公开(公告)号：US20120057634A1

公开(公告)日：2012-03-08

申请号：US13225269

申请日：2011-09-02

申请人： Fang SHI ,  Jin Ming ,  Qi Wu ,  Fan You ,  Kai Bao

发明人： Fang SHI ,  Jin Ming ,  Qi Wu ,  Fan You ,  Kai Bao

IPC分类号： H04N7/26

CPC分类号： H04N19/52 ,  H04N5/145 ,  H04N19/115 ,  H04N19/124 ,  H04N19/164 ,  H04N19/176 ,  H04N19/198 ,  H04N19/51 ,  H04N19/61

摘要： Video analytics systems and methods are described that typically comprise a video encoder operable to generate macroblock video analytics metadata (VAMD) from a video frame. Functional modules receive the VAMD and an encoded version of the video frame is configured to generate video analytics information related to the frame using the VAMD and the encoded video frame. The downstream decoder can use the VAMD to obtain a global motion vector related to the frame, detect and track motion of an object within the frame and monitor a line provided or found within the frame. Traversals of the line by a moving object can be detected and counted using information in the VAMD and the line may be part of a polygon that delineates an area to be monitored within the encoded frame. The VAMD can comprise macroblock level and video frame level information.

摘要翻译： 描述了视频分析系统和方法，其通常包括可操作以从视频帧生成宏块视频分析元数据（VAMD）的视频编码器。 功能模块接收VAMD，视频帧的编码版本被配置为使用VAMD和编码视频帧生成与帧相关的视频分析信息。 下游解码器可以使用VAMD来获得与帧相关的全局运动矢量，检测和跟踪帧内的对象的运动并监视在帧内提供或发现的线。 可以使用VAMD中的信息来检测和计数运动对象的行的遍历，并且线可以是描绘编码帧内要监视的区域的多边形的一部分。 VAMD可以包括宏块级和视频帧级信息。

公开(公告)号：US20120008021A1

公开(公告)日：2012-01-12

申请号：US12830525

申请日：2010-07-06

申请人： Wende Zhang ,  Qi Wu ,  Vijayakumar Bhagavatula

发明人： Wende Zhang ,  Qi Wu ,  Vijayakumar Bhagavatula

IPC分类号： H04N9/64

CPC分类号： G06K9/00791 ,  G06K9/346 ,  G06T5/007 ,  G06T7/12 ,  G06T2207/10024 ,  G06T2207/30252

摘要： A method for is provided for creating a shadow-reduced image from a captured image for distinguishing a clear path of travel. Each pixel of a captured input image is plotted according to a two dimensional logarithmic graph. A specific color set relating to an associated color value of a clear path. A linear illumination-invariant axis is determined as a function of the specific color set. An illumination direction for the linear illumination-invariant axis is determined. A log-chromaticity value of each plotted pixel of the specific color set is projected on the axis. Edges in the input image and the illumination-invariant image domain are identified. The identified edges of the input image are compared to identify edges in the illumination-invariant image domain. A determination is made whether a shadow edge is present in response to comparing the edges. A shadow-reduced image is generated for scene analysis by a vehicle vision-based system.

摘要翻译： 提供了一种用于从捕获的图像创建阴影缩小图像以区分清晰的行进路径的方法。 捕获的输入图像的每个像素根据二维对数图进行绘制。 与清晰路径相关联的颜色值相关的特定颜色集。 线性照明不变轴被确定为特定颜色集合的函数。 确定线性照明不变轴的照明方向。 特定颜色集合的每个绘制像素的对数色度值投影在轴上。 识别输入图像和照明不变图像域中的边缘。 将识别的输入图像的边缘进行比较，以识别照明不变图像域中的边缘。 确定响应于比较边缘是否存在阴影边缘。 通过基于车辆视觉的系统生成用于场景分析的阴影缩小图像。

公开(公告)号：US08049883B2

公开(公告)日：2011-11-01

申请号：US12394109

申请日：2009-02-27

申请人： Michael B. Webb ,  Qi Wu

发明人： Michael B. Webb ,  Qi Wu

IPC分类号： G01J3/28

CPC分类号： G01J3/2803 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/4338 ,  G01N21/7743

摘要： A swept wavelength interrogation system includes a tunable light source for outputting a light beam that is tunable over a range of wavelengths and an optical reader head for distributing the light beam among a plurality of sensors and for measuring response spectra from the sensors. A wavelength-tracking device measures centroid wavelengths of the light beam. A processor calculates a centroid wavelength of the response spectra from the sensors based on the measured centroid wavelengths of the light beam.

摘要翻译： 扫频波长询问系统包括用于输出可在波长范围内调节的光束的可调谐光源和用于在多个传感器之间分配光束并用于测量来自传感器的响应光谱的光学读取头。 波长跟踪装置测量光束的质心波长。 处理器基于所测量的光束的质心波长来计算来自传感器的响应谱的质心波长。

公开(公告)号：US20110238382A1

公开(公告)日：2011-09-29

申请号：US13151605

申请日：2011-06-02

申请人： Jacques Gollier ,  Garrett A. Piech ,  Michael B. Webb ,  Qi Wu

发明人： Jacques Gollier ,  Garrett A. Piech ,  Michael B. Webb ,  Qi Wu

IPC分类号： G06F15/00 ,  G01J3/28

CPC分类号： G01J3/28 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/1895 ,  G01J3/2803 ,  G01N21/7743

摘要： An optical interrogation system is described herein that can interrogate a label-independent-detection (LID) biosensor and monitor a biological event on top of the biosensor without suffering from problematical parasitic reflections and/or problematical pixelation effects.

摘要翻译： 本文描述了一种光询问系统，其可以询问标签无关检测（LID）生物传感器并在生物传感器顶部监测生物事件，而不会遇到有问题的寄生反射和/或有问题的像素化效应。

公开(公告)号：US20110109909A1

公开(公告)日：2011-05-12

申请号：US12939606

申请日：2010-11-04

申请人： Qi Wu

发明人： Qi Wu

IPC分类号： G01N21/55 ,  F21V9/00 ,  F21V11/00 ,  F21V9/14

CPC分类号： G01N21/774 ,  G01J3/10 ,  G01J3/12 ,  G01J3/26 ,  G01N2021/7776 ,  G01N2201/062

摘要： A tunable light source for interrogating at least one resonant waveguide grating (RWG) biosensor having a resonance linewidth. The tunable light source includes a broadband light source that emits a light beam having a first spectral bandwidth greater than the RWG biosensor resonance linewidth. The broadband light source may be substantially spatially incoherent. A tunable optical filter having a tunable spectral linewidth is arranged to receive and filter the light beam to cause the light beam to have a second spectral bandwidth substantially the same as the RWG biosensor resonance linewidth. Label-independent optical readers that employ the tunable light source are also disclosed.

摘要翻译： 一种用于询问至少一个具有谐振线宽度的谐振波导光栅（RWG）生物传感器的可调谐光源。 可调谐光源包括宽带光源，其发射具有大于RWG生物传感器谐振线宽的第一光谱带宽的光束。 宽带光源可能基本上在空间上不相干。 具有可调谐谱线宽度的可调谐滤光器被布置成接收和过滤光束以使得光束具有与RWG生物传感器谐振线宽基本相同的第二光谱带宽。 还公开了采用可调谐光源的标签无关光学读取器。

公开(公告)号：US20100214973A1

公开(公告)日：2010-08-26

申请号：US12597843

申请日：2008-04-25

申请人： Eun-Taek Lim ,  Hyoung-Kyu Lim ,  Pan-Yuh Joo ,  Qi Wu ,  Zongchuang Liang

发明人： Eun-Taek Lim ,  Hyoung-Kyu Lim ,  Pan-Yuh Joo ,  Qi Wu ,  Zongchuang Liang

IPC分类号： H04B7/14

CPC分类号： H04W76/10 ,  H04L51/38 ,  H04W88/085

摘要： A method for forwarding direct message in partial function OFDMA relay system is proposed in present invention. In present invention, the operations like forwarding and reflecting are fixed for the PFRS. Therefore, the BS performs scheduling according to the fixed operations so as to make the PFRS actually has the function of direct message forwarding.

摘要翻译： 本发明提出了一种在部分功能OFDMA中继系统中转发直接消息的方法。 在本发明中，针对PFRS的转发和反射操作是固定的。 因此，BS根据固定操作进行调度，使得PFRS实际上具有直接消息转发的功能。

公开(公告)号：US20100104137A1

公开(公告)日：2010-04-29

申请号：US12581766

申请日：2009-10-19

申请人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

发明人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

IPC分类号： G06K9/00

CPC分类号： G06K9/4609 ,  B60W2420/42 ,  G06K9/00798 ,  G06K9/00805

摘要： A method for detecting a clear path of travel for a vehicle utilizing an image generated by a camera device located upon the vehicle includes monitoring the image, and generating a plurality of patches onto the image, wherein the patches are collectively arranged to substantially include the clear path of travel. Feature extraction is utilized to analyze the patches and includes convolving each of the patches with a feature detection filter generating a feature-based filter response, extracting features based upon the feature-based filter response, and determining each of the patches to represent the clear path of travel or to not represent the clear path of travel based upon the extracted features. The clear path of travel is determined based upon the plurality of patches, and is utilized to navigate the vehicle.

摘要翻译： 用于利用位于车辆上的照相机装置生成的图像来检测车辆的清晰行驶路径的方法包括监视图像，并在图像上生成多个贴片，其中所述贴片被集体布置成基本上包括清晰的 旅行路线 使用特征提取来分析补丁，并且包括使用生成基于特征的过滤器响应的特征检测过滤器对每个补丁进行卷积，基于基于特征的过滤器响应来提取特征，以及确定每个补丁以表示清除路径 的旅行或不代表基于提取的特征的明确的旅行路径。 基于多个补片确定行驶的清晰路径，并且用于导航车辆。

公开(公告)号：US20100097458A1

公开(公告)日：2010-04-22

申请号：US12581792

申请日：2009-10-19

申请人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

发明人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

IPC分类号： H04N7/18

CPC分类号： G06K9/6202 ,  B60W2420/42 ,  G06K9/00798 ,  G06K9/00805 ,  G06K9/3233 ,  G06K9/4609 ,  G06K9/6205 ,  G06K9/66 ,  G06T7/74

摘要： A method for detecting a clear path of travel for a vehicle using a current image generated by a camera includes defining an exemplary clear path for each of a plurality of sample images, identifying features within each of the plurality of sample images, monitoring the current image generated by the camera, identifying features within the current image, matching the current image to at least one of the sample images based upon the identified features within the current image and the identified features within the plurality of sample images, determining a clear path of travel based upon the matching and the exemplary clear path for each of the matched sample images, and utilizing the clear path of travel to navigate the vehicle.

摘要翻译： 使用由相机生成的当前图像来检测车辆的清晰行驶路径的方法包括为多个样本图像中的每一个定义示例性清晰路径，识别多个样本图像中的每一个内的特征，监视当前图像 由相机生成，识别当前图像内的特征，基于当前图像内的所识别的特征和多个样本图像中识别的特征，将当前图像与至少一个样本图像匹配，确定行进路线 基于每个匹配的样本图像的匹配和示例性清晰路径，并且利用清晰的行进路径来导航车辆。

公开(公告)号：US20100097457A1

公开(公告)日：2010-04-22

申请号：US12581781

申请日：2009-10-19

申请人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

发明人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

IPC分类号： H04N7/18

CPC分类号： G06K9/00798 ,  B60W2420/42 ,  G06K9/00805

摘要： A method for detecting a clear path of travel for a vehicle utilizing analysis of an image generated by a camera device located upon the vehicle includes monitoring the image, identifying through patch-based clear path detection analysis of the image a first patch within the image that indicates a not clear path, analyzing the first patch through patch smoothing, invalidating the first patch based upon the analyzing the first patch through patch smoothing, utilizing the invalidated first patch to define a clear path of travel for the vehicle, and utilizing the clear path of travel to navigate the vehicle.

摘要翻译： 利用对位于车辆上的相机装置产生的图像进行分析来检测车辆的清晰路径的方法包括监视图像，通过基于图像的基于图像的清晰路径检测分析识别图像中的第一贴片来识别， 指示不清楚的路径，通过补丁平滑来分析第一贴片，基于通过贴片平滑分析第一贴片使第一贴片无效，利用无效的第一贴片来定义车辆的清晰行进路径，以及利用清晰路径 的旅行导航车辆。

公开(公告)号：US20100097455A1

公开(公告)日：2010-04-22

申请号：US12581659

申请日：2009-10-19

申请人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

发明人： Wende Zhang ,  Qi Wu ,  Tsuhan Chen

IPC分类号： H04N7/18 ,  G05D1/00

CPC分类号： G06K9/00798 ,  B60W2420/42

摘要： A method for estimating a vanishing point in a roadway using a current image generated by a camera on a vehicle includes defining an exemplary vanishing point for each of a plurality of sample images, identifying features within each of the plurality of sample images, monitoring the current image generated by the camera, identifying features within the current image, matching the current image to at least one of the sample images based upon the identified features within the current image and the identified features within the plurality of sample images, determining a vanishing point based upon the matching and the exemplary vanishing points for each of the matched sample images, and utilizing the vanishing point to navigate the vehicle.

摘要翻译： 使用车辆上的照相机产生的当前图像来估计道路中的消失点的方法包括为多个样本图像中的每一个定义示例性消失点，识别多个样本图像中的每一个内的特征，监视当前 由相机生成的图像，识别当前图像内的特征，基于当前图像内的所识别的特征以及多个样本图像中识别的特征，将当前图像与至少一个样本图像匹配，基于消失点 对于每个匹配的样本图像的匹配和示例性消失点，并且利用消失点来导航车辆。