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

摘要

The method for automatically selecting a typhoon center using a vector calculated from radar image data using an optical flow method includes: calculating an effective vector field from radar image data using an optical flow method; Generating a densely spaced vector field by interpolating a vector blank region of the effective vector field using a linear interpolation method; Extracting a rotational component anomaly vector field consisting of the rotational component anomaly vectors of the typhoon by removing the relative vector from the interpolated effective vector field; Generating a normal vector intersection point of the vector of the extracted rotational component anomaly vector field; And calculating a normal vector maximum density intersection point based on the Gaussian kernel density estimation technique, and finally selecting a typhoon center. Accordingly, it is possible to quickly and objectively grasp the path of the typhoon movement.