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1810 条记录 (耗时 0.041 秒)

    SYSTEMS AND METHODS FOR MOTION ARTIFACT SIMULATION
    1.
    发明公开
    SYSTEMS AND METHODS FOR MOTION ARTIFACT SIMULATION 审中-公开

    公开(公告)号：US20240362754A1

    公开(公告)日：2024-10-31

    申请号：US18764345

    申请日：2024-07-04

    申请人： SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

    发明人： Jiao TIAN

    IPC分类号： G06T5/60 ,  G06T5/50 ,  G06T7/30 ,  G06T7/60

    CPC分类号： G06T5/60 ,  G06T5/50 ,  G06T7/30 ,  G06T7/60 ,  G06T2207/10081 ,  G06T2207/10088 ,  G06T2207/20081 ,  G06T2207/30004

    摘要： Systems and methods for motion artifact simulation are provided. The systems may obtain a target image including a target object. The systems may determine a plurality of sub-periods of a time period corresponding to the target image. The systems may determine a plurality of motion vector fields of the target object in the plurality of sub-periods. Each motion vector field of the plurality of motion vector fields may correspond to one of the plurality of sub-periods. The systems may determine a plurality of reconstruction images of the target object corresponding to the plurality of sub-periods based on projection data of the target image. Each reconstruction image of the plurality of reconstruction images may correspond to one of the plurality of sub-periods. The systems may generate a motion artifact simulation image of the target object based on the plurality of motion vector fields and the plurality of reconstruction images.

    Technique for assigning a perfusion metric to DCE MR images
    6.
    发明授权
    Technique for assigning a perfusion metric to DCE MR images 有权

    公开(公告)号：US12106476B2

    公开(公告)日：2024-10-01

    申请号：US17662088

    申请日：2022-05-05

    申请人： SIEMENS HEALTHINEERS AG

    发明人： Ingmar Voigt ,  Marcel Dominik Nickel ,  Tommaso Mansi ,  Sebastien Piat

    IPC分类号： G06T7/00 ,  G06N3/04 ,  G06T5/92 ,  G06T7/30

    CPC分类号： G06T7/0012 ,  G06N3/04 ,  G06T5/92 ,  G06T7/30 ,  G06T2207/10088 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30096

    摘要： DCE MR images are obtained from a MR scanner and under a free-breathing protocol is provided. A neural network assigns a perfusion metric to DCE MR images. The neural network includes an input layer configured to receive at least one DCE MR image representative of a first contrast enhancement state and of a first respiratory motion state and at least one further DCE MR image representative of a second contrast enhancement state and of a second respiratory motion state. The neural network further includes an output layer configured to output at least one perfusion metric based on the at least one DCE MR image and the at least one further DCE MR image. The neural network with interconnections between the input layer and the output layer is trained by a plurality of datasets, each of the datasets having an instance of the at least one DCE MR image and of the at least one further DCE MR image for the input layer and the at least one perfusion metric for the output layer.

    IMAGE CROPPING METHOD AND APPARATUS, AND DEVICE AND STORAGE MEDIUM
    8.
    发明公开
    IMAGE CROPPING METHOD AND APPARATUS, AND DEVICE AND STORAGE MEDIUM 审中-公开

    公开(公告)号：US20240296598A1

    公开(公告)日：2024-09-05

    申请号：US18662656

    申请日：2024-05-13

    申请人： BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.

    发明人： Linxing LI

    IPC分类号： G06T11/00 ,  G06F3/04845 ,  G06T7/30

    CPC分类号： G06T11/00 ,  G06F3/04845 ,  G06T7/30 ,  G06T2200/24 ,  G06T2210/22

    摘要： The present disclosure describes techniques of cropping an image. The techniques comprise determining a position of a border of a control in a display area of a display screen, wherein the control is configured to crop the image; adjusting a size of a cropping area in response to determining that the border of the control reaches a first target position while dragging the control, wherein the cropping area is an area enclosed by the border of the control; displaying the cropping area at a second target position of the display area when the dragging ends; and adjusting a display position of the image to make a center of the image coincide with a center of the cropping area or make the center of the image approach the center of the cropping area along a specified path.

    DETERMINING THE RELATIVE LOCATIONS OF MULTIPLE MOTION-TRACKING DEVICES
    9.
    发明公开
    DETERMINING THE RELATIVE LOCATIONS OF MULTIPLE MOTION-TRACKING DEVICES 审中-公开

    公开(公告)号：US20240296588A1

    公开(公告)日：2024-09-05

    申请号：US18662932

    申请日：2024-05-13

    申请人： Ultrahaptics IP Two Limited

    发明人： David S. HOLZ

    IPC分类号： G06T7/80 ,  G06T7/30 ,  G06V10/147 ,  G06V40/20

    CPC分类号： G06T7/85 ,  G06T7/30 ,  G06V10/147 ,  G06V40/28 ,  G06T2207/10021 ,  G06T2207/30196

    摘要： The technology disclosed relates to coordinating motion-capture of a hand by a network of motion-capture sensors having overlapping fields of view. In particular, it relates to designating a first sensor among three or more motion-capture sensors as having a master frame of reference, observing motion of a hand as it passes through overlapping fields of view of the respective motion-capture sensors, synchronizing capture of images of the hand within the overlapping fields of view by pairs of the motion-capture devices, and using the pairs of the hand images captured by the synchronized motion-capture devices to automatically calibrate the motion-capture sensors to the master frame of reference frame.