Systems and methods for forming models of three-dimensional objects

    公开(公告)号:US10916025B2

    公开(公告)日:2021-02-09

    申请号:US15773484

    申请日:2016-10-31

    Abstract: A 3D imaging system is proposed in which an object is successively illuminated in at least three directions and at least three images of the object are captured by one or more energy sensors. A set of images is produced computationally showing the object from multiple viewpoints, and illuminated in the at least three directions simultaneously. This set of images is used stereoscopically to form an initial 3D model of the object. Variations in the brightness of the object provides features useful in the stereoscopy. The initial model is refined using photometric data obtained from images in which the object is illuminated in the at least three directions successively.

    3D imaging system
    4.
    发明授权
    3D imaging system 有权
    3D成像系统

    公开(公告)号:US08773508B2

    公开(公告)日:2014-07-08

    申请号:US12935046

    申请日:2009-03-27

    CPC classification number: G06T7/55 G06T2200/08 G06T2207/30204

    Abstract: An apparatus and method for computing a three dimensional model of a surface of an object are disclosed. At least one directional energy source (106-109) directionally illuminates the object (101). An imaging assembly (104), having at least two spatially separated viewpoints (111,112) at fixed positions relative to each other, records a series of images of the object at each viewpoint when the object is illuminated by the source. At least one localisation template (102,103) having predetermined geometrical features is visible to at least one of the viewpoints simultaneously with the object. The images recorded at the viewpoints are analysed so as to determine the location and pose of each viewpoint relative to the template for each image in the series of images. Photometric data for the object is generated using the calculated location and pose of the viewpoints and the image data. Geometric data comprising an initial three dimensional model of the object is generated by performing stereoscopic reconstruction using optical triangulation. The geometric data and photometric data are then combined to construct the three dimensional model.

    Abstract translation: 公开了一种用于计算物体表面的三维模型的装置和方法。 至少一个定向能源(106-109)定向地照射物体(101)。 在相对于彼此的固定位置具有至少两个空间分离的视点(111,112)的成像组件(104)在物体被源照射时在每个视点记录一系列的图像。 具有预定几何特征的至少一个定位模板(102,103)对于与对象同时的至少一个视点是可见的。 分析在视点记录的图像,以便确定该系列图像中的每个图像相对于模板的每个视点的位置和姿态。 使用所计算的视点和图像数据的位置和姿态来生成对象的光度数据。 通过使用光学三角测量进行立体重建来生成包括对象的初始三维模型的几何数据。 然后组合几何数据和光度数据以构建三维模型。

    A METHOD FOR GENERATING A 3D MODEL
    7.
    发明公开

    公开(公告)号:US20230144111A1

    公开(公告)日:2023-05-11

    申请号:US17796475

    申请日:2021-01-29

    CPC classification number: G06T17/00 G06T15/04 G06V40/166

    Abstract: A method for generating a three-dimensional model of a head including at least a portion of a face, comprising: obtaining a distance image of the head using a distance-measuring device having an imaging position, the distance image comprising for each of a two- dimensional array of distance pixels, a respective distance value indicating a distance from the measuring position to a corresponding point in a field of view of the distance-measuring device, the distance image including a face portion corresponding to the at least a portion of a face; estimating the position, relative to the imaging position, of a longitudinal axis of the model of the head based on the at least one dimension; based on the longitudinal axis, generating the three dimensional model of the head based on the position of the longitudinal axis.

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