Transparency evaluation device, transparency evaluation method and transparency evaluation program

A transparency evaluation method comprising:

• inputting a captured image obtained by photographing a skin of a subject;
• calculating at least one of a representative value of a luminance component in the captured image, a representative value of a color component in the captured image, and an amount of generation of negative factors in which a value of the luminance component or a value of the color component in the captured image changes locally, as a first skin evaluation index, obtaining at least one of an intensity distribution of the luminance component and an intensity distribution of the color component in the captured image, and calculating at least one of smoothness of a change in the luminance component and smoothness of a change in the color component as a second skin evaluation index based on the obtained intensity distributions;
• combining a plurality of evaluation indexes including the first skin evaluation index and the second skin evaluation index that have been calculated with one another to calculate an overall index for transparency of the skin;
• and
• evaluating transparency of the skin of the subject based on the calculated overall index.

A non-transitory computer-readable medium storing a transparency evaluation program for causing a computer to execute the steps of:

• acquiring a captured image obtained by photographing a skin of a subject;
• calculating at least one of a representative value of a luminance component in the captured image, a representative value of a color component in the captured image, and an amount of generation of negative factors in which a value of the luminance component or a value of the color component in the captured image changes locally, as a first skin evaluation index, obtaining at least one of an intensity distribution of the luminance component and an intensity distribution of the color component in the captured image, and calculating at least one of smoothness of a change in the luminance component and smoothness of a change in the color component as a second skin evaluation index based on the obtained intensity distributions;
• combining a plurality of evaluation indexes including the first skin evaluation index and the second skin evaluation index that have been calculated with one another to calculate an overall index for transparency of the skin;
• and
• evaluating transparency of the skin of the subject based on the calculated overall index.

A transparency evaluation device comprising:

• an image input unit that inputs a captured image obtained by photographing a face of a subject subjected to makeup;
• a skin index calculation unit that calculates at least one of a representative value of a luminance component in the captured image, a representative value of a color component in the captured image, and an amount of generation of negative factors in which a value of the luminance component or a value of the color component in the captured image changes locally, as a first skin evaluation index;
• a makeup index calculation unit that calculates an amount of a red component due to complexion in the captured image as a first makeup evaluation index;
• an overall index calculation unit that combines a plurality of evaluation indexes including the first skin evaluation index and the first makeup evaluation index respectively calculated by the skin index calculation unit and the makeup index calculation unit with one another to calculate an overall index for transparency;
• and
• a transparency evaluation unit that evaluates transparency of the face of the subject subjected to makeup based on the overall index calculated by the overall index calculation unit.

A transparency evaluation method comprising:

• inputting a captured image obtained by photographing a face of a subject subjected to makeup;
• calculating at least one of a representative value of a luminance component in the captured image, a representative value of a color component in the captured image, and an amount of generation of negative factors in which a value of the luminance component or a value of the color component in the captured image changes locally, as a first skin evaluation index;
• calculating an amount of a red component due to complexion in the captured image as a first makeup evaluation index;
• combining a plurality of evaluation indexes including the first skin evaluation index and the first makeup evaluation index that have been calculated with one another to calculate an overall index for transparency;
• and
• evaluating transparency of the face of the subject subjected to makeup based on the calculated overall index.

A non-transitory computer-readable medium storing a transparency evaluation program for causing a computer to execute the steps of:

• acquiring a captured image obtained by photographing a face of a subject subjected to makeup;
• calculating at least one of a representative value of a luminance component in the captured image, a representative value of a color component in the captured image, and an amount of generation of negative factors in which a value of the luminance component or a value of the color component in the captured image changes locally, as a first skin evaluation index;
• calculating an amount of a red component due to complexion in the captured image as a first makeup evaluation index;
• combining a plurality of evaluation indexes including the first skin evaluation index and the first makeup evaluation index that have been calculated with one another to calculate an overall index for transparency;
• and
• evaluating transparency of the face of the subject subjected to makeup based on the calculated overall index.