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公开(公告)号：US20170161571A1
公开(公告)日：2017-06-08
申请号：US14957968
申请日：2015-12-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： QINGRONG ZHAO , JINSONG WANG , QI ZHANG , BAKHTIAR B. LITKOUHI , WENDE ZHANG
CPC classification number: G06K9/00798 , B60Q9/00 , B60R1/00 , B60R11/04 , B60R2300/8053 , G06K9/00791 , G06K9/4661 , H04N7/181
Abstract: A method for determining a snow covered surface condition of a path of travel. A beam of light is emitted at a surface of the path of travel by a light emitting source. An image of a path of travel surface is captured by an image capture device. The image capture device is mounted on the vehicle and captures an image in a downward direction. The captured image captures the beam of light emitted on the path of travel surface. Analyzing a subsurface scattering of the light generated on the path of travel surface by a processor. A determination is made whether snow is present on the path of travel. A snow covered path of travel surface signal is generated in response to the identification of snow on the path of travel.
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公开(公告)号：US20160167669A1
公开(公告)日：2016-06-16
申请号：US14568656
申请日：2014-12-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： QINGRONG ZHAO , QI ZHANG , JINSONG WANG , BAKHTIAR LITKOUHI , WENDE ZHANG
CPC classification number: B60W40/06 , B60W2420/42 , G06K9/00791 , H04N5/2256
Abstract: Systems and methods use an image of a road surface that is generated by a camera. The image includes a pattern from a light source. A region of interest in the image is determined based on the pattern from the light source. A total area is determined that includes at least part of the region of interest and an area adjacent the region of interest. A feature vector is extracted based on the region of interest and the total area. A road condition is determined based on the feature vector and a classifier.
Abstract translation: 系统和方法使用摄像机生成的路面图像。 图像包括来自光源的图案。 基于来自光源的图案确定图像中的感兴趣区域。 确定总面积，其包括感兴趣区域的至少一部分和与感兴趣区域相邻的区域。 基于感兴趣区域和总面积提取特征向量。 基于特征向量和分类器确定道路状况。
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公开(公告)号：US20170282869A1
公开(公告)日：2017-10-05
申请号：US15084648
申请日：2016-03-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： WEI TONG , QINGRONG ZHAO , BAKHTIAR B. LITKOUHI , SHUQING ZENG
CPC classification number: B60T8/171 , B60Q9/00 , B60T7/12 , B60T7/22 , B60T8/175 , B60T2201/022 , B60T2210/10 , B60T2210/12
Abstract: A method of determining a surface condition of a path of travel. A plurality of images is captured of a surface of the path of travel by an image capture device. The image capture device captures images at varying scales. A feature extraction technique is applied by a feature extraction module to each of the scaled images. A fusion technique is applied, by the processor, to the extracted features for identifying the surface condition of the path of travel. A road surface condition signal provide to a control device. The control device applies the road surface condition signal to mitigate the wet road surface condition.
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4.发明申请METHODS AND SYSTEMS FOR ESTIMATING ROAD SURFACE FRICTION COEFFICIENT USING SELF ALIGNING TORQUE 审中-公开使用自调整扭矩估算道路表面摩擦系数的方法和系统公开(公告)号：US20160101782A1
公开(公告)日：2016-04-14
申请号：US14510862
申请日：2014-10-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： YOUSSEF A. GHONEIM , QINGRONG ZHAO , QI ZHANG , BAKHTIAR B. LITKOUHI , YINGMEI SI , DAVID M. SIDLOSKY , VALARIE V. BOATMAN , SAMI AHMED
IPC: B60W40/06
CPC classification number: B60W40/068 , B60W2520/10 , B60W2520/125 , B60W2520/14 , B60W2520/20 , B60W2540/18
Abstract: Methods and systems for determining road surface information in a vehicle. In one embodiment, the method includes: determining at least one condition assessment value based on steering data; determining a feature set to include at least one of self-aligning torque (SAT), slip angle, SAT variance, steering rate, and lateral acceleration based on the condition assessment value; processing steering data obtained during a steering maneuver and associated with the feature set using a pattern classification technique; and determining a surface type based on the processing.
Abstract translation: 用于确定车辆中路面信息的方法和系统。 在一个实施例中，该方法包括：基于转向数据确定至少一个条件评估值; 基于条件评估值确定特征集合以包括自对准转矩（SAT），滑移角，SAT方差，转向速率和横向加速度中的至少一个; 使用模式分类技术处理在转向操纵期间获得并与特征集相关联的转向数据; 以及基于所述处理来确定表面类型。
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公开(公告)号：US20180060674A1
公开(公告)日：2018-03-01
申请号：US15245536
申请日：2016-08-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： QINGRONG ZHAO , BAKHTIAR B. LITKOUHI , QI ZHANG , JINSONG WANG
CPC classification number: G06K9/00791 , B60W40/06 , B60W2420/42 , B60W2550/14 , B60W2710/06 , B60W2710/18 , B60W2750/40 , G06K9/20 , G06K9/4652 , G06K9/6267 , G06K9/6293
Abstract: A method for determining wetness on a path of travel. A surface of the path of travel is captured by at least one image capture device. A plurality of wet surface detection techniques is applied to the at least one image. An analysis for each wet surface detection technique is determined in real-time of whether the surface of the path of travel is wet. Each analysis independently determines whether the path of travel is wet. Each analysis by each wet surface detection technique is input to a fusion and decision making module. Each analysis determined by each wet surface detection technique is weighted within the fusion and decision making module by comprehensive analysis of weather information, geology information, and vehicle motions. A wet surface detection signal is provided to a control device. The control device applies the wet surface detection signal to mitigate the wet surface condition.
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Patent Agency Ranking
公开(公告)号：US20180059677A1
公开(公告)日：2018-03-01
申请号：US15245522
申请日：2016-08-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： QINGRONG ZHAO , QI ZHANG , BAKHTIAR B. LITKOUHI , JINSONG WANG
CPC classification number: G05D1/0246 , B60T8/00 , B60T8/17 , B60T8/172 , B60T2210/13 , G01B11/0616 , G06K9/00791 , G06K9/78 , G06T7/00
Abstract: A method for determining a thickness of water on a path of travel. A plurality of images of a surface of the path of travel is captured by an image capture device over a predetermined sampling period. A plurality of wet surface detection techniques are applied to each of the images. A detection rate is determined in real-time for each wet surface detection technique. A detection rate trigger condition is determined as a function of a velocity of the vehicle for each detection rate. The real-time determined detection rate trigger conditions are compared to predetermined detection rate trigger conditions in a classification module to identify matching results pattern. A water film thickness associated with the matching results pattern is identified in the classification module. A water film thickness signal is provided to a control device. The control device applies the water film thickness signal to mitigate the wet surface condition.
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公开(公告)号：US20170161570A1
公开(公告)日：2017-06-08
申请号：US14957953
申请日：2015-12-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： QINGRONG ZHAO , QI ZHANG , JINSONG WANG , BAKHTIAR B. LITKOUHI
CPC classification number: G06K9/00798 , B60W40/06 , B60W2420/42 , B60W2550/14 , B60W2710/06 , B60W2710/18 , B60W2720/40 , B60W2750/40 , G06K9/00791 , G06K9/3233 , G06K9/4604 , G06K9/4647 , G06K9/522 , G06K9/6227 , G06T7/11 , G06T7/40 , G06T2207/20024 , G06T2207/20081 , G06T2207/30256 , H04N7/183
Abstract: A method for determining a wet surface condition of a road. An image of a road surface is captured by an image capture device of the host vehicle. The image capture device is mounted on a side of the host vehicle and captures an image in a downward direction. A region of interest rearward of the wheel of the host vehicle is identified in the captured image by a processor. The region of interest is representative of where rearward splash as generated by the wheel occurs. A determination is made whether precipitation is present in the region of interest by applying a filter to the image. A wet road surface signal is generated in response to the identification of precipitation in the region of interest.
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8.发明申请VISION-BASED WET ROAD SURFACE DETECTION USING MIRRORED AND REAL IMAGES 审中-公开基于VISION的湿润路面检测使用镜像和真实图像公开(公告)号：US20150363654A1
公开(公告)日：2015-12-17
申请号：US14302605
申请日：2014-06-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： QINGRONG ZHAO , WENDE ZHANG , JINSONG WANG , BAKHTIAR BRIAN LITKOUHI
CPC classification number: G06K9/00805 , G06K9/00798 , G06T7/68 , G06T2207/30256
Abstract: A method for determining a wet road surface condition on a road. An image exterior of the vehicle is captured by an image capture device. A real object and a virtual object are detected in the captured image. A feature point is identified on the real object and on the virtual object. A potential virtual object associated with the real object is identified on a ground surface of the road in the captured image. The feature point detected on the real object is compared with the feature point detected on the virtual object. A determination is made whether the ground surface includes a mirror effect reflective surface in response to the feature point detected on the real object matching the feature point detected on the virtual object. A wet driving surface indicating signal is generated in response to the determination that the ground surface includes a mirror effect reflective surface.
Abstract translation: 一种用于确定道路上湿路面状况的方法。 车辆的图像外观由图像捕获装置捕获。 在捕获的图像中检测到真实对象和虚拟对象。 在真实对象和虚拟对象上标识特征点。 在被拍摄图像中的道路的地面上识别与真实物体相关联的潜在虚拟物体。 将实际物体上检测到的特征点与虚拟对象上检测到的特征点进行比较。 响应于在与虚拟对象上检测到的特征点匹配的真实对象上检测到的特征点，确定地面是否包括镜面效应反射表面。 响应于地面包括反射镜反射表面的确定，产生湿驱动表面指示信号。
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公开(公告)号：US20180215391A1
公开(公告)日：2018-08-02
申请号：US15419602
申请日：2017-01-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： JINZHU CHEN , FAN BAI , QINGRONG ZHAO , BAKHTIAR B. LITKOUHI
CPC classification number: B60W40/06 , B60W2510/22 , B60W2520/10 , B60W2540/10 , B60W2540/12 , B60W2540/18 , B60W2540/30 , B60W2550/40 , B60W2750/40 , G01N33/42 , G07C5/008
Abstract: Methods and systems are provided for determining a road surface condition. In one embodiment, a method includes: receiving vehicle data; constructing, by the processor, a driver behavioral model based on the vehicle data; determining, by the processor, a surface condition based on the driver behavioral model; and generating a signal based on the surface condition.
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公开(公告)号：US20180043900A1
公开(公告)日：2018-02-15
申请号：US15236106
申请日：2016-08-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： YADOLLAH SABRI , SIMON E. ZIMMERMAN , YINGMEI SI , STEVEN T. SCHWEITZER , QINGRONG ZHAO , QI ZHANG , NIKOLAI K. MOSHCHUK
IPC: B60W40/068 , B60W40/105 , B60W40/114 , G05D1/00 , B60W50/14
CPC classification number: B60W40/068 , B60W40/105 , B60W40/114 , B60W50/14 , B60W2520/10 , B60W2520/12 , B60W2520/14 , B60W2550/148 , B60W2710/202 , G05D1/0061
Abstract: Methods and systems are provided for determining a road surface friction coefficient and controlling a feature of the vehicle based thereon. In one embodiment, a method includes: receiving signals from an electronic power steering system and an inertial measurement unit; estimating parameters associated with an electronic power steering system model using an iterative optimization method; calculating an electronic power steering system variable using the electronic power steering system model, the estimated parameters and one or more of the received signals; determining whether the calculated electronic power steering system variable satisfies a fitness criterion; and when the calculated electronic power steering system variable does satisfy the fitness criterion, determining a road surface friction coefficient based on at least one of the estimated parameters.
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