- Patent Title: Method for typhoon center automatic selection using vectors calculated from radar image data by optical flow technique, recording medium and device for performing the method
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Application No.: US17355921Application Date: 2021-06-23
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Publication No.: US11333795B2Publication Date: 2022-05-17
- Inventor: Sun Jin Mo , Ji-Young Gu
- Applicant: KOREA METEOROLOGICAL ADMINISTRATION
- Applicant Address: KR Seoul
- Assignee: KOREA METEOROLOGICAL ADMINISTRATION
- Current Assignee: KOREA METEOROLOGICAL ADMINISTRATION
- Current Assignee Address: KR Seoul
- Agency: Novick, Kim & Lee, PLLC
- Agent Sang Ho Lee; Hyun Woo Shin
- Priority: KR10-2020-0115182 20200909
- Main IPC: G06T7/215
- IPC: G06T7/215 ; G01W1/10 ; G06K9/62

Abstract:
A method for automatic selection of typhoon center using vectors calculated from radar image data by an optical flow technique includes calculating a valid vector field from the radar image data using the optical flow technique, generating a dense vector field by interpolating an empty spot of the valid vector field using linear interpolation, extracting a rotating component anomaly vector field including typhoon rotating component anomaly vectors by removing a relative vector in the interpolated valid vector field, generating a normal vector intersection point of the vectors of the extracted rotating component anomaly vector field, and finally selecting the typhoon center by calculating a maximum density normal vector intersection point based on a Gaussian kernel density estimation technique. Accordingly, it is possible to detect the moving path of the typhoon rapidly and objectively.
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