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    System and method for computing color correction coefficients
    32.
    发明申请
    System and method for computing color correction coefficients 有权
    用于计算颜色校正系数的系统和方法

    公开(公告)号：US20080100639A1

    公开(公告)日：2008-05-01

    申请号：US11588921

    申请日：2006-10-27

    Applicant: Gregory S. Pettitt ,  Rajeev Ramanath

    Inventor： Gregory S. Pettitt ,  Rajeev Ramanath

    IPC: G09G5/02

    CPC classification number: G09G5/06 ,  G01J3/027 ,  G01J3/46 ,  G01J3/462 ,  G01J3/50 ,  G01J3/506 ,  G01J3/524 ,  G09G3/001 ,  G09G2320/0242

    Abstract: System and method for computing coefficients for color correcting rendered colors used in displaying images. A preferred embodiment comprises measuring color values of light output for a display system, receiving color values of desired colors, and computing a color correction matrix based on the measured color values and the input color values. The color correction matrix may be used to modify color commands to a light engine of the display system. The modifications to the color commands permit the storage and use of a set of color commands designed for a reference display system, simplifying display system design and manufacture.

    Abstract translation: 用于计算用于显示图像的颜色校正渲染颜色的系数的系统和方法。 优选实施例包括测量显示系统的光输出的颜色值，接收所需颜色的颜色值，以及基于测量的颜色值和输入颜色值来计算颜色校正矩阵。 颜色校正矩阵可以用于将颜色命令修改到显示系统的光引擎。 对颜色命令的修改允许存储和使用为参考显示系统设计的一组颜色命令，从而简化显示系统设计和制造。

    System and method to generate multiprimary signals
    33.
    发明申请
    System and method to generate multiprimary signals 有权
    用于生成多原色信号的系统和方法

    公开(公告)号：US20070242289A1

    公开(公告)日：2007-10-18

    申请号：US11403493

    申请日：2006-04-13

    Applicant: Rajeev Ramanath

    Inventor： Rajeev Ramanath

    IPC: G03F3/08

    CPC classification number: H04N9/67

    Abstract: System and method for generating multiprimary signals for use in display devices. A preferred embodiment comprises converting a color signal into an intermediate color space representation of the color signal, converting one of a plurality of multiprimary signals that is a representation of the color signal into an intermediate color space representation of the multiprimary signal, computing a quality measure of the intermediate color space representations of the color signal and the multiprimary signal, repeating the converting of a multiprimary signal and the computing for the remainder of the plurality of multiprimary signals, and selecting a multiprimary signal that optimizes the quality measure. The quality measure can consider requirements such as those minimizing a distance between the color signal and the multiprimary signal, an energy change as well as a phase change between the multiprimary signal and its neighbors, all leading to improved image quality.

    Abstract translation: 用于生成用于显示设备的多原色信号的系统和方法。 优选实施例包括将颜色信号转换为彩色信号的中间色彩空间表示，将作为彩色信号的表示的多个多原色信号中的一个转换为多原色信号的中间色彩空间表示，计算质量度量 重复多原色信号的转换和多原色信号的其余部分的计算，并且选择优化质量测量的多原色信号。 质量测量可以考虑诸如使颜色信号和多原色信号之间的距离最小化，能量变化以及多原色信号与其邻居之间的相位变化的要求，这些都导致改进的图像质量。

    SENSOR ARRANGEMENT ON AN AUTONOMOUS PERSONAL MOBILITY VEHICLE
    35.
    发明申请
    SENSOR ARRANGEMENT ON AN AUTONOMOUS PERSONAL MOBILITY VEHICLE 有权

    公开(公告)号：US20220099831A1

    公开(公告)日：2022-03-31

    申请号：US17484400

    申请日：2021-09-24

    Applicant: Rajeev Ramanath

    Inventor： Rajeev Ramanath ,  Julio Cesar Castañeda

    IPC: G01S15/931 ,  G05D1/02 ,  A61G5/04 ,  A61G5/10

    Abstract: The invention envisages a sensor system to be placed onto a personal mobility vehicle. The vehicle includes a structured light sensor that senses one or more obstacles and generates a first sensor data, and a first mechanical coupling that couples the structured light sensor to either a base frame onto which the wheels of the vehicle are attached or the skirt of the vehicle. The system also includes a processing unit that receives and processes the first sensor data and determines a depth of one or more obstacles, and further generates a location information of one or more obstacles.

    EYEWEAR HAVING BIOMETRIC SENSING
    36.
    发明申请
    EYEWEAR HAVING BIOMETRIC SENSING 有权

    公开(公告)号：US20210382322A1

    公开(公告)日：2021-12-09

    申请号：US17408760

    申请日：2021-08-23

    Applicant: Julio Cesar Castañeda ,  Rajeev Ramanath

    Inventor： Julio Cesar Castañeda ,  Rajeev Ramanath

    IPC: G02C5/02 ,  H05K1/18 ,  A61B5/021 ,  A61B5/024 ,  G02C5/12 ,  G02C11/00

    Abstract: In an example, the eyewear includes an optical element, electronic components, and a support structure configured to support the optical element and the electronic components. The support structure defines a region for receiving at least a portion of a head of a user. The eyewear also includes a biometric sensor coupled to the electronic components and supported by the support structure. The biometric sensor is attached to the support structure and positioned to detect, in the region, a biometric signal representative of a biometric of the user for processing by the electronic components.

    Eyewear Having Biometric Sensing
    37.
    发明申请
    Eyewear Having Biometric Sensing 审中-公开

    公开(公告)号：US20190265508A1

    公开(公告)日：2019-08-29

    申请号：US16263034

    申请日：2019-01-31

    Applicant: Julio Cesar Castañeda ,  Rajeev Ramanath

    Inventor： Julio Cesar Castañeda ,  Rajeev Ramanath

    IPC: G02C5/02 ,  H05K1/18 ,  G02C5/12 ,  A61B5/024 ,  A61B5/021

    Abstract: In an example, the eyewear includes an optical element, electronic components, and a support structure configured to support the optical element and the electronic components. The support structure defines a region for receiving at least a portion of a head of a user. The eyewear also includes a biometric sensor coupled to the electronic components and supported by the support structure. The biometric sensor is attached to the support structure and positioned to detect, in the region, a biometric signal representative of a biometric of the user for processing by the electronic components.

    Apparatus and method for decoding extended color space data
    38.
    发明授权
    Apparatus and method for decoding extended color space data 有权
    用于解码扩展颜色空间数据的装置和方法

    公开(公告)号：US08411206B2

    公开(公告)日：2013-04-02

    申请号：US11965671

    申请日：2007-12-27

    Applicant: Gregory S. Pettitt ,  Rajeev Ramanath

    Inventor： Gregory S. Pettitt ,  Rajeev Ramanath

    IPC: H04N7/173 ,  H04N5/46 ,  G09G5/00 ,  G06K9/00 ,  H04N9/64

    CPC classification number: H04N9/67 ,  H04N5/202 ,  H04N9/69

    Abstract: In one embodiment, an image decoding system for a YCbCr formatted signal includes a color space converter capable of representing an RGB image signal with one or two negative image signal components. The image decoding system further includes a degamma correction unit and an image signal formatter. An offset of the image black level from zero corresponding to the image signal offset produced by the color space converter is employed to perform degamma correction. In a further embodiment, gain, offset, and sign are removed from the image signal produced by the color space converter prior to degamma correction. The image signal formatter may utilize a one-dimensional and a three-dimensional lookup table to produce an image signal that may include secondary and white image components. The system advantageously accommodates decoding xvYCC-encoded image data in conventional as well as new hardware display system architectures.

    Abstract translation: 在一个实施例中，用于YCbCr格式化信号的图像解码系统包括能够用一个或两个负图像信号分量表示RGB图像信号的色彩空间转换器。 该图像解码系统还包括一个伽马校正单元和一个图像信号格式器。 使用与由色空间转换器产生的图像信号偏移相对应的图像黑色电平与零的偏移来进行去角度校正。 在另一个实施例中，增益，偏移和符号在去除伽马校正之前从由颜色空间转换器产生的图像信号中去除。 图像信号格式器可以利用一维和三维查找表来产生可以包括次级和白色图像分量的图像信号。 该系统有利地适应于常规的以及新的硬件显示系统架构中的解码xvYCC编码的图像数据。

    Method for color signal gamut mapping and saturation boosting
    39.
    发明授权
    Method for color signal gamut mapping and saturation boosting 有权
    彩色信号色域映射和饱和提升方法

    公开(公告)号：US08259125B2

    公开(公告)日：2012-09-04

    申请号：US13302317

    申请日：2011-11-22

    Applicant: Rajeev Ramanath ,  Larry L. Jenkins

    Inventor： Rajeev Ramanath ,  Larry L. Jenkins

    IPC: G09G5/00 ,  G09G5/02 ,  G06K9/00 ,  H04N5/46 ,  H04N5/74 ,  H04N1/46 ,  G02F1/07 ,  G03F3/38 ,  G03F3/08 ,  G09G3/16 ,  G06K9/36 ,  G06K9/40 ,  H04N5/00 ,  H04N9/28

    CPC classification number: G09G5/02 ,  G09G3/001 ,  G09G3/346 ,  G09G2340/06

    Abstract: Methods for gamut mapping and boosting a color saturation of a color signal having multiple colors and a color value for each color. An example method includes mapping each color from a first to a second color space, adjusting each color in the mapped color signal including boosting a color saturation; determining a maximum color value of the color signal; and, in response to a determining that the maximum color value exceeds a maximum displayable color value, setting the color value of the color having the maximum color value to be equal to the maximum displayable color value and scaling color values of colors not having the maximum color value.

    Abstract translation: 用于色域映射和提升具有多种颜色的彩色信号的颜色饱和度和每种颜色的颜色值的方法。 一种示例性方法包括将每种颜色从第一颜色空间映射到第二颜色空间，调整所映射的颜色信号中的每种颜色，包括增加色彩饱和度; 确定所述颜色信号的最大颜色值; 并且响应于确定最大颜色值超过最大可显示颜色值，将具有最大颜色值的颜色的颜色值设置为等于最大可显示颜色值和不具有最大颜色的颜色的缩放颜色值 颜色值。

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