公开(公告)号：US20160037144A1

公开(公告)日：2016-02-04

申请号：US14775758

申请日：2014-03-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John C. SCHULTZ ,  Eric C. LOBNER ,  Robert W. SHANNON ,  Glenn E. CASNER ,  Quinn D. SANFORD ,  Rolf W. BIERNATH

IPC: H04N9/31

CPC classification number: H04N9/3185 ,  G03B21/10 ,  G03B21/28 ,  G03B21/625 ,  H04N9/3194

Abstract: A projection system (400) capable of projection alignment includes a projector (410), a shaped projection screen (420), one or more alignment marks (425), an image sensor (430), and a processing unit (440). The projector is configured to project an image. The shaped projection screen is configured to receive the projected image and display the projected image, the projector having a projection area (415) on the shaped projection screen. The one or more alignment marks are proximate to a border of the projection screen. The image sensor is configured to capture an image of the shaped projection screen and generate a sensor signal corresponding to the captured image. The processing unit is electronically coupled to the image sensor and configured to receive the sensor signal and determine the positions of the one or more alignment marks based on the sensor signal.

Abstract translation: 能够投影对准的投影系统（400）包括投影仪（410），成形投影屏幕（420），一个或多个对准标记（425），图像传感器（430）和处理单元（440）。 投影机配置为投影图像。 成形投影屏被配置为接收投影图像并显示投影图像，投影仪在投影屏幕上具有投影区域（415）。 一个或多个对准标记靠近投影屏幕的边界。 图像传感器被配置为捕获成形投影屏幕的图像并且生成与所捕获的图像相对应的传感器信号。 处理单元电耦合到图像传感器并且被配置为接收传感器信号并且基于传感器信号确定一个或多个对准标记的位置。

公开(公告)号：US20180047206A1

公开(公告)日：2018-02-15

申请号：US15557114

申请日：2016-03-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ravishankar SIVALINGAM ,  Glenn E. CASNER ,  Jonathan T. KAHL ,  Anthony J. SABELLI ,  Shannon D. SCOTT ,  Robert W. SHANNON

IPC: G06T15/10 ,  G06K9/00 ,  G06K9/20 ,  G06T17/20

CPC classification number: G06T15/10 ,  G06K9/00006 ,  G06K9/00013 ,  G06K9/00073 ,  G06K9/0008 ,  G06K9/00093 ,  G06K9/001 ,  G06K9/2054 ,  G06T17/20

Abstract: A non-parametric computer implemented system and method for creating a two dimensional interpretation of a three dimensional biometric representation. The method comprises: obtaining with a camera a three dimensional (3D) representation of a biological feature; determining a region of interest in the 3D representation; selecting an invariant property for the 3D region of interest; identifying a plurality of minutiae in the 3D representation; mapping a nodal mesh to the plurality of minutiae; projecting the nodal mesh of the 3D representation onto a 2D plane; and mapping the plurality of minutiae onto the 2D representation of the nodal mesh. The 2D representation of the plurality of minutiae has a property corresponding to the invariant property in the 3D representation; and the value of the corresponding property in the 2D projection matches the invariant property in the 3D representation.