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1. 发明授权

US08144321B2 Encoding optical spectra using a DMD array 有权
标题翻译：使用DMD阵列编码光谱
公开(公告)号：US08144321B2
公开(公告)日：2012-03-27
申请号：US12256005
申请日：2008-10-22
申请人： Walter M. Duncan , James N. Malina , Rajeev Ramanath
发明人： Walter M. Duncan , James N. Malina , Rajeev Ramanath
IPC分类号： G01J3/28
CPC分类号： G01J3/02 , G01J3/021 , G01J3/0224 , G01J3/0229
摘要： According to one embodiment of the present invention, a system for encoding an optical spectrum includes a dispersive element, a digital micromirror device (DMD) array, a detector, and a controller. The dispersive element receives light from a source and disperses the light to yield light components of different wavelengths. The digital micromirror device (DMD) array has micromirrors that modulate the light to encode an optical spectrum of the light. The detector detects the light that has been modulated. The controller generates an intensity versus time waveform representing the optical spectrum of the detected light.
摘要翻译：根据本发明的一个实施例，用于编码光谱的系统包括色散元件，数字微镜器件（DMD）阵列，检测器和控制器。分散元件接收来自光源的光，并分散光以产生不同波长的光分量。数字微镜器件（DMD）阵列具有调制光以编码光的光谱的微镜。检测器检测已调制的光。控制器产生表示检测到的光的光谱的强度对时间波形。

2. 发明申请

US20100097604A1 Encoding Optical Spectra Using A DMD Array 有权
标题翻译：使用DMD阵列编码光谱
公开(公告)号：US20100097604A1
公开(公告)日：2010-04-22
申请号：US12256005
申请日：2008-10-22
申请人： Walter M. Duncan , James N. Malina , Rajeev Ramanath
发明人： Walter M. Duncan , James N. Malina , Rajeev Ramanath
IPC分类号： G01J3/28 , G02B26/00
CPC分类号： G01J3/02 , G01J3/021 , G01J3/0224 , G01J3/0229
摘要： According to one embodiment of the present invention, a system for encoding an optical spectrum includes a dispersive element, a digital micromirror device (DMD) array, a detector, and a controller. The dispersive element receives light from a source and disperses the light to yield light components of different wavelengths. The digital micromirror device (DMD) array has micromirrors that modulate the light to encode an optical spectrum of the light. The detector detects the light that has been modulated. The controller generates an intensity versus time waveform representing the optical spectrum of the detected light.
摘要翻译：根据本发明的一个实施例，用于编码光谱的系统包括色散元件，数字微镜器件（DMD）阵列，检测器和控制器。分散元件接收来自光源的光，并分散光以产生不同波长的光分量。数字微镜器件（DMD）阵列具有调制光以编码光的光谱的微镜。检测器检测已调制的光。控制器产生表示检测到的光的光谱的强度对时间波形。

3. 发明授权

US11092998B1 Eyewear device with fingerprint sensor for user input 有权
公开(公告)号：US11092998B1
公开(公告)日：2021-08-17
申请号：US16242240
申请日：2019-01-08
申请人： Julio Cesar Castañeda , Rajeev Ramanath
发明人： Julio Cesar Castañeda , Rajeev Ramanath
IPC分类号： G06F1/16 , G02C7/02 , G06K9/00 , G06F1/3293
摘要： A system comprises an eyewear device that includes a frame, a temple connected to a lateral side of the frame, a fingerprint sensor, and a sensing circuit. The fingerprint sensor includes an input surface to receive input of a finger skin surface. The sensing circuit is configured to track a pattern of fingerprint ridges of the finger skin surface on the input surface. Execution of programming by a processor configures the system to perform functions to track, via the sensing circuit, the pattern of fingerprint ridges of the finger skin surface on the input surface; generate a fingerprint image having the tracked pattern of fingerprint ridges; extract fingerprint features from the fingerprint image; and authorize the user to utilize the eyewear device based on the extracted fingerprint features.

4. 发明授权

US08433155B2 Gaussian noise rejection with directional variance capabilities for use in image processing 有权
标题翻译：高斯噪声抑制与方向方差能力用于图像处理
公开(公告)号：US08433155B2
公开(公告)日：2013-04-30
申请号：US11617096
申请日：2006-12-28
申请人： Jeffrey Matthew Kempf , Rajeev Ramanath
发明人： Jeffrey Matthew Kempf , Rajeev Ramanath
IPC分类号： G06K9/36
CPC分类号： G06T5/002 , G06T2207/10016 , G06T2207/20008
摘要： The noise reduction filter is intensity adaptive and incorporates directional variances of input images.
摘要翻译：降噪滤波器是强度自适应的，并且包括输入图像的方向方差。

5. 发明授权

US07835574B2 System and method to generate multiprimary signals 有权
标题翻译：用于生成多原色信号的系统和方法
公开(公告)号：US07835574B2
公开(公告)日：2010-11-16
申请号：US11403493
申请日：2006-04-13
申请人： Rajeev Ramanath
发明人： Rajeev Ramanath
IPC分类号： G06K9/00
CPC分类号： H04N9/67
摘要： 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.
摘要翻译：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。

6. 发明申请

US20080152219A1 Sequential color reproduction method 有权
标题翻译：顺序色彩再现方法
公开(公告)号：US20080152219A1
公开(公告)日：2008-06-26
申请号：US11616170
申请日：2006-12-26
申请人： Rajeev Ramanath , Donald B. Doherty , Gregory S. Pettitt
发明人： Rajeev Ramanath , Donald B. Doherty , Gregory S. Pettitt
IPC分类号： G06K9/00
CPC分类号： H04N1/6016 , G09G5/02 , G09G2310/0235 , G09G2320/0666 , G09G2340/06
摘要： An improved color processing method for use in imaging systems transforms the input color image components into an output set of color image components, at least one of which is transformed using a non-linear transformation function.
摘要翻译：用于成像系统的改进的颜色处理方法将输入彩色图像分量变换为彩色图像分量的输出组，其中至少一个使用非线性变换函数进行变换。

7. 发明申请

US20070081102A1 Apparatus and method for automatically adjusting white point during video display 审中-公开
标题翻译：在视频显示期间自动调整白点的装置和方法
公开(公告)号：US20070081102A1
公开(公告)日：2007-04-12
申请号：US11247878
申请日：2005-10-11
申请人： Rajeev Ramanath , Gregory Pettitt
发明人： Rajeev Ramanath , Gregory Pettitt
IPC分类号： H04N5/58
CPC分类号： H04N9/73 , G09G2320/0242 , G09G2360/144 , H04N5/58 , H04N9/3182 , H04N9/3194 , H04N21/42202 , H04N21/4318
摘要： The present disclosure relates to systems and processes for automatically adjusting the white point of displayed images to account for changes in ambient light. In one embodiment, a display system includes a display device having sensors for recording the red (R), green (G) and blue (B) values for ambient light and measuring the intensity of such light. The sensors feed these values into a processor, which calculates R, G, B gain values to be applied to the video input R, G, B values. In this manner, the display device can account for changes in ambient light to adjust the perceived white point accordingly. Related methods for automatically adjusting the white point of a perceived image are also described.
摘要翻译：本公开涉及用于自动调整显示图像的白点以解决环境光的变化的系统和过程。在一个实施例中，显示系统包括具有用于记录环境光的红色（R），绿色（G）和蓝色（B）值的传感器的显示装置，并测量这种光的强度。传感器将这些值馈送到处理器中，该处理器计算要应用于视频输入R，G，B值的R，G，B增益值。以这种方式，显示装置可以考虑环境光的变化，以相应地调整感知的白点。还描述了用于自动调整感知图像的白点的相关方法。

8. 发明授权

US11730646B2 System and method to combine input from multiple sensors on an autonomous wheelchair 有权
公开(公告)号：US11730646B2
公开(公告)日：2023-08-22
申请号：US17485350
申请日：2021-09-25
申请人： Rajeev Ramanath
发明人： Rajeev Ramanath , Ramin Nabati
IPC分类号： A61G5/04 , G05D1/02
CPC分类号： A61G5/04 , G05D1/0217 , G05D1/0238 , G05D1/0246 , A61G2203/22 , A61G2203/40 , A61G2203/72 , G05D2201/0206
摘要： The invention discloses a system for controlling the movement of a personal mobility vehicle including a processing unit that receives and processes a location data of one or more obstacles over a period of time, determines a change frequency of change of location of the obstacles during the period of time, and generates a movement state categorization of the obstacles categorizing them into either a dynamic obstacle or a static obstacle. The processing unit further determines a dynamic distance traveled by the dynamic obstacle during the period of time, the velocity of the dynamic obstacle, determines movement probability data that relates to the probability of movement of a static obstacle based on the change frequency of change of location, and, determines velocity prediction data of a dynamic obstacle based on the velocity of dynamic obstacles during various time intervals of the time period.

9. 发明授权

US08379064B2 Pulse width modulation algorithm 有权
标题翻译：脉宽调制算法
公开(公告)号：US08379064B2
公开(公告)日：2013-02-19
申请号：US13088699
申请日：2011-04-18
申请人： Andrew Ian Russell , David Foster Lieb , Rajeev Ramanath
发明人： Andrew Ian Russell , David Foster Lieb , Rajeev Ramanath
IPC分类号： G09G5/10
CPC分类号： G09G3/346 , G02B27/0994 , G09G3/2022 , G09G3/3406 , G09G2320/0626 , G09G2320/0693 , G09G2330/021 , G09G2360/16 , H04N9/3123
摘要： In display systems employing spatial light modulators, the OFF-state light from OFF-state pixels of the spatial light modulator can be captured and directed back to the pixels of the spatial light modulator so as to recycle the OFF-state light in the display system. Bitplanes derived from the desired image to be produced are calibrated to include the recycled off-state light to properly produce the desired image using the display system.
摘要翻译：在采用空间光调制器的显示系统中，空间光调制器的OFF状态像素的OFF状态光可以被捕获并被引导回到空间光调制器的像素，以便再循环显示系统中的OFF状态光。衍生自要生产的所需图像的位平面被校准以包括再循环的断态光，以使用显示系统正确地产生期望的图像。

10. 发明授权

US08305395B2 Color processing method usable in imaging systems 有权
标题翻译：可用于成像系统的彩色处理方法
公开(公告)号：US08305395B2
公开(公告)日：2012-11-06
申请号：US11741972
申请日：2007-04-30
申请人： Rajeev Ramanath , Takeshi Honzawa
发明人： Rajeev Ramanath , Takeshi Honzawa
IPC分类号： G09G5/02
CPC分类号： H04N9/3114
摘要： In a method embodiment, a method for image processing includes receiving one or more signals indicative of an optical characteristic of one or more respective light beams. A transform is generated based on the received one or more signals. The transform converts a first plurality of image components encoded by a first plurality of colors to a second plurality of image components encoded by a second plurality of colors.
摘要翻译：在方法实施例中，一种用于图像处理的方法包括接收指示一个或多个相应光束的光学特性的一个或多个信号。基于所接收的一个或多个信号产生变换。该变换将由第一多个颜色编码的第一多个图像分量转换为由第二多个颜色编码的第二多个图像分量。

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