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公开(公告)号：US09965677B2
公开(公告)日：2018-05-08
申请号：US14564347
申请日：2014-12-09
Applicant: Xerox Corporation
Inventor： Orhan Bulan , Howard Mizes , Vladimir Kozitsky , Aaron M. Burry
CPC classification number: G06K9/00456 , G06K9/00771 , G06K9/325 , G06K2209/01 , G06K2209/15
Abstract: Methods and systems for localizing numbers and characters in captured images. A side image of a vehicle captured by one or more cameras can be preprocessed to determine a region of interest. A confidence value of series of windows within regions of interest of different sizes and aspect ratios containing a structure of interest can be calculated. Highest confidence candidate regions can then be identified with respect to the regions of interest and at least one region adjacent to the highest confidence candidate regions. An OCR operation can then be performed in the adjacent region. An identifier can then be returned from the adjacent region in order to localize numbers and characters in the side image of the vehicle.
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公开(公告)号：US09852631B2
公开(公告)日：2017-12-26
申请号：US15060830
申请日：2016-03-04
Applicant: Xerox Corporation
Inventor： Graham Pennington , Hao Wu , Howard Mizes , Wencheng Wu , Rakesh Kulkarni
CPC classification number: G08G1/147 , G06K9/00771 , G06K9/00812 , G06K9/3208 , G06K9/4604 , G08G1/142 , G08G1/144 , G08G1/146
Abstract: A method, system, and apparatus for parking occupancy detection comprises collecting video of a blockface with at least one video recording module, identifying a number of possible parking spaces along the blockface in the collected video, defining, a region of interest for each of the possible parking spaces, detecting a time dependent occupancy of the defined regions of interest for each of the possible parking spaces, and reporting the time dependent occupancy. Drift correction of the recorded video and ground truth comparisons of occupancy determinations may be provided.
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公开(公告)号：US20180012101A1
公开(公告)日：2018-01-11
申请号：US15205146
申请日：2016-07-08
Applicant: Xerox Corporation
Inventor： Howard Mizes , Vladimir Kozitsky
CPC classification number: G06K9/346 , G06K9/00771 , G06K2209/01 , G06K2209/15 , G06T5/008 , G06T7/0002 , G06T2207/20104
Abstract: A method, system, and apparatus for license plate relighting comprises collecting an image of a license plate, performing license plate recognition on the image of the license plate; calculating a confidence metric for the license plate recognition; and performing a shadow detection and relighting method if the confidence metric is below a predetermined threshold, comprising identifying a shaded region of said license plate, determining if the shaded region is actually shaded, and relighting the actually shaded region.
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公开(公告)号：US20170257572A1
公开(公告)日：2017-09-07
申请号：US15058660
申请日：2016-03-02
Applicant: Xerox Corporation
Inventor： Hao Wu , Howard Mizes , Wencheng Wu , Graham Pennington , Rakesh Kulkarni
CPC classification number: H04N5/23254 , G06K9/00765 , G06K9/00785 , G06K9/209 , G06T5/003 , G06T5/50 , G06T7/174 , G06T7/215 , G06T7/33 , G06T2207/10016 , G06T2207/10024 , H04N5/23267
Abstract: A method, system, and apparatus for video frame alignment comprises collecting video data comprising at least two video frames; extracting a line profile along at least one line profile in each of the at least two video frames; selecting one of the at least two video frames as a reference video frame; segmenting each of the at least one line profiles into a plurality of segmented line profile group segments; aligning the plurality of segmented line profiles with the segmented line profiles in the reference video frame; translating each of the at least two video frames for each of the plurality of corresponding segmented line profile alignments; and removing a camera shift from the at least two video frames according to the translation and alignment of the plurality of segmented line profiles with the plurality of segmented line profile in the reference video frame.
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公开(公告)号：US20170213463A1
公开(公告)日：2017-07-27
申请号：US15004832
申请日：2016-01-22
Applicant: Xerox Corporation
Inventor： Howard Mizes , Rakesh Suresh Kulkarni , Peter Paul
Abstract: A method, non-transitory computer readable medium and apparatus for calculating a by spot occupancy of a parking lot are disclosed. For example, the method includes receiving an indication of a triggering event, sending a query to receive a first image and a second image in response to the triggering event, receiving the first image and the second image, analyzing the first image and the second image to determine a change in an occupancy status of a parking spot within the parking lot and calculating the by spot occupancy of the parking lot based on the change in the occupancy status of the parking spot.
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Patent Agency Ranking
公开(公告)号：US20160171328A1
公开(公告)日：2016-06-16
申请号：US14567000
申请日：2014-12-11
Applicant: Xerox Corporation
Inventor： Orhan Bulan , Howard Mizes , Vladimir Kozitsky , Aaron M. Burry
CPC classification number: G06K9/3241 , G06K9/3258 , G06K9/723 , G06K2209/01 , G06K2209/15
Abstract: Methods and systems for tag recognition in captured images. A candidate region can be localized from regions of interest with respect to a tag and a tag number shown in the regions of interest within a side image of a vehicle. A number of confidence levels can then be calculated with respect to each digit recognized as a result of an optical character recognition operation performed with respect to the tag number. Optimal candidates within the candidate region can be determined for the tag number based on individual character confidence levels among the confidence levels. Optimal candidates from a pool of valid tag numbers can then be validated using prior appearance probabilities and data returned, which is indicative of the most probable tag to be detected to improve image recognition accuracy.
Abstract translation: 捕获图像中标签识别的方法和系统。 候选区域可以相对于标签和感兴趣区域中所示的在车辆侧面图像内的标签号进行定位。 然后可以相对于作为对标签号执行的光学字符识别操作的结果识别的每个数字来计算多个置信水平。 可以基于置信水平中的个人字符置信水平来确定候选区域内的最佳候选人的标签号码。 然后可以使用先前出现的概率和返回的数据来验证来自有效标签号码池的最佳候选者，这表示要检测的最可能标签以提高图像识别精度。
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公开(公告)号：US11302191B2
公开(公告)日：2022-04-12
申请号：US15004832
申请日：2016-01-22
Applicant: Xerox Corporation
Inventor： Howard Mizes , Rakesh Suresh Kulkarni , Peter Paul
Abstract: A method, non-transitory computer readable medium and apparatus for calculating a by spot occupancy of a parking lot are disclosed. For example, the method includes receiving an indication of a triggering event, sending a query to receive a first image and a second image in response to the triggering event, receiving the first image and the second image, analyzing the first image and the second image to determine a change in an occupancy status of a parking spot within the parking lot and calculating the by spot occupancy of the parking lot based on the change in the occupancy status of the parking spot.
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公开(公告)号：US10026004B2
公开(公告)日：2018-07-17
申请号：US15205146
申请日：2016-07-08
Applicant: Xerox Corporation
Inventor： Howard Mizes , Vladimir Kozitsky
Abstract: A method, system, and apparatus for license plate relighting comprises collecting an image of a license plate, performing license plate recognition on the image of the license plate; calculating a confidence metric for the license plate recognition; and performing a shadow detection and relighting method if the confidence metric is below a predetermined threshold, comprising identifying a shaded region of said license plate, determining if the shaded region is actually shaded, and relighting the actually shaded region.
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公开(公告)号：US20170256165A1
公开(公告)日：2017-09-07
申请号：US15060830
申请日：2016-03-04
Applicant: Xerox Corporation
Inventor： Graham Pennington , Hao Wu , Howard Mizes , Wencheng Wu , Rakesh Kulkarni
CPC classification number: G08G1/147 , G06K9/00771 , G06K9/00812 , G06K9/3208 , G06K9/4604 , G08G1/142 , G08G1/144 , G08G1/146
Abstract: A method, system, and apparatus for parking occupancy detection comprises collecting video of a blockface with at least one video recording module, identifying a number of possible parking spaces along the blockface in the collected video, defining, a region of interest for each of the possible parking spaces, detecting a time dependent occupancy of the defined regions of interest for each of the possible parking spaces, and reporting the time dependent occupancy. Drift correction of the recorded video and ground truth comparisons of occupancy determinations may be provided.
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公开(公告)号：US09756248B1
公开(公告)日：2017-09-05
申请号：US15058660
申请日：2016-03-02
Applicant: Xerox Corporation
Inventor： Hao Wu , Howard Mizes , Wencheng Wu , Graham Pennington , Rakesh Kulkarni
CPC classification number: H04N5/23254 , G06K9/00765 , G06K9/00785 , G06K9/209 , G06T5/003 , G06T5/50 , G06T7/174 , G06T7/215 , G06T7/33 , G06T2207/10016 , G06T2207/10024 , H04N5/23267
Abstract: A method, system, and apparatus for video frame alignment comprises collecting video data comprising at least two video frames; extracting a line profile along at least one line profile in each of the at least two video frames; selecting one of the at least two video frames as a reference video frame; segmenting each of the at least one line profiles into a plurality of segmented line profile group segments; aligning the plurality of segmented line profiles with the segmented line profiles in the reference video frame; translating each of the at least two video frames for each of the plurality of corresponding segmented line profile alignments; and removing a camera shift from the at least two video frames according to the translation and alignment of the plurality of segmented line profiles with the plurality of segmented line profile in the reference video frame.
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