Patent ID: 11928829
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. A recording medium recorded with an information processing program executable by a processor to perform processing, the processing comprising:
acquiring an image captured by a transmission electron microscope;
for each partial region in the image, executing a two-dimensional Fourier transform on an image of the partial region;
based on results obtained by executing the two-dimensional Fourier transform on each of the partial regions, performing clustering of frequency strengths obtained from the results of the two-dimensional Fourier transform; and
determining regions of different crystallinity in the image, based on results of the clustering, wherein:
in a case of executing the two-dimensional Fourier transform, the processor is configured to execute the two-dimensional Fourier transform on each of the partial regions, each of the partial regions representing an image within a predetermined range centered on a center pixel; and
in a case of determining the regions of different crystallinity in the image, the processor is further configured to determine whether or not each of the partial regions is a region of high crystallinity by determining whether or not the center pixel of each of the partial regions is a high crystallinity pixel from results of the clustering based on results of the two-dimensional Fourier transform calculated for each of the partial regions.