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公开(公告)号:US20140270484A1
公开(公告)日:2014-09-18
申请号:US14184766
申请日:2014-02-20
Applicant: NEC Laboratories America, Inc.
Inventor: Manmohan Chandraker , Shiyu Song , Yuanqing Lin , Xiaoyu Wang
IPC: G06K9/00
CPC classification number: G06T7/2033 , G06K9/00805 , G06T7/246 , G06T7/277 , G06T7/579 , G06T7/73 , G06T2207/10016 , G06T2207/20076 , G06T2207/20081 , G06T2207/30252
Abstract: Systems and methods are disclosed for autonomous driving with only a single camera by moving object localization in 3D with a real-time framework that harnesses object detection and monocular structure from motion (SFM) through the ground plane estimation; tracking feature points on moving cars a real-time framework to and use the feature points for 3D orientation estimation; and correcting scale drift with ground plane estimation that combines cues from sparse features and dense stereo visual data.
Abstract translation: 公开的系统和方法仅用单个摄像机进行自主驾驶,通过利用来自运动(SFM)的对象检测和单目结构通过接地平面估计的实时框架来移动3D物体定位; 跟踪移动汽车上的特征点实时框架并使用特征点进行3D定位估计; 并且通过地面平面估计来校正尺度漂移,其结合来自稀疏特征和密集立体视觉数据的线索。
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公开(公告)号:US20240378454A1
公开(公告)日:2024-11-14
申请号:US18659738
申请日:2024-05-09
Applicant: NEC Laboratories America, Inc.
IPC: G06N3/096
Abstract: Systems and methods for optimizing models for open-vocabulary detection. Region proposals can be obtained by employing a pre-trained vision-language model and a pre-trained region proposal network. Object feature predictions can be obtained by employing a trained teacher neural network with the region proposals. Object feature predictions can be filtered above a threshold to obtain pseudo labels. A student neural network with a split-and-fusion detection head can be trained by utilizing the region proposals, base ground truth class labels and the pseudo labels. The pseudo labels can be optimized by reducing the noise from the pseudo labels by employing the trained split-and-fusion detection head of the trained student neural network to obtain optimized object detections. An action can be performed relative to a scene layout based on the optimized object detections.
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公开(公告)号:US20240354583A1
公开(公告)日:2024-10-24
申请号:US18615535
申请日:2024-03-25
Applicant: NEC Laboratories America, Inc.
Inventor: Sparsh Garg , Samuel Schulter , Bingbing Zhuang , Manmohan Chandraker
IPC: G06N3/0895
CPC classification number: G06N3/0895
Abstract: Methods and systems for training a model include annotating a subset of an unlabeled training dataset, that includes images of road scenes, with labels. A road defect detection model is iteratively trained, including adding pseudo-labels to a remainder of examples from the unlabeled training dataset and training the road defect detection model based on the labels and the pseudo-labels.
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公开(公告)号:US20240037188A1
公开(公告)日:2024-02-01
申请号:US18484839
申请日:2023-10-11
Applicant: NEC Laboratories America, Inc.
Inventor: Yi-Hsuan Tsai , Xiang Yu , Bingbing Zhuang , Manmohan Chandraker , Donghyun Kim
IPC: G06F18/213 , G06N3/08 , G06V10/75 , G06F18/22 , G06F18/214
CPC classification number: G06F18/213 , G06N3/08 , G06V10/751 , G06F18/22 , G06F18/2155
Abstract: Video methods and systems include extracting features of a first modality and a second modality from a labeled first training dataset in a first domain and an unlabeled second training dataset in a second domain. A video analysis model is trained using contrastive learning on the extracted features, including optimization of a loss function that includes a cross-domain regularization part and a cross-modality regularization part.
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公开(公告)号:US11710346B2
公开(公告)日:2023-07-25
申请号:US17330832
申请日:2021-05-26
Applicant: NEC Laboratories America, Inc.
Inventor: Manmohan Chandraker , Ting Wang , Xiang Xu , Francesco Pittaluga , Gaurav Sharma , Yi-Hsuan Tsai , Masoud Faraki , Yuheng Chen , Yue Tian , Ming-Fang Huang , Jian Fang
IPC: G06V40/16 , G06T3/00 , G06V10/774
CPC classification number: G06V40/172 , G06T3/0006 , G06V10/774 , G06V40/171
Abstract: Methods and systems for training a neural network include generate an image of a mask. A copy of an image is generated from an original set of training data. The copy is altered to add the image of a mask to a face detected within the copy. An augmented set of training data is generated that includes the original set of training data and the altered copy. A neural network model is trained to recognize masked faces using the augmented set of training data.
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公开(公告)号:US20230196122A1
公开(公告)日:2023-06-22
申请号:US17899913
申请日:2022-08-31
Applicant: NEC Laboratories America, Inc.
Inventor: Yumin Suh , Samuel Schulter , Xiang Yu , Masoud Faraki , Manmohan Chandraker , Dripta Raychaudhuri
IPC: G06N3/0985
CPC classification number: G06N3/0985
Abstract: Systems and methods for generating a hypernetwork configured to be trained for a plurality of tasks; receiving a task preference vector identifying a hierarchical priority for the plurality of tasks, and a resource constraint as a tuple; finding tree sub-structures and the corresponding modulation of features for every tuple within an N-stream anchor network; optimizing a branching regularized loss function to train an edge hypernet; and training a weight hypernet, keeping the anchor net and the edge hypernet fixed.
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公开(公告)号:US11604945B2
公开(公告)日:2023-03-14
申请号:US17128535
申请日:2020-12-21
Applicant: NEC Laboratories America, Inc.
Inventor: Yi-Hsuan Tsai , Kihyuk Sohn , Buyu Liu , Manmohan Chandraker , Jong-Chyi Su
IPC: G06K9/00 , G06K9/62 , B60W30/095 , B60W30/09 , B60W10/20 , B60W10/18 , B60W50/00 , G08G1/16 , G06N3/08 , G06V10/25 , G06V20/58 , G06V20/56
Abstract: Systems and methods for lane marking and road sign recognition are provided. The system aligns image level features between a source domain and a target domain based on an adversarial learning process while training a domain discriminator. The target domain includes one or more road scenes having lane markings and road signs. The system selects, using the domain discriminator, unlabeled samples from the target domain that are far away from existing annotated samples from the target domain. The system selects, based on a prediction score of each of the unlabeled samples, samples with lower prediction scores. The system annotates the samples with the lower prediction scores.
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公开(公告)号:US11604943B2
公开(公告)日:2023-03-14
申请号:US16400376
申请日:2019-05-01
Applicant: NEC Laboratories America, Inc.
Inventor: Yi-Hsuan Tsai , Samuel Schulter , Kihyuk Sohn , Manmohan Chandraker
Abstract: Systems and methods for domain adaptation for structured output via disentangled representations are provided. The system receives a ground truth of a source domain. The ground truth is used in a task loss function for a first convolutional neural network that predicts at least one output based on inputs from the source domain and a target domain. The system clusters the ground truth of the source domain into a predetermined number of clusters, and predicts, via a second convolutional neural network, a structure of label patches. The structure includes an assignment of each of the at least one output of the first convolutional neural network to the predetermined number of clusters. A cluster loss is computed for the predicted structure of label patches, and an adversarial loss function is applied to the predicted structure of label patches to align the source domain and the target domain on a structural level.
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公开(公告)号:US11594041B2
公开(公告)日:2023-02-28
申请号:US17128492
申请日:2020-12-21
Applicant: NEC Laboratories America, Inc.
Inventor: Yi-Hsuan Tsai , Kihyuk Sohn , Buyu Liu , Manmohan Chandraker , Jong-Chyi Su
IPC: G06K9/00 , G06V20/58 , G06K9/62 , B60W30/095 , B60W30/09 , B60W10/18 , B60W10/20 , G08G1/16 , B60W50/00 , G06N3/08 , G06N3/04
Abstract: Systems and methods for obstacle detection are provided. The system aligns image level features between a source domain and a target domain based on an adversarial learning process while training a domain discriminator. The target domain includes one or more road scenes having obstacles. The system selects, using the domain discriminator, unlabeled samples from the target domain that are far away from existing annotated samples from the target domain. The system selects, based on a prediction score of each of the unlabeled samples, samples with lower prediction scores. The system annotates the samples with the lower prediction scores.
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公开(公告)号:US20220108226A1
公开(公告)日:2022-04-07
申请号:US17491663
申请日:2021-10-01
Applicant: NEC Laboratories America, Inc.
Inventor: Xiang Yu , Yi-Hsuan Tsai , Francesco Pittaluga , Masoud Faraki , Manmohan Chandraker , Yuqing Zhu
Abstract: A method for employing a general label space voting-based differentially private federated learning (DPFL) framework is presented. The method includes labeling a first subset of unlabeled data from a first global server, to generate first pseudo-labeled data, by employing a first voting-based DPFL computation where each agent trains a local agent model by using private local data associated with the agent, labeling a second subset of unlabeled data from a second global server, to generate second pseudo-labeled data, by employing a second voting-based DPFL computation where each agent maintains a data-independent feature extractor, and training a global model by using the first and second pseudo-labeled data to provide provable differential privacy (DP) guarantees for both instance-level and agent-level privacy regimes.
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