Blood flow measurement device and blood flow measurement method

    公开(公告)号:US12193802B2

    公开(公告)日:2025-01-14

    申请号:US17430225

    申请日:2020-02-11

    Abstract: A blood flow measurement device according to various embodiments may be configured to irradiate light to a first position of a subject and a second position of the subject located in a first direction with respect to the first position, acquire intensities of the reflected light at the first position and the second position, determine a first value which is a difference between the intensities of the reflected light at the first position and the second position, irradiate light to a third position of the subject located in a second direction with respect to the second position, acquire an intensity of the reflected light at the third position, determine a second value which is a difference between the intensities of the reflected light at the second position and the third position, and determine a blood flow direction based on the first value and the second value.

    Apparatus and method for measuring a three-dimensional shape

    公开(公告)号:US12163776B2

    公开(公告)日:2024-12-10

    申请号:US17212219

    申请日:2021-03-25

    Abstract: Provided are an apparatus and a method for measuring a three dimensional shape with improved accuracy. The apparatus includes a stage, at least one lighting unit, a plurality of image pickup units and a control unit. The stage supports an object to be measured. The lighting unit includes a light source and a grid, and radiates grid-patterned light to the object to be measured. The image pickup units capture, in different directions, grid images reflected from the object to be measured. The control unit calculates a three dimensional shape of the object from the grid images captured by the image pickup units. The present invention has advantages in capturing grid images through a main image pickup portion and sub-image pickup portions, enabling the measurement of the three dimensional shape of the object in a rapid and accurate manner.

    Optical tracking system for tracking a patient and a surgical instrument with a reference marker and shape measurement device via coordinate transformation

    公开(公告)号:US12161457B2

    公开(公告)日:2024-12-10

    申请号:US17534696

    申请日:2021-11-24

    Inventor: Hyun Ki Lee

    Abstract: An optical tracking system may comprise a reference marker unit stationarily disposed relative to a patient, a shape measurement unit configured to measure the three-dimensional shape of a specified part of the patient corresponding to a three-dimensional image, a tracking sensor unit configured to sense the reference marker unit and the shape measurement unit, and a processing unit. The processing unit may acquire a coordinate transformation relationship between the reference marker unit and the tracking sensor unit and a coordinate transformation relationship between the shape measurement unit and the tracking sensor unit based on a sensing result of the tracking sensor unit, acquire a coordinate transformation relationship between the specified part of the patient and the shape measurement unit based on a measurement result of the shape measurement unit, and define a coordinate system of the patient relative to the reference marker unit from the acquired coordinate transformation relationships.

    Inspection apparatus and component mounting system having the same

    公开(公告)号:US12108536B2

    公开(公告)日:2024-10-01

    申请号:US16919726

    申请日:2020-07-02

    Inventor: Jeongyeob Kim

    Abstract: A component mounting system and a method for inspecting mounted components are provided. A component mounting system according to an embodiment, comprises a solder inspection apparatus comparing coordinate information of the solder, which is obtained through measurement of a substrate to which solder is applied, with reference coordinate information to generate coordinate correction data; and a first mounting inspection apparatus comparing a first measurement data obtained by measuring mounting state of a component when the component is mounted based on the coordination correction data through a component mounting apparatus, with the coordinate correction data to verify whether a component is mounted on a position corrected based on the coordinate correction data. In this manner, by adding the verification function for the performance function of the component mounting apparatus to the inspection apparatus, it is possible to monitor the operation state of the component mounting apparatus in each process step.

    Method and apparatus for determining mid-sagittal plane in magnetic resonance images

    公开(公告)号:US11798161B2

    公开(公告)日:2023-10-24

    申请号:US17104659

    申请日:2020-11-25

    CPC classification number: G06T7/0012 G06T7/11 G06T2207/10088 G06T2207/30016

    Abstract: A method, performed by a computer, for volumetrically determining a mid-sagittal plane (MSP) from a plurality of magnetic resonance (MR) images of a brain is disclosed. The plurality of MR images is received and converted into a 3D volume image defined in a 3D coordinate space. Semantic segmentation of an anterior commissure (AC) region, a posterior commissure (PC) region, and a third ventricle region in the 3D volume image is performed based on a pre-trained segmentation model to generate a 3D mask image labeled with the AC region, the PC region, and the third ventricle region. Based on the labeled 3D mask image, a 3D volumetric image of the segmented third ventricle region is constructed. The MSP is determined based on the 3D volumetric image of the third ventricle region.

    Apparatus and method for determining mounting information, and recording medium for storing instruction

    公开(公告)号:US11568120B2

    公开(公告)日:2023-01-31

    申请号:US17201667

    申请日:2021-03-15

    Abstract: The apparatus according to various embodiments includes one or more processors, and one or more memories operatively connected to the one or more processors. The one or more memories may store instructions that, when executed, cause the one or more processors to acquire a plurality of first position offsets of a plurality of first components respectively mounted on a plurality of first substrates with respect to a plurality of pads of the plurality of first substrates corresponding to the plurality of first components from the optical measurement device, set a range of a normal state for a component position offset based on the plurality of first position offsets, generate a control signal for adjusting at least one control parameter of the component mounting device associated with a component mounting position based on the range of the normal state, and transmit the control signal to the component mounting device.

    APPARATUS AND METHOD FOR DETERMINING THREE-DIMENSIONAL SHAPE OF OBJECT

    公开(公告)号:US20220397390A1

    公开(公告)日:2022-12-15

    申请号:US17623498

    申请日:2020-06-29

    Abstract: The present disclosure proposes a detachable second apparatus coupled to a first apparatus that determines a first three-dimensional shape of an object and configured to determine an angle of an upper surface of the object. The second apparatus includes a first light source configured to sequentially irradiate first pattern lights having one phase range, a beam splitter and lenses configured to change optical paths of the first pattern lights so that a beam of light corresponding to a respective phase of the phase range spreads, and arrives at each point of a partial region of the upper surface of the object, a communication interface, and a first processor configured to obtain first information on first reflected lights generated by reflecting the first pattern lights from the partial region and determine the angle of the upper surface with respect to the reference plane based on the first information.

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