Spectacle wearing parameter measurement device, spectale wearing parameter measurement program, and position specifying method

A spectacle wearing parameter measurement program that causes a computer provided with a display screen unit and an operation unit and used in measurement of a spectacle wearing parameter of a subject who is to wear a spectacle frame to function as:

• an image processing section that prepares a third image obtained by associating a first image as a face image of the subject in a spectacle-frame wearing state and a second image as a face image in a spectacle-frame non-wearing state;
• a display control section that displays the third image by the display screen unit, the third image prepared by the image processing section;
• an operation control section that causes the operation unit to specify a measurement reference point of the spectacle wearing parameter on the third image displayed on the display screen unit;
• and
• a measurement computation section that calculates the spectacle wearing parameter by using data of the specified measurement reference point.

A position specifying method for specifying, when a spectacle wearing parameter about a subject is to be measured by using a face image of the subject in a wearing state of a spectacle frame, a measurement reference point on the face image required for the measurement, the position specifying method comprising:

• acquiring each of a first image as the face image of the subject in a spectacle-frame wearing state and a second image as the face image in a spectacle-frame non-wearing state;
• when the measurement reference point is to be specified, preparing and displaying a third image obtained by associating the first image in the spectacle-frame wearing state and the second image in the spectacle-frame non-wearing state;
• and
• specifying the measurement reference point of the spectacle wearing parameter on the third image.