh to pixels in the source image. Triangles are formed from the tiles of the destination mesh. A forward map is generated based on the triangles and the backward map. The forward map maps points from the source mesh to pixels in the destination image. A point from the source mesh is identified that corresponds to a pixel of a feature of interest. The forward map is applied to this point to locate a pixel in the destination image. This pixel corresponds to the location of the feature in the destination image.

    Pick to Augmented Reality
    7.
    发明申请

    公开(公告)号:US20180005446A1

    公开(公告)日:2018-01-04

    申请号:US15201143

    申请日:2016-07-01

    Abstract: The embodiments provide an augmented reality device for increasing human efficiency in navigating a distribution site and retrieving different customer order items from distinct locations within the distribution site. The augmented reality device uses at least one camera to scan reference points distributed across the distribution site. From the scanning, the device determines its position relative to a destination within the distribution site. The device layers over a real-world view, navigational information directing movement of a device user along a most efficient path to the destination. The camera further scans items falling within its field of view. The device performs feature matching in order to identify a particular item of interest within the field of view. The device layers over the real-world view, visual makers distinguishing the particular item from other items as well instructions or other identifying information relating to the particular item.

    EFFICIENT RENDERING BASED ON RAY INTERSECTIONS WITH VIRTUAL OBJECTS

    公开(公告)号:US20170372508A1

    公开(公告)日:2017-12-28

    申请号:US15194207

    申请日:2016-06-27

    Applicant: Pixar

    Abstract: A method and system for rendering a three-dimensional (3D) scene by excluding non-contributing objects are disclosed. A preliminary object analysis using relatively few rays can be performed to determine which off-camera objects are to be excluded or included in the rendering process. The preliminary object analysis may involve performing an initial ray path tracing to identify intersections between a plurality of rays and one or more objects in the 3D scene. The object analysis can include identifying whether a first object in the 3D scene can be identified as an off-camera object. When the first object is identified as an off-camera object, a number of intersections between the plurality of rays and the first object can be counted. If the number of intersections is less than a corresponding threshold, the first object can be identified as being excluded from a future rendering process to render the first frame.

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