公开(公告)号：US09171196B2

公开(公告)日：2015-10-27

申请号：US13416436

申请日：2012-03-09

申请人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Beilei Xu ,  Raja Bala ,  Graham Pennington

发明人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Beilei Xu ,  Raja Bala ,  Graham Pennington

IPC分类号： H04N7/18 ,  G06K9/00 ,  H04N5/33 ,  G06K9/20

CPC分类号： G06K9/00255 ,  G06K9/00838 ,  G06K9/2018 ,  H04N5/33

摘要： What is disclosed is a system and method for selecting the optimal wavelength ban combination for a multi-band infrared camera system which is optimized for skin detection. An objective function is constructed specifically for this application from classified performance and the algorithm generates wavelengths by maximizing the objective function. A specific wavelength band combination is selected which maximizes the objective function. Also disclosed is a 3-band and 4-band camera system with filters each having a transmittance of one of a combination of wavelength bands optimized to detect skin in the infrared band. The camera systems disclosed herein find their intended uses in a wide array of vehicle occupancy detection systems and applications. Various embodiments are disclosed.

摘要翻译： 公开的是用于为针对皮肤检测而优化的多频带红外相机系统选择最佳波长禁止组合的系统和方法。 目标函数由分类性能专门为此应用构建，算法通过最大化目标函数生成波长。 选择使目标函数最大化的特定波段组合。 还公开了一种具有滤波器的三频带和四频带相机系统，每个滤波器具有被优化以检测红外频带中的皮肤的波长带的组合之一的透射率。 本文公开的相机系统在各种车辆占用检测系统和应用中找到其预期用途。 公开了各种实施例。

公开(公告)号：US09129159B2

公开(公告)日：2015-09-08

申请号：US13488549

申请日：2012-06-05

申请人： George Cunha Cardoso ,  Graham Pennington ,  Yao Rong Wang

发明人： George Cunha Cardoso ,  Graham Pennington ,  Yao Rong Wang

IPC分类号： G06K9/00 ,  B60Q11/00 ,  B60Q1/50 ,  G01M17/007

CPC分类号： G06K9/00785 ,  B60Q1/50 ,  B60Q2300/41 ,  B60Q2300/42 ,  G01M17/007 ,  G06K9/00825

摘要： A video-based vehicle headlight state monitoring method and system. A vehicle image can be captured by an image-capturing unit and converted to a grayscale image. The grayscale image can be processed to locate a front license plate and identify a position of a headlight region in front of the vehicle utilizing an algorithm. An average digital count with respect to brightness of the headlight region can be compared with average digital count with respect to brightness of several parts of the vehicle and a background region to determine the vehicle headlights ON/OFF status. The headlights can be considered ON if the digital count level of the headlight region is higher than the digital count of the several parts of the vehicle and the background region. A warning signal can be initiated to turn the headlights on during a special situation utilizing a signal generator.

摘要翻译： 一种视频车载前灯状态监测方法及系统。 车辆图像可以由图像捕获单元捕获并转换成灰度图像。 可以处理灰度图像以定位前车牌，并使用算法识别车前面的前灯区域的位置。 相对于前灯区域的亮度的平均数字计数可以与车辆的几个部分的亮度和背景区域的平均数字计数进行比较，以确定车辆前灯的ON / OFF状态。 如果前灯区域的数字计数水平高于车辆的几个部分和背景区域的数字计数，则前灯可以被认为是ON。 可以在使用信号发生器的特殊情况下启动警告信号来打开前灯。

公开(公告)号：US08744132B2

公开(公告)日：2014-06-03

申请号：US13461266

申请日：2012-05-01

申请人： Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yao Rong Wang ,  Zhigang Fan

发明人： Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yao Rong Wang ,  Zhigang Fan

IPC分类号： G06K9/00 ,  G08G1/16

CPC分类号： G06K9/00771

摘要： A method and a system for determining a parking boundary violation includes receiving video data from a sequence of frames taken from an image capture device monitoring a parking area including at least a single parking space. A boundary is determined for defining at least one parking space in the parking area. A vehicle is detected in the parking area. A determination is made whether the detected vehicle is violating a parking regulation based on a position and size of the vehicle within the boundary.

摘要翻译： 用于确定停车边界违规的方法和系统包括从监视包括至少一个停车位的停车区域的图像捕获设备接收的帧序列中接收视频数据。 确定用于在停车区域中定义至少一个停车位的边界。 在停车区域内检测到车辆。 基于边界内的车辆的位置和大小来确定检测到的车辆是否违反停车规则。

公开(公告)号：US08699103B2

公开(公告)日：2014-04-15

申请号：US11170946

申请日：2005-06-30

申请人： Lalit K. Mestha ,  Yao Rong Wang ,  Zhigang Fan

发明人： Lalit K. Mestha ,  Yao Rong Wang ,  Zhigang Fan

IPC分类号： H04N1/60

CPC分类号： H04N1/6022 ,  H04N1/6041 ,  H04N1/62 ,  H04N1/628

摘要： The present disclosure is directed to a system and method to render spatially uniform memory colors when images printed with CMYK primaries are not rendered uniformly due to output device quality errors. The disclosed method uses an array of sensors to scan a test image. Colors of interest are printed at the desired location first and then adjusted (iterated) to achieve a desired output quality. Iterations are carried out on the image on desired memory colors at the spatial resolution available in the measurement system. Colors of pixels are modified based on position where the pixels will be rendered, thereby compensating for any position/process related differences. Also disclosed is a process for incorporating modified memory colors before rendering, and the extension of memory color concepts to adjust colors for the uniform blocks (not edges), with uniformity defined by user definable thresholds.

摘要翻译： 本公开涉及一种用于在由CMYK原色打印的图像由于输出设备质量错误而不均匀地呈现空间均匀的存储器颜色的系统和方法。 所公开的方法使用传感器阵列来扫描测试图像。 感兴趣的颜色首先打印在所需位置，然后进行调整（迭代）以获得所需的输出质量。 在测量系统中可用的空间分辨率下，对所需存储器颜色的图像进行迭代。 基于像素将被渲染的位置修改像素的颜色，从而补偿任何位置/过程相关差异。 还公开了一种用于在渲染之前并入改进的存储器颜色的过程，以及扩展存储器颜色概念以调整用于统一块（而不是边缘）的颜色，具有由用户可定义阈值定义的均匀性。

公开(公告)号：US08610959B2

公开(公告)日：2013-12-17

申请号：US13029753

申请日：2011-02-17

申请人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Martin S. Maltz

发明人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Martin S. Maltz

IPC分类号： H04N1/40

CPC分类号： H04N1/6016 ,  H04N1/40006

摘要： What is disclosed is a system and method which addresses the problem of inheriting color management intent from a fleet color management LUT into a 4-to-4 cascaded LUT. The LUT is updated starting with a set of patches that either form a uniform or non-uniform grid of the LUT or can be projected to a uniform or non-uniform grid in the CMYK space using, e.g., PCA. A set of L*a*b* target as well a variable that serve the purpose of preserving the GCR and other elements of the fleet profile is obtained by passing the set of CMYK values to the fleet printer model. By iterating on the printer (or the printer model of the engine at the moment of the engine change) and converging to the targets, the engine device cmyk set is obtained. The LUT is formed between the uniform or non-uniform gridded CMYK and the device cmyk.

摘要翻译： 公开的是一种系统和方法，其解决将车队颜色管理LUT的颜色管理意图从继承到4对4级联LUT的问题。 LUT以从LUT的统一或非均匀网格形成的一组补丁开始更新，或者使用例如PCA将其投影到CMYK空间中的均匀或非均匀网格。 通过将一组CMYK值传递给车队打印机模型，获得一组L * a * b *目标以及用于保存GCR和船队简档的其他元素的变量。 通过在打印机（或发动机更换时刻的发动机的打印机型号）上迭代并收敛到目标，获得发动机装置cmyk组。 LUT在均匀或不均匀的网格CMYK和设备cmyk之间形成。

公开(公告)号：US08600227B2

公开(公告)日：2013-12-03

申请号：US13239642

申请日：2011-09-22

申请人： Beilei Xu ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Peter Paul

发明人： Beilei Xu ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Peter Paul

IPC分类号： G03B11/00

CPC分类号： G06K9/209 ,  G01J3/2823 ,  G01J3/36 ,  G02B5/201 ,  G02B5/208 ,  G03B11/00 ,  G06K9/00255 ,  G06K2009/00932

摘要： A filter array for a multi-resolution multi-spectral camera system is described which not only captures 2D images at multiple wavelength bands simultaneously but also at a spatial resolution that meets the demand for spatial feature extraction. The present system optimizes filter bands that provide high image contrast at the highest possible resolution to enable spatial feature extraction and other wavelength bands at lower resolution to achieve maximum number of wavelength bands (e.g. spectral resolution) for multi-spectral analysis. After determining the required spatial resolution and number of wavelength bands for spectral analysis, multiple filters are arranged in a geometric pattern with each filter being designed to have specified wavelength and spatial resolution. Physical sizes of filters differ within each filter group. This maximizes the detector usage while optimizing the trade-off between spatial resolution and spectral resolution. Filter gaps are fixed or tuned to wavelengths of interest.

摘要翻译： 描述了用于多分辨率多光谱照相机系统的滤光器阵列，其不仅在多个波长带同时捕获2D图像，而且以满足空间特征提取需求的空间分辨率捕获。 本系统优化以最高可能分辨率提供高图像对比度的滤波器频带，以便能够以较低分辨率进行空间特征提取和其他波长带，以实现用于多光谱分析的最大数量的波段（例如光谱分辨率）。 在确定所需的空间分辨率和用于频谱分析的波长带数之后，多个滤波器以几何图形排列，每个滤波器被设计为具有指定的波长和空间分辨率。 每个过滤器组中过滤器的物理尺寸不同。 这最大限度地提高了检测器的使用率，同时优化了空间分辨率和光谱分辨率之间的折衷。 滤波器间隙固定或调谐到感兴趣的波长。

公开(公告)号：US08456700B2

公开(公告)日：2013-06-04

申请号：US12645859

申请日：2009-12-23

申请人： Lalit Keshav Mestha ,  Yonghui Zhao ,  Yao Rong Wang

发明人： Lalit Keshav Mestha ,  Yonghui Zhao ,  Yao Rong Wang

IPC分类号： G06F15/00 ,  H04N1/40 ,  G06K9/00

CPC分类号： G01J3/46 ,  G01J3/462 ,  G09G2340/06 ,  G09G2358/00 ,  G09G2380/00 ,  H04N1/6033 ,  H04N1/62

摘要： What is disclosed is a novel system and method for generating a spectral matching guide for spot color print applications. Spectral matching values are determined for spot colors obtained from a library of spot colors. A spectral matching guide is created from the spot colors and their respective spectral matching values in a manner more fully disclosed herein. Thereafter, when a user desires to render a job in a particular spot color, the associated spectral matching value for that spot color can be obtained from the spectral matching guide. In other embodiments, recommendations in the form of a suggested printer to use, a media type, a halftone screen, and other meaningful assistance can be provided for selection of spot colors for a given print/copy job that are less sensitive to varying illuminations. The present spectral matching guide provides meaningful extensions in spectral color reproduction in print/copy job environments.

摘要翻译： 公开的是用于产生专色印刷应用的光谱匹配指南的新型系统和方法。 确定从专色库获得的专色的光谱匹配值。 以这种更全面地公开的方式，从专色和它们各自的光谱匹配值产生光谱匹配指南。 此后，当用户期望以特定专色呈现作品时，可以从光谱匹配指南获得该专色的相关的光谱匹配值。 在其他实施例中，可以提供建议使用的打印机的形式的建议，介质类型，半色调屏幕和其他有意义的帮助，用于对对变化的照明不太敏感的给定打印/复印作业的专色的选择。 本光谱匹配指南为打印/复印作业环境中的色彩再现提供了有意义的扩展。

公开(公告)号：US08456697B2

公开(公告)日：2013-06-04

申请号：US12504332

申请日：2009-07-16

申请人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Gil

发明人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Gil

IPC分类号： G06F15/00 ,  H04N1/40 ,  G06K9/00

CPC分类号： H04N1/60

摘要： A methodology is disclosed to achieve adaptive illumination independent matching of spot colors. In one embodiment, the methodology includes an iterative process to determine a variety device specific recipes for spot colors across different illumination spectra, and then automatically choosing and/or recommending the optimal recipe that provides the lowest color dispersion across a variety of illuminants under consideration. This approach may be used with a variety of gamut mapping techniques. According to a further embodiment, the methodology may be used with a ray-based gamut mapping method.

摘要翻译： 公开了一种实现专色自适应照明独立匹配的方法。 在一个实施例中，该方法包括迭代过程以确定不同照明光谱上的专色的特定配方，然后自动选择和/或推荐在所考虑的各种发光体下提供最低色散的最佳配方。 该方法可以与各种色域映射技术一起使用。 根据另一实施例，该方法可以与基于射线的色域映射方法一起使用。

公开(公告)号：US08305636B2

公开(公告)日：2012-11-06

申请号：US12391443

申请日：2009-02-24

申请人： Zhigang Fan ,  Martin S. Maltz ,  Yao Rong Wang ,  Alvaro Enrique Gil

发明人： Zhigang Fan ,  Martin S. Maltz ,  Yao Rong Wang ,  Alvaro Enrique Gil

IPC分类号： G06F15/00

CPC分类号： H04N1/40

摘要： A system and methods for performing UCR/GCR (Undercolor Removal/Gray Color Replacement) in a digital printer is provided. The system and method includes maximizing the linearity of a color mapping function mapping a device independent color to a device dependent color through linear filtering and performing color projection to ensure color accuracy. The system and methods reduces graininess of printed color images having flesh-tones by also including a K reduction step.

摘要翻译： 提供了一种用于在数字打印机中执行UCR / GCR（底色去除/灰色替换）的系统和方法。 该系统和方法包括通过线性滤波使得设备独立颜色映射到与器件相关的颜色的颜色映射函数的最大化，并执行颜色投影以确保颜色精度。 该系统和方法通过还包括K还原步骤来减少具有肉色的印刷彩色图像的颗粒度。

公开(公告)号：US08159715B2

公开(公告)日：2012-04-17

申请号：US12127643

申请日：2008-05-27

申请人： Lalit K. Mestha ,  Alvaro E. Gil ,  Yao Rong Wang ,  Zhigang Fan

发明人： Lalit K. Mestha ,  Alvaro E. Gil ,  Yao Rong Wang ,  Zhigang Fan

IPC分类号： H04N1/60 ,  H04N1/46 ,  H04N1/40 ,  G03F3/08

CPC分类号： H04N1/603

摘要： This disclosure provides methods, apparatus and systems for generating a profile for a printing device. Specifically, the profile is generated by selecting a GCR profile from a plurality of GCR profiles and mapping a plurality of nodes to a device dependent color space as a function of the selected GCR profiles.

摘要翻译： 本公开提供了用于生成打印装置的轮廓的方法，装置和系统。 具体地，通过从多个GCR简档中选择GCR简档并根据所选择的GCR简档将多个节点映射到依赖于设备的颜色空间来生成简档。