Image quality evaluation device, terminal device, image quality evaluation system, image quality evaluation method and computer-readable recording medium for storing programs

An image quality evaluation method for evaluating the quality of an image obtained by shooting a photographic subject including a periodic pattern that fluctuates periodically in one direction, wherein the image quality evaluation method includes:

• a Fourier transform process that accomplishes a two-dimensional Fourier transform on the image to obtain two-dimensional spatial frequency spectrum components;
• and
• an analysis process that, among the two-dimensional spatial frequency spectrum components obtained in the Fourier transform process, analyzes the resolution of the image on the basis of the spectrum components of spatial frequencies included in the periodic pattern, and analyzes the deterioration of the image on the basis of spectrum components other than these.

A computer-readable recording medium for storing a program for evaluating the quality of an image obtained by shooting a photographic subject including a periodic pattern that fluctuates periodically in one direction, this program causing a computer to function as:

• a Fourier transform means that accomplishes a two-dimensional Fourier transform on the image to obtain two-dimensional spatial frequency spectrum components;
• and
• an analysis means that, among the two-dimensional spatial frequency spectrum components obtained by the Fourier transform means, analyzes the resolution of the image on the basis of spectrum components of spatial frequencies included in the periodic pattern, and analyzes the deterioration of the image on the basis of spectrum components other than these.