Finger model verification method and information processing apparatus

A finger model verification method, comprising:

• searching for a plurality of parts that intersects with an approach direction of an arm of a human body in a simulation space;
• setting one of the plurality of parts that is nearest to the arm of the human body as a target part taken by two fingers of the arm of the human body in the simulation space;
• generating, in the simulation space, by a computer, a rectangular parallelepiped surrounding the target part, the rectangular parallelepiped having a plurality of surfaces in contact with a maximum outer shape of the target part, respectively;
• identifying, among the plurality of surfaces of the generated rectangular parallelepiped, a plurality of surfaces other than a surface in contact with one of the plurality of parts that is different from the target part, the first part being among the plurality of parts;
• selecting, among the identified plurality of surfaces other than the surface in contact with the one of the plurality of parts, a plurality of combinations of two surfaces that face each other in the rectangular parallelepiped, a distance between the two surfaces that face each other being shorter than a predetermined threshold value;
• identifying, among the identified plurality of surfaces other than the surface in contact with the one of the plurality of parts, a plurality of surfaces that is visible when viewed from the approach direction of the arm of the human body in the simulation space;
• changing position of the arm such that a first finger of the two fingers of the arm is placed at a center of one of the plurality of surfaces that is visible when viewed from the approach direction of the arm of the human body in the simulation space;
• and
• calculating a first vector from a point of the first finger of the two fingers of the arm to a point of a second finger of the two fingers of the arm that penetrates the rectangular parallelepiped when two surfaces among the identified plurality of surfaces other than the surface in contact with the one of the plurality of parts are taken by the two fingers of the arm of the human body in the simulation space;
• calculating a rotation amount to rotate the first vector to a second vector between the two surfaces of each of the plurality of combinations of two surfaces that face each other;
• and
• selecting, among the plurality of combinations of two surfaces that face each other, a combination having a smallest rotation amount in order to reduce the rotation amount between the first vector and the second vector.

An information processing apparatus, comprising:

• a memory;
• a processor coupled to the memory and the processor configured to configured to:
• search for a plurality of parts that intersects with an approach direction of an arm of a human body in a simulation space,
• set one of the plurality of parts that is nearest to the arm of the human body as a target part taken by two fingers of the arm of the human body in the simulation space,
• generate, in the simulation space, a rectangular parallelepiped surrounding a the target part, the rectangular parallelepiped having a plurality of surfaces in contact with a maximum outer shape of the target part, respectively,
• identify, among the plurality of surfaces of the generated rectangular parallelepiped, a plurality of surfaces other than a surface in contact with one of the plurality of parts that is different from the target part, the part being among the plurality of parts,
• select, among the identified plurality of surfaces other than the surface in contact with the one of the plurality of parts, a plurality of combinations of two surfaces that face each other in the rectangular parallelepiped, a distance between the two surfaces that face each other being shorter than a predetermined threshold value,
• identify, among the identified plurality of surfaces other than the surface in contact with the one of the plurality of parts, a plurality of surfaces that is visible when viewed from the approach direction of the arm of the human body in the simulation space,
• change position of the arm such that a first finger of the two fingers of the arm is placed at a center of one of the plurality of surfaces that is visible when viewed from the approach direction of the arm of the human body in the simulation space,
• calculate a vector from a point of the first finger of the two fingers of the arm to a point of a second finger of the two fingers of the arm that penetrates the rectangular parallelepiped when two surfaces among the identified plurality of surfaces other than the surface in contact with the one of the plurality of parts are taken by the two fingers of the arm of the human body in the simulation space,
• calculate a rotation amount to rotate the first vector to a second vector formed between the two surfaces of each of the plurality of combinations of two surfaces that face each other, and
• select, among the plurality of combinations of two surfaces that face each other, a combination having a smallest rotation amount in order to reduce the rotation amount between the first vector and the second vector.