Electronic apparatus, blur image sorting method, and program

A blur image sorting method, comprising:

• extracting, from an image, a subject area having a predetermined feature in the image;
• calculating a first blur degree that indicates a blur degree of the extracted subject area;
• calculating, when the number of subject areas in the image from which the first blur degree is calculated is one, a second blur degree that indicates a blur degree of the entire image based on the first blur degree, and calculating, when the number of subject areas in the image from which the first blur degree is calculated is plural, the second blur degree based on a value obtained by performing weighted averaging on the plurality of first blur degrees in accordance with dimensions of the plurality of subject areas;
• and
• sorting an image having the calculated second blur degree that is equal to or larger than a predetermined threshold value, as a blur image, from a plurality of images.

A blur image sorting method, comprising:

• optimizing a subject area having a predetermined feature, that is extracted from an image so that the subject area will have a predetermined size;
• acquiring a first blur degree that is calculated from the optimized subject area and indicates a blur degree of the subject area;
• calculating, when the number of subject areas in the image from which the first blur degree is calculated is one, a second blur degree that indicates a blur degree of the entire image based on the first blur degree, and calculating, when the number of subject areas in the image from which the first blur degree is calculated is plural, the second blur degree based on a value obtained by performing weighted averaging on the plurality of first blur degrees in accordance with dimensions of the plurality of subject areas;
• and
• sorting an image having the calculated second blur degree that is equal to or larger than a predetermined threshold value, as a blur image, from a plurality of images.

A non-transitory computer readable media having computer readable instructions stored thereon that when executed by a processing circuit causes an electronic apparatus to perform a method comprising:

• extracting, from an image, a subject area having a predetermined feature in the image;
• calculating a first blur degree that indicates a blur degree of the extracted subject area;
• calculating, when the number of subject areas in the image from which the first blur degree is calculated is one, a second blur degree that indicates a blur degree of the entire image based on the first blur degree, and calculating, when the number of subject areas in the image from which the first blur degree is calculated is plural, the second blur degree based on a value obtained by performing weighted averaging on the plurality of first blur degrees in accordance with dimensions of the plurality of subject areas;
• and
• sorting an image having the calculated second blur degree that is equal to or larger than a predetermined threshold value, as a blur image, from a plurality of images.

A non-transitory computer readable media having computer readable instructions stored thereon that when executed by a processing circuit causes an electronic apparatus to perform a method comprising:

• optimizing a subject area having a predetermined feature, that is extracted from an image so that the subject area will have a predetermined size;
• acquiring a first blur degree that is calculated from the optimized subject area and indicates a blur degree of the subject area;
• calculating, when the number of subject areas in the image from which the first blur degree is calculated is one, a second blur degree that indicates a blur degree of the entire image based on the first blur degree, and calculating, when the number of subject areas in the image from which the first blur degree is calculated is plural, the second blur degree based on a value obtained by performing weighted averaging on the plurality of first blur degrees in accordance with dimensions of the plurality of subject areas;
• and
• sorting an image having the calculated second blur degree that is equal to or larger than a predetermined threshold value, as a blur image, from a plurality of images.

An electronic apparatus, comprising:

• an extraction section to extract, from an image, a subject area having a predetermined feature in the image;
• a processing circuit that implements a first calculation section to calculate a first blur degree that indicates a blur degree of the extracted subject area;
• a second calculation section to calculate, when the number of subject areas in the image from which the first blur degree is calculated is one, a second blur degree that indicates a blur degree of the entire image based on the first blur degree, and calculate, when the number of subject areas in the image from which the first blur degree is calculated is plural, the second blur degree based on a value obtained by performing weighted averaging on the plurality of first blur degrees in accordance with dimensions of the plurality of subject areas;
• and
• a sorting section to sort an image having the calculated second blur degree that is equal to or larger than a predetermined threshold value, as a blur image, from a plurality of images.