Contour detection apparatus, drawing apparatus, contour detection method, and storage medium

A contour detection method that is performed by an apparatus including a finger holder which holds and fixes a finger including a treatment target nail, an imaging unit which images, from a predetermined position, the finger held and fixed by the finger holder, a physical treatment unit which performs a physical treatment on the treatment target nail of the finger held and fixed by the finger holder, and a processor, the method comprising:

• a detection information obtaining step of obtaining, by the processor, contour detection information generated by learning to detect a nail contour which is a detection target, wherein the learning is performed by setting an initial shape including a plurality of feature points based on a plurality of learning data each of which is image data on a finger including a learning target nail, and setting, as a reference point, a feature point among the feature points corresponding to a reference position;
• an imaging step of imaging, by the imaging unit, from the predetermined position, the finger including the treatment target nail held and fixed by the finger holder, to obtain image data on the finger as treatment target data;
• a contour detection step of arranging, by the processor, in the treatment target data, an initial position of the initial shape such that a point corresponding to the reference position in a finger contour of the finger including the treatment target nail is superposed on the reference point in the contour detection information, and fitting the initial shape to the treatment target nail from the initial position, thereby detecting a nail contour of the treatment target nail;
• and
• a physical treatment step of performing, by the physical treatment unit, a physical treatment on the treatment target nail of the finger held and fixed by the finger holder, based on the detected nail contour of the treatment target nail.

A non-transitory computer readable storage medium storing a program that is executable by a computer of a contour detection apparatus including (i) a finger holder which holds and fixes a finger including a treatment target nail, (ii) an imaging unit which images, from a predetermined position, the finger held and fixed by the finger holder, and (iii) a physical treatment unit which performs a physical treatment on the treatment target nail of the finger held and fixed by the finger holder, the program being executable by the computer to cause the computer to perform functions comprising:

• a detection information obtaining function which obtains contour detection information generated by learning to detect a nail contour which is a detection target, wherein the learning is performed by setting an initial shape including a plurality of feature points based on a plurality of learning data each of which is image data on a finger including a learning target nail, and setting, as a reference point, a feature point among the feature points corresponding to a reference position;
• an imaging function which controls the imaging unit to image, from the predetermined position, the finger including the treatment target nail held and fixed by the finger holder to obtain image data on the finger as treatment target data;
• a contour detection function which arranges, in the treatment target data, an initial position of the initial shape such that a point corresponding to the reference position in a finger contour of the finger including the treatment target nail is superposed on the reference point in the contour detection information, and fits the initial shape to the treatment target nail from the initial position, thereby detecting a nail contour of the treatment target nail;
• and
• a physical treatment function which controls the physical treatment unit to perform the physical treatment on the treatment target nail of the finger held and fixed by the finger holder, based on the detected nail contour of the treatment target nail.