Magnetic Domain Structure Analysis Device, Magnetic Domain Structure Analysis Method, Program, Method For Producing Grain Oriented Electromagnetic Steel Sheet, Grain Oriented Electromagnetic Steel Sheet, And Iron Core

Abstract: Provided is a magnetic domain structure analysis device comprising: a magnetic domain image acquisition unit that acquires a magnetic domain image by imaging a grain-oriented electromagnetic steel sheet; and a magnetic domain width measurement unit that measures the width of the magnetic domain on the basis of the magnetic domain image acquired by the magnetic domain image acquisition unit. The magnetic domain width measurement unit generates a plurality of filter kernels having different spatial sizes by multiplying the complex one-dimensional Gabor filter by A times in a spatial direction corresponding to a direction orthogonal to the rolling direction of the grain-oriented electromagnetic steel sheet and 1/A in the amplitude direction, applies the plurality of filter kernels to the magnetic domain images, respectively, calculates the absolute value of the filter output for each filter kernel, and derives the width of the magnetic domain on the basis of the spatial size of the filter kernel having the largest absolute value among the plurality of filter kernels.

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