公开(公告)号：EP3047456A1

公开(公告)日：2016-07-27

申请号：EP14792892.3

申请日：2014-09-10

申请人： Technion Research & Development Foundation Ltd.

发明人： WETZLER, Aaron ,  MECCA, Roberto ,  KIMMEL, Ron ,  BRUCKSTEIN, Alfred M.

IPC分类号： G06T7/00

CPC分类号： G06T7/0073 ,  G06T7/586 ,  G06T2207/10068 ,  G06T2207/10152 ,  H04N5/2256 ,  H04N2005/2255

摘要： A method of processing a set of images of a scene is disclosed. The set is represented by a plurality of picture-elements defining an image plane, and the images are characterized by different light intensity spatial distributions but the same viewpoint relative to the scene. The method comprises: for each of at least some picture-elements, independently selecting a direction parallel to the image plane, constructing a weighted vector field based on the selected direction, and calculating a height of a surface in the scene perpendicular to the image plane based on the constructed weighted vector field. The method further comprises reconstructing a three-dimensional spatial representation of the surface based on the heights; and transmitting the spatial representation to a computer readable medium.

摘要翻译： 公开了一种处理场景图像的方法。 该集合由限定图像平面的多个图像元素表示，并且图像的特征在于不同的光强度空间分布，但是相对于场景具有相同的视点。 该方法包括：对于至少一些图像元素中的每一个，独立地选择平行于图像平面的方向，基于所选择的方向构建加权矢量场，以及计算垂直于图像平面的场景中的表面的高度 基于构造的加权矢量场。 该方法还包括基于高度来重构表面的三维空间表示; 以及将所述空间表示传输到计算机可读介质。

公开(公告)号：EP2697970A4

公开(公告)日：2016-08-17

申请号：EP12771778

申请日：2012-04-11

申请人： HID GLOBAL CORP

发明人： MUELLER HORST ARNOLD ,  MARTIN RYAN ERIC ,  ROWE ROBERT K

IPC分类号： H04N7/18

CPC分类号： G06T7/0073 ,  G06K9/00013 ,  G06K9/00033 ,  G06K9/0012 ,  G06K9/00899 ,  G06K9/2036 ,  G06K9/4661 ,  G06T7/586 ,  G06T2207/10152

摘要： Methods and devices of studying a predefined portion of an object having a feature of interest are disclosed. The feature of interest defines a class of objects that includes the object. Light sources directly illuminate the object from different illumination directions. The light sources are maintained in a stable configuration relative to the object. For each illumination direction, an image is generated from light scattered from the object with a camera maintained in a stable configuration relative to the light sources. A methodology derived from machine learning for the class of objects is applied to filter the generated images are filtered for a characteristic consistent with the feature of interest. Surface gradients are determined from the filtered images and integrated to generate a topography of a surface of the object.

公开(公告)号：EP2583054A4

公开(公告)日：2017-08-23

申请号：EP11795004

申请日：2011-06-02

申请人： ULTRA ELECTRONICS FORENSIC TECH INC

发明人： LÉVESQUE SERGE

IPC分类号： G01B11/245

CPC分类号： G06T7/0073 ,  G01B11/24 ,  G06T7/586 ,  G06T2207/10152 ,  G06T2207/30136

摘要： There is described a method and 3D image acquisition system for addressing the specular nature of metallic surfaces in general, and ballistic pieces of evidence in particular, using photometric stereo by identifying and solving a plurality of sets of non-linear equations comprising a diffusive term and a specular term to determine a surface normal vector field N(x,y), and using N(x,y) to determine a 3D topography Z(x,y).

摘要翻译： 描述了一种通常用于解决金属表面的镜面特性的方法和3D图像采集系统，特别是使用光度立体，通过识别和求解包括扩散项的多组非线性方程和 用于确定表面法向量场N（x，y）的镜面项以及使用N（x，y）来确定3D地形Z（x，y）。

公开(公告)号：EP3144898A1

公开(公告)日：2017-03-22

申请号：EP15306454.8

申请日：2015-09-17

申请人： Thomson Licensing

发明人： ROBERT, Philippe ,  JIDDI, Salma ,  HUDON, Matis

IPC分类号： G06T15/50 ,  G06T7/00

CPC分类号： G06T15/506 ,  G06T7/0073 ,  G06T7/408 ,  G06T15/80 ,  G06T19/006 ,  G06T2207/10021 ,  G06T2207/10024 ,  G06T2207/10028 ,  G06T2215/16

摘要： A method and system for three dimensional presentation of two dimensional images in a video sequence having a plurality of frames is provided. In one embodiment, the method comprises identifying a plurality of points to be presented in three dimensional images and performing a color and depth sequence analysis for each of these points. A profile is then generated for each of the points based on the analysis. The profiles are classified as variable profiles or constant profiles and a surface reflectance is calculated for each of the points having a constant profile. The method also comprises modifying the two dimensional images to be presented as three dimensional images for points having a constant profile, wherein the images maintain uniform color and appearance between adjacent frames along said video sequence.

摘要翻译： 提供了一种用于在具有帧的多个A视频序列二维图像的三维图象的方法和系统。 在一个中，该方法实施例包括识别点上的多个在三维图像呈现，并且执行用于每个合成点的颜色和深度序列分析。 甲轮廓然后为每个基于所述分析的点的产生。 轮廓被分类为变量或常量的配置文件的配置文件和表面反射率计算每个具有恒定轮廓的点的。 因此，该方法修改包括二维图像被呈现为三维图像为具有恒定轮廓，worin图像保持均匀的颜色，并沿所述视频序列的相邻帧之间的外观分。

公开(公告)号：EP2697970B1

公开(公告)日：2017-12-27

申请号：EP12771778.3

申请日：2012-04-11

申请人： HID Global Corporation

发明人： MUELLER, Horst Arnold ,  MARTIN, Ryan Eric ,  ROWE, Robert K.

IPC分类号： H04N7/18

CPC分类号： G06T7/0073 ,  G06K9/00013 ,  G06K9/00033 ,  G06K9/0012 ,  G06K9/00899 ,  G06K9/2036 ,  G06K9/4661 ,  G06T7/586 ,  G06T2207/10152

摘要： Methods and devices of studying a predefined portion of an object having a feature of interest are disclosed. The feature of interest defines a class of objects that includes the object. Light sources directly illuminate the object from different illumination directions. The light sources are maintained in a stable configuration relative to the object. For each illumination direction, an image is generated from light scattered from the object with a camera maintained in a stable configuration relative to the light sources. A methodology derived from machine learning for the class of objects is applied to filter the generated images are filtered for a characteristic consistent with the feature of interest. Surface gradients are determined from the filtered images and integrated to generate a topography of a surface of the object.

公开(公告)号：EP2697970A1

公开(公告)日：2014-02-19

申请号：EP12771778.3

申请日：2012-04-11

申请人： Lumidigm, Inc.

发明人： MUELLER, Horst Arnold ,  MARTIN, Ryan Eric ,  ROWE, Robert K.

IPC分类号： H04N7/18

CPC分类号： G06T7/0073 ,  G06K9/00013 ,  G06K9/00033 ,  G06K9/0012 ,  G06K9/00899 ,  G06K9/2036 ,  G06K9/4661 ,  G06T7/586 ,  G06T2207/10152

摘要： Methods and devices of studying a predefined portion of an object having a feature of interest are disclosed. The feature of interest defines a class of objects that includes the object. Light sources directly illuminate the object from different illumination directions. The light sources are maintained in a stable configuration relative to the object. For each illumination direction, an image is generated from light scattered from the object with a camera maintained in a stable configuration relative to the light sources. A methodology derived from machine learning for the class of objects is applied to filter the generated images are filtered for a characteristic consistent with the feature of interest. Surface gradients are determined from the filtered images and integrated to generate a topography of a surface of the object.

摘要翻译： 公开了研究具有感兴趣特征的对象的预定义部分的方法和装置。 感兴趣的特征定义了一类包含该对象的对象。 光源从不同的照明方向直接照亮物体。 光源相对于物体保持在稳定的构造。 对于每个照明方向，从相对于光源维持在稳定配置的照相机的物体散射的光产生图像。 应用从对象类的机器学习得出的方法来过滤生成的图像，以便与感兴趣的特征一致的特征进行过滤。 从滤波图像确定表面梯度，并将其整合以产生物体表面的形貌。