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45 条记录 (耗时 0.03 秒)

    Method to Store a Secret QR Code into a Colored Secure QR Code
    11.
    发明申请
    Method to Store a Secret QR Code into a Colored Secure QR Code 审中-公开

    公开(公告)号：US20190087699A1

    公开(公告)日：2019-03-21

    申请号：US16178745

    申请日：2018-11-02

    申请人： Gonzalo R. Arce ,  Gonzalo Garateguy ,  Sean Xiaolu Wang ,  Daniel L. Lau

    发明人： Gonzalo R. Arce ,  Gonzalo Garateguy ,  Sean Xiaolu Wang ,  Daniel L. Lau

    IPC分类号： G06K19/06

    CPC分类号： G06K19/06056

    摘要： The present invention embodies a technique, referred to as Secure QR Codes, which not only provides aesthetically enhanced QR codes but also allows for security. It can embed a standard black and white QR code, referred to as a public QR code, and a secret QR code, both into a secure QR code. The secure QR code produced is composed of colored cells. The public black and white QR code must first be, either aesthetically enhanced into an enhanced colored QR code, or transformed into a colored QR code with cells of uniform color obtained by transforming each of the black and white cells of the public QR code into cells that takes a color from a subset of possible colors, such that the luminance of each colored cell approximates accurately the black or white luminance values of the public QR code.

    Spectral imaging sensors and methods with time of flight sensing
    12.
    发明授权
    Spectral imaging sensors and methods with time of flight sensing 有权

    公开(公告)号：US10151629B2

    公开(公告)日：2018-12-11

    申请号：US15559228

    申请日：2016-03-18

    申请人： Daniel L. Lau ,  Gonzalo R. Arce

    发明人： Daniel L. Lau ,  Gonzalo R. Arce

    IPC分类号： G01J3/28 ,  G01J3/02 ,  G01S17/89 ,  G01S17/36 ,  G01S7/481 ,  G01S7/486 ,  G01J3/10

    摘要： Spectral imaging sensors and methods are disclosed. One spectral imaging sensor includes a light source, an array of coded apertures, one or more optical elements, and a photodetector. The light source is configured to emit a plurality of pulses of light toward an object to be imaged. The array of coded apertures is positioned to spatially modulate light received from the object to be imaged. The optical elements are configured to redirect light from the array of coded apertures. The photodetector is positioned to receive light from the one or more optical elements. The photodetector comprise a plurality of light sensing elements. The plurality of light sensing elements are operable to sense the light from the one or more optical elements in a plurality of time periods. The plurality of time periods have a same frequency as the plurality of pulses of light.

    Image quantization for digital printing
    14.
    发明授权
    Image quantization for digital printing 有权
    数字印刷图像量化

    公开(公告)号：US08867100B2

    公开(公告)日：2014-10-21

    申请号：US12820733

    申请日：2010-06-22

    申请人： Daniel L. Lau ,  Gonzalo R. Arce

    发明人： Daniel L. Lau ,  Gonzalo R. Arce

    IPC分类号： H04N1/405 ,  H04N1/40

    CPC分类号： H04N1/40087 ,  H04N1/4057

    摘要： An image may be quantized into a pattern of dots, e.g., for devices capable of printing dots of variable size and variable color intensity. One may use a pre-determined mapping of the continuous-tone intensity value into a discrete vector of intensity values, and each intensity value may then be processed by a set of binary quantizers. The resulting binary vector may then be mapped into a combination of available dot sizes and color intensities. Through a scalar multiplier, the pre-determined mapping of continuous-tone intensity values may be used at multiple print resolutions.

    摘要翻译： 图像可以量化为点阵图案，例如，对于能够打印可变大小和可变颜色强度的点的装置。 人们可以使用连续色调强度值的预定映射到强度值的离散矢量中，然后可以由一组二进制量化器处理每个强度值。 然后可以将所得到的二进制向量映射成可用点大小和颜色强度的组合。 通过标量乘法器，连续色调强度值的预定映射可以以多种打印分辨率使用。

    Automated lenticular photographic system
    15.
    发明授权
    Automated lenticular photographic system 有权
    自动透镜摄影系统

    公开(公告)号：US08804186B2

    公开(公告)日：2014-08-12

    申请号：US13181954

    申请日：2011-07-13

    申请人： Stephen S. Daniell ,  Steven M. Spiro ,  David Whelan ,  James Anderson ,  Daniel L. Lau

    发明人： Stephen S. Daniell ,  Steven M. Spiro ,  David Whelan ,  James Anderson ,  Daniel L. Lau

    IPC分类号： G06K15/00

    CPC分类号： G02B27/2214 ,  G02B3/005 ,  G03B35/24 ,  G03C7/14

    摘要： An automated lenticular photographic system includes an interface that permits a user to upload image files and image processing and printing equipment that is in communication with the interface for receiving the uploaded image files and processing the uploaded image files to create an interlaced print image file that is used to produce an interlaced print sheet containing interlaced print images. A pair of registration marks is formed on the interlaced print sheet outside of borders of the interlaced print images. The system also includes a processing station where the interlaced print sheet is aligned with a lenticular lens sheet with a registration system that detects whether the lenticular lens sheet is off-centered and skewed relative to the interlaced print sheet. The system also includes means for controllably adjusting the position of the lenticular lens sheet relative to the interlaced print sheet until proper registration between the lenticular lens sheet and the interlaced print sheet is achieved. The lenticular lens sheet is at least selectively joined to the interlaced print sheet to provide a lenticular product that can be delivered back to the user.

    摘要翻译： 自动透镜摄影系统包括允许用户上传与用于接收上传的图像文件的接口通信的图像文件和图像处理和打印设备并且处理上传的图像文件以创建隔行打印图像文件的界面， 用于产生包含交错打印图像的隔行打印纸。 在隔行印刷图像的边界之外的隔行打印纸上形成一对配准标记。 该系统还包括处理站，其中隔行打印纸与双凸透镜片对准，其具有检测双凸透镜片是否偏心并相对于隔行打印片倾斜的配准系统。 该系统还包括用于可控地调整双凸透镜片相对于隔行打印片的位置的装置，直到实现双凸透镜片和隔行打印片之间的适当配准。 双凸透镜片材至少选择性地连接到隔行扫描片材以提供可以被输送回用户的透镜产品。

    System and method for 3D imaging using structured light illumination
    17.
    发明授权
    System and method for 3D imaging using structured light illumination 有权
    使用结构光照射的3D成像的系统和方法

    公开(公告)号：US08224064B1

    公开(公告)日：2012-07-17

    申请号：US11586473

    申请日：2006-10-25

    申请人： Laurence G. Hassebrook ,  Daniel L. Lau ,  Henry G. Dietz

    发明人： Laurence G. Hassebrook ,  Daniel L. Lau ,  Henry G. Dietz

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00 ,  G01B11/2513 ,  G01B11/254 ,  G06K9/00006 ,  G06K9/00201 ,  G06K9/2036 ,  G06K2209/40 ,  G06K2209/401 ,  G06T7/521 ,  G06T2207/30196 ,  H04N13/204 ,  H04N13/254 ,  Y10S902/03

    摘要： A biometrics system captures and processes a handprint image using a structured light illumination to create a 2D representation equivalent of a rolled inked handprint. The biometrics system includes an enclosure with a scan volume for placement of the hand. A reference plane with a backdrop pattern forms one side of the scan volume. The backdrop pattern is preferably a random noise pattern and the coordinates of the backdrop pattern are predetermined at system provisioning. The biometrics system further includes at least one projection unit for projecting a structured light pattern onto a hand positioned in the scan volume on or in front of the backdrop pattern and at least two cameras for capturing a plurality of images of the hand, wherein each of the plurality of images includes at least a portion of the hand and the backdrop pattern. A processing unit calculates 3D coordinates of the hand from the plurality of images using the predetermined coordinates of the backdrop pattern to align the plurality of images and mapping the 3D coordinates to a 2D flat surface to create a 2D representation equivalent of a rolled inked handprint. The processing unit can also adjust calibration parameters for each hand scan from calculating coordinates of the portion of backdrop pattern in the at least one image and comparing with the predetermined coordinates of the backdrop pattern.

    摘要翻译： 生物识别系统使用结构光照射捕获并处理手印图像，以创建等效于滚动着墨手印的2D表示。 生物识别系统包括具有用于放置手的扫描体积的外壳。 具有背景图案的参考平面形成扫描体积的一侧。 背景图案优选地是随机噪声模式，并且在系统配置时预定背景图案的坐标。 生物测定系统还包括至少一个投影单元，用于将结构化光图案投影到位于背景图案上或之前的扫描体积中的手上，以及用于捕获手的多个图像的至少两个照相机，其中每个 多个图像至少包括手的一部分和背景图案。 处理单元使用背景图案的预定坐标从多个图像计算手的3D坐标，以对准多个图像并将3D坐标映射到2D平面，以创建等同于滚动着墨手印的2D表示。 处理单元还可以从至少一个图像中的背景图案的部分的计算坐标调整每个手扫描的校准参数，并与背景图案的预定坐标进行比较。