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公开(公告)号:US10289823B2
公开(公告)日:2019-05-14
申请号:US15637368
申请日:2017-06-29
Applicant: NEC Laboratories America, Inc. , NEC Hong Kong Limited
Inventor: Manmohan Chandraker , Xiang Yu , Eric Lau , Elsa Wong
IPC: G06K9/00 , G06F21/32 , G06N20/00 , G06N99/00 , G07C9/00 , H04L29/06 , G06F21/62 , G06K9/46 , G06K9/66
Abstract: A traffic enforcement system and corresponding method are provided. The traffic enforcement system includes a camera configured to capture an input image of one or more subjects in a motor vehicle. The traffic enforcement system further includes a memory storing a deep learning model configured to perform multi-task learning for a pair of tasks including a liveness detection task and a face recognition task on one or more subjects in a motor vehicle depicted in the input image. The traffic enforcement system also includes a processor configured to apply the deep learning model to the input image to recognize an identity the one or more subjects in the motor vehicle and a liveness of the one or more subjects. The liveness detection task is configured to evaluate a plurality of different distractor modalities corresponding to different physical spoofing materials to prevent face spoofing for the face recognition task.
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公开(公告)号:US20190139257A1
公开(公告)日:2019-05-09
申请号:US16115620
申请日:2018-08-29
Applicant: NEC Laboratories America, Inc.
Inventor: Wongun Choi , Samuel Schulter , Tuan Hung Vu , Manmohan Chandraker
IPC: G06T7/73
CPC classification number: G06T7/73 , G06K9/00744 , G06K9/00979 , G06K9/6232 , G06K9/629 , G06T7/20 , G06T7/269 , G06T2207/10016 , G06T2207/20016 , G06T2207/20076 , G06T2207/20081 , G06T2207/20084
Abstract: A computer-implemented method, system, and computer program product are provided for object detection utilizing an online flow guided memory network. The method includes receiving, by a processor, a plurality of videos, each of the plurality of videos including a plurality of frames. The method also includes generating, by the processor with a feature extraction network, a frame feature map for a current frame of the plurality of frames. The method additionally includes determining, by the processor, a memory feature map from the frame feature map and a previous memory feature map from a previous frame by warping the previous memory feature map. The method further includes predicting, by the processor with a task network, an object from the memory feature map. The method also includes controlling an operation of a processor-based machine to react in accordance with the object.
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公开(公告)号:US20190138855A1
公开(公告)日:2019-05-09
申请号:US16112080
申请日:2018-08-24
Applicant: NEC Laboratories America, Inc.
Inventor: Kihyuk Sohn , Manmohan Chandraker , Xiang Yu
Abstract: A computer-implemented method, system, and computer program product are provided for activity recognition in a surveillance system. The method includes receiving a plurality of unlabeled videos from one or more cameras. The method also includes classifying an activity in each of the plurality of unlabeled videos. The method additionally includes controlling an operation of a processor-based machine to react in accordance with the activity.
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公开(公告)号:US20190095704A1
公开(公告)日:2019-03-28
申请号:US16145257
申请日:2018-09-28
Applicant: NEC Laboratories America, Inc.
Inventor: Xiang Yu , Xi Yin , Kihyuk Sohn , Manmohan Chandraker
Abstract: A computer-implemented method, system, and computer program product are provided for facial recognition. The method includes receiving, by a processor device, a plurality of images. The method also includes extracting, by the processor device with a feature extractor utilizing a convolutional neural network (CNN) with an enlarged intra-class variance of long-tail classes, feature vectors for each of the plurality of images. The method additionally includes generating, by the processor device with a feature generator, discriminative feature vectors for each of the feature vectors. The method further includes classifying, by the processor device utilizing a fully connected classifier, an identity from the discriminative feature vector. The method also includes control an operation of a processor-based machine to react in accordance with the identity.
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公开(公告)号:US20190094875A1
公开(公告)日:2019-03-28
申请号:US16146202
申请日:2018-09-28
Applicant: NEC Laboratories America, Inc.
Inventor: Samuel Schulter , Paul Vernaza , Manmohan Chandraker , Menghua Zhai
Abstract: Systems and methods for generating an occlusion-aware bird's eye view map of a road scene include identifying foreground objects and background objects in an input image to extract foreground features and background features corresponding to the foreground objects and the background objects, respectively. The foreground objects are masked from the input image with a mask. Occluded objects and depths of the occluded objects are inferred by predicting semantic features and depths in masked areas of the masked image according to contextual information related to the background features visible in the masked image. The foreground objects and the background objects are mapped to a three-dimensional space according to locations of each of the foreground objects, the background objects and occluded objects using the inferred depths. A bird's eye view is generated from the three-dimensional space and displayed with a display device.
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公开(公告)号:US20190066493A1
公开(公告)日:2019-02-28
申请号:US16051924
申请日:2018-08-01
Applicant: NEC Laboratories America, Inc.
Inventor: Kihyuk Sohn , Luan Tran , Xiang Yu , Manmohan Chandraker
Abstract: Systems and methods for performing domain adaptation include collecting a labeled source image having a view of an object. Viewpoints of the object in the source image are synthesized to generate view augmented source images. Photometrics of each of the viewpoints of the object are adjusted to generate lighting and view augmented source images. Features are extracted from each of the lighting and view augmented source images with a first feature extractor and from captured images captured by an image capture device with a second feature extractor. The extracted features are classified using domain adaptation with domain adversarial learning between extracted features of the captured images and extracted features of the lighting and view augmented source images. Labeled target images are displayed corresponding to each of the captured images including labels corresponding to classifications of the extracted features of the captured images.
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117.
公开(公告)号:US20190066373A1
公开(公告)日:2019-02-28
申请号:US16029126
申请日:2018-07-06
Applicant: NEC Laboratories America, Inc.
Inventor: Quoc-Huy Tran , Mohammed E.F. Salem , Muhammad Zeeshan Zia , Paul Vernaza , Manmohan Chandraker
CPC classification number: G06K9/00798 , G06K9/00785 , G06K9/00825 , G06K9/46 , G06K9/4628 , G06K9/6262 , G06K9/6274 , G06K9/6276 , G06K9/629 , G06K9/66 , G06N3/0454 , G06N3/08 , G06T17/05 , G06T2200/08 , G06T2207/20081
Abstract: Systems and methods for correspondence estimation and flexible ground modeling include communicating two-dimensional (2D) images of an environment to a correspondence estimation module, including a first image and a second image captured by an image capturing device. First features, including geometric features and semantic features, are hierarchically extract from the first image with a first convolutional neural network (CNN) according to activation map weights, and second features, including geometric features and semantic features, are hierarchically extracted from the second image with a second CNN according to the activation map weights. Correspondences between the first features and the second features are estimated, including hierarchical fusing of geometric correspondences and semantic correspondences. A 3-dimensional (3D) model of a terrain is estimated using the estimated correspondences belonging to the terrain surface. Relative locations of elements and objects in the environment are determined according to the 3D model of the terrain. A user is notified of the relative locations.
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公开(公告)号:US20190064851A1
公开(公告)日:2019-02-28
申请号:US16100479
申请日:2018-08-10
Applicant: NEC Laboratories America, Inc.
Inventor: Quoc-Huy Tran , Manmohan Chandraker , Hyo Jin Kim
Abstract: A computer-implemented method, system, and computer program product are provided for a stabilization system utilizing pose estimation in an aerial drone. The method includes receiving, by a pose estimation system, a plurality of images from one or more cameras. The method also includes predicting, by the pose estimation system, a pose from the score map and a combined feature map, the combined feature map correlated from a pair of the plurality of images. The method additionally includes moving, by a propulsion system, the aerial drone responsive to the pose.
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119.
公开(公告)号:US20180307947A1
公开(公告)日:2018-10-25
申请号:US15906710
申请日:2018-02-27
Applicant: NEC Laboratories America, Inc.
Inventor: Wongun Choi , Samuel Schulter , Kihyuk Sohn , Manmohan Chandraker
CPC classification number: G06K9/6259 , G06K9/03 , G06K9/6201 , G06K9/66 , G06N3/0454 , G06N3/0472 , G06N3/08 , G06T11/001 , G06T11/60
Abstract: A system is provided for unsupervised cross-domain image generation relative to a first and second image domain that each include real images. A first generator generates synthetic images similar to real images in the second domain while including a semantic content of real images in the first domain. A second generator generates synthetic images similar to real images in the first domain while including a semantic content of real images in the second domain. A first discriminator discriminates real images in the first domain against synthetic images generated by the second generator. A second discriminator discriminates real images in the second domain against synthetic images generated by the first generator. The discriminators and generators are deep neural networks and respectively form a generative network and a discriminative network in a cyclic GAN framework configured to increase an error rate of the discriminative network to improve synthetic image quality.
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120.
公开(公告)号:US20180268266A1
公开(公告)日:2018-09-20
申请号:US15889958
申请日:2018-02-06
Applicant: NEC Laboratories America, Inc.
Inventor: Kihyuk Sohn , Xiang Yu , Manmohan Chandraker
CPC classification number: G06K9/66 , G06K9/00268 , G06K9/00288 , G06K9/00718 , G06K9/00744 , G06K9/00771 , G06K9/4628 , G06K9/6201 , G06K9/6217 , G06K9/6262 , G06K9/6274 , G06K2009/00738 , G06N3/02 , G06N3/0454 , G06N3/08 , G06N3/088 , G06N20/00 , G06T7/70 , G06T9/002 , G06T2207/20081 , G08B13/196 , G08B13/19613
Abstract: A surveillance system is provided that includes a device configured to capture a video sequence, formed from a set of unlabeled testing video frames, of a target area. The surveillance system further includes a processor configured to pre-train a recognition engine formed from a reference set of CNNs on a still image domain that includes labeled training still image frames. The processor adapts the recognition engine to a video domain to form an adapted recognition engine, by applying a non-reference set of CNNs to domains including the still image and video domains and a degraded image domain. The degraded image domain includes labeled synthetically degraded versions of the frames included in the still image domain. The video domain includes random unlabeled training video frames. The processor recognizes, using the adapted engine, at least one object in the target area. A display device displays the recognized objects.
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