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公开(公告)号:US20250117959A1
公开(公告)日:2025-04-10
申请号:US18480665
申请日:2023-10-04
Inventor: Benjamin Planche , Ziyan Wu , Meng Zheng , Zhongpai Gao , Abhishek Sharma
IPC: G06T7/70
Abstract: Multiple predictions about the position of an object during a time period may each indicate the position of the object at a respective time during the time period. Respective validity indications corresponding to the multiple predictions may each indicate an accuracy of the corresponding prediction. Whether a change has occurred in a distribution of the predictions from a first subset of predictions to a second subset of predictions during the time period may be determined. If the change has occurred, a prediction from the first subset of predictions or the second subset of predictions may be selected, based on the validity of the predictions and/or the detection of a motion, as a best indication of the position of the object.
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公开(公告)号:US20250111517A1
公开(公告)日:2025-04-03
申请号:US18374473
申请日:2023-09-28
Inventor: Wenzhe Cui , Meng Zheng , Arun Innanje , Ziyan Wu , Terrence Chen
Abstract: An apparatus for annotating a medical image may be configured to obtain, automatically, an outline of a region of interest (ROI) in the medical image and determine, based on one or more inner control points and one or more outer control points. The one or more inner control points may be located within the ROI and the one or more outer control points may be located outside of the ROI. The outline may be subsequently adjusted based on a user input and the adjusted outline may be used to generate a segmentation of the ROI.
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公开(公告)号:US12136235B2
公开(公告)日:2024-11-05
申请号:US17559364
申请日:2021-12-22
Inventor: Meng Zheng , Srikrishna Karanam , Ziyan Wu
Abstract: Human model recovery may be realized utilizing pre-trained artificially neural networks. A first neural network may be trained to determine body keypoints of a person based on image(s) of a person. A second neural network may be trained to predict pose parameters associated with the person based on the body keypoints. A third neural network may be trained to predict shape parameters associated with the person based on depth image(s) of the person. A 3D human model may then be generated based on the pose and shape parameters respectively predicted by the second and third neural networks. The training of the second neural network may be conducted using synthetically generated body keypoints and the training of the third neural network may be conducted using normal maps. The pose and shape parameters predicted by the second and third neural networks may be further optimized through an iterative optimization process.
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公开(公告)号:US20240177420A1
公开(公告)日:2024-05-30
申请号:US17994675
申请日:2022-11-28
Inventor: Srikrishna Karanam , Runze Li , Meng Zheng , Ziyan Wu
CPC classification number: G06T17/20 , A61B34/10 , G06T7/75 , A61B2034/105 , G06T2207/30196
Abstract: A video sequence depicting a person in a medical environment may be obtained and used for determining one or more human models of the person. A first human model representing a first pose or a first body shape of the person may be determined based on a first subset of images from the video sequence, while a second human model representing a second pose or a second body shape of the person may be determined based on a second subset of images from the video sequence. The second 2D or 3D representation of the person may include an adjustment to the first 2D or 3D representation of the person based on the observation of the person provided by the second subset of images.
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公开(公告)号:US20240161440A1
公开(公告)日:2024-05-16
申请号:US17988328
申请日:2022-11-16
Inventor: Meng Zheng , Yuchun Liu , Fan Yang , Srikrishna Karanam , Ziyan Wu , Terrence Chen
CPC classification number: G06V10/24 , G06T7/80 , G06V10/751 , G06V10/82 , G06T2207/10024 , G06T2207/20081
Abstract: Images captured by different image capturing devices may have different fields of views and/or resolutions. One or more of these images may be aligned based on an image template, and additional details for the adapted images may be predicted using a machine-learned data recovery model and added to the adapted images such that the images may have the same field of view or the same resolution.
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公开(公告)号:US20240108415A1
公开(公告)日:2024-04-04
申请号:US17957382
申请日:2022-09-30
Inventor: Srikrishna Karanam , Meng Zheng , Ziyan Wu
CPC classification number: A61B34/20 , A61B34/30 , A61G13/02 , G06T7/73 , G06T17/20 , G16H20/40 , A61B2034/2065 , A61G2203/34 , G06T2207/10024 , G06T2207/10028 , G06T2207/10048 , G06T2207/20081 , G06T2207/30196
Abstract: Disclosed is a method and a system for automatic positioning of a medical equipment with respect to a patient. The method includes obtaining sensor data related to the patient, from a plurality of sensors fixed relative to the medical equipment. The method further includes processing the sensor data to determine at least one pose characteristic of the patient and at least one shape characteristic of the patient. The method further includes determining at least one adjustment parameter for the medical equipment based on the at least one pose characteristic of the patient and the at least one shape characteristic of the patient. The method further includes adjusting the medical equipment based on the at least one adjustment parameter.
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公开(公告)号:US20230169657A1
公开(公告)日:2023-06-01
申请号:US17538232
申请日:2021-11-30
Inventor: Ziyan Wu , Srikrishna Karanam , Meng Zheng , Abhishek Sharma
CPC classification number: G06T7/0014 , G06T7/74 , G06T7/50 , G16H50/50 , G16H30/40 , G06N3/08 , G06T2207/10028 , G06T2207/30004 , G06T2207/20084 , G06T2207/20081
Abstract: The shape and/or location of an organ may change in accordance with changes in the body shape and/or pose of a patient. Described herein are systems, methods, and instrumentalities for automatically determining, using an artificial neural network (ANN), the shape and/or location of the organ based on human models that reflect the body shape and/or pose the patient. The ANN may be trained to learn the spatial relationship between the organ and the body shape or pose of the patient. Then, at an inference time, the ANN may be used to determine the relationship based on a first patient model and a first representation (e.g., a point cloud) of the organ so that given a second patient model thereafter, the ANN may automatically determine the shape and/or location of the organ corresponding to the body shape or pose of the patient indicated by the second patient model.
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公开(公告)号:US20230132479A1
公开(公告)日:2023-05-04
申请号:US17513392
申请日:2021-10-28
Inventor: Srikrishna Karanam , Meng Zheng , Ziyan Wu
Abstract: A three-dimensional (3D) model of a person may be obtained using a pre-trained neural network based on one or more images of the person. Such a model may be subject to estimation bias and/or other types of defects or errors. Described herein are systems, methods, and instrumentalities for refining the 3D model and/or the neural network used to generate the 3D model. The proposed techniques may extract information such as key body locations and/or a body shape from the images and refine the 3D model and/or the neural network using the extracted information. In examples, the 3D model and/or the neural network may be refined by minimizing a difference between the key body locations and/or body shape extracted from the images and corresponding key body locations and/or body shape determined from the 3D model. The refinement may be performed in an iterative and alternating manner.
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公开(公告)号:US20250094484A1
公开(公告)日:2025-03-20
申请号:US18369766
申请日:2023-09-18
Inventor: Meng Zheng , Ziyan Wu , Benjamin Planche , Zhongpai Gao , Terrence Chen
Abstract: Described herein are machine learning (ML) based on systems, methods, and instrumentalities associated with image search and/or retrieval. An apparatus as described herein may obtain a query image and a textual description associated with the query image, and generate, using an artificial neural network (ANN), a feature representation that may represent the image and the textual description as an associated pair. Based on the feature representation, the apparatus may identify one or more images from an image repository and provide an indication regarding the one or more identified images, for example, as a ranked list.
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公开(公告)号:US12183019B2
公开(公告)日:2024-12-31
申请号:US17994696
申请日:2022-11-28
Inventor: Srikrishna Karanam , Meng Zheng , Ziyan Wu
Abstract: A human model such as a 3D human mesh may be generated for a person in a medical environment based on one or more images of the person. The images may be captured using a sensing device that may be attached to an existing medical device such as a medical scanner in the medical environment. Such an arrangement may ensure that unblocked views of the person (e.g., body keypoints of the person) may be obtained and used to generate the human model. The position of the medical device in the medical environment may be determined and used to facilitate the human model construction such that the pose and body shape of the person in the medical environment may be accurately represented by the human model.
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