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    System and Method for Maintaining Hue Constancy
    21.
    发明申请
    System and Method for Maintaining Hue Constancy 有权
    维持色相常数的系统和方法

    公开(公告)号：US20090021809A1

    公开(公告)日：2009-01-22

    申请号：US11781121

    申请日：2007-07-20

    Applicant: Rajeev Ramanath

    Inventor： Rajeev Ramanath

    IPC: G03F3/08

    CPC classification number: H04N9/643

    Abstract: System and method for maintaining perceived hue constancy. A method for displaying an image includes receiving a color vector and associated image data, remapping the color vector to maintain a perceived hue constancy by adjusting a hue component of the color vector in response to a change in a lightness component or a chroma component of the color vector, providing the remapped color vector to a light source for display, and displaying image data associated with the color vector. The use of the constant hue curve ensures that the adjusting of the color vector maintains the perceived hue of the color vector, thereby helping to maintain image quality.

    Abstract translation: 维持感觉色彩恒定的系统和方法。 一种用于显示图像的方法包括：接收颜色矢量和相关联的图像数据，通过响应于亮度分量或色度分量的变化调整颜色矢量的色相分量，重新映射颜色矢量以维持感知色调恒定性 将重新映射的颜色矢量提供给用于显示的光源，以及显示与彩色矢量相关联的图像数据。 使用恒定色调曲线确保了颜色矢量的调整保持了颜色矢量的感知色调，从而有助于保持图像质量。

    SENSOR ARRANGEMENT ON AN AUTONOMOUS PERSONAL MOBILITY VEHICLE
    25.
    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
    26.
    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
    27.
    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
    28.
    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
    29.
    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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