A method for flattening a three-dimensional shoe upper template is provided. The method includes providing a three-dimensional last model, obtaining a three-dimensional grid model, obtaining a three-dimensional thickened grid model, obtaining a two-dimensional initial-value grid model, and obtaining a two-dimensional grid model with the smallest energy value. A system and a non-transitory computer-readable medium for performing the method are also provided. The method makes it possible to precisely flatten a three-dimensional last model with a non-developable surface and thereby convert the three-dimensional last model into a two-dimensional grid model.

An article of footwear flat pattern upper having an upper portion and a footbed portion is provided. The upper portion and the footbed portion are integrally continuous, such that the upper portion lateral side converges with the footbed lateral side. The flat pattern includes nested same-sided article of footwear with a reduced surplus portion there between. The articles of footwear includes the following continuous portions: the first medial side with a toe end, the toe end with a lateral side, the lateral side with a heel end, and the heel end with the second medial side. The first medial side and the second medial side are joined to form dimensional article of footwear.

An article of footwear flat pattern upper having an upper portion and a footbed portion is provided. The upper portion and the footbed portion are integrally continuous, such that the upper portion lateral side converges with the footbed lateral side. The flat pattern includes nested same-sided article of footwear with a reduced surplus portion there between. The articles of footwear includes the following continuous portions: the first medial side with a toe end, the toe end with a lateral side, the lateral side with a heel end, and the heel end with the second medial side. The first medial side and the second medial side are joined to form dimensional article of footwear.

A method for marking references on a flat article includes providing a model having at least a through-opening and exhibiting the same peripheral profile as a flat article to be marked; detecting the peripheral profile of the model and storing that profile in a memory; detecting a profile of the through-opening and the relative positioning with respect to a reference system; detecting a peripheral profile of the flat article; replicating the peripheral profile of the model so as to superpose it on the peripheral profile of the flat article; replicating also the profile of the through-opening of the detected model, taking account of the relative positioning with respect to the reference system and of the positioning of the peripheral profile of the model with respect to the peripheral profile of the flat article. Contactless marking of at least a reference on the flat article is made at the profile of the through-opening which has been replicated.

A method for marking references on a flat article includes providing a model having at least a through-opening and exhibiting the same peripheral profile as a flat article to be marked; detecting the peripheral profile of the model and storing that profile in a memory; detecting a profile of the through-opening and the relative positioning with respect to a reference system; detecting a peripheral profile of the flat article; replicating the peripheral profile of the model so as to superpose it on the peripheral profile of the flat article; replicating also the profile of the through-opening of the detected model, taking account of the relative positioning with respect to the reference system and of the positioning of the peripheral profile of the model with respect to the peripheral profile of the flat article. Contactless marking of at least a reference on the flat article is made at the profile of the through-opening which has been replicated.

A conditionally visible bite line may be demarcated on a shoe upper using at least one of a fluorescent or an Infrared (IR)-responsive material. Such a conditionally visible bite line may be observable only under particular conditions, such as when illuminated by an ultraviolet light source or an IR light source, as appropriate. A light may be projected to intersect the conditionally visible bite line under conditions rendering the conditionally visible bite line detectable. The intersection(s) of the projected light and the conditionally visible bite line may be used to create a virtual bite line for use in generating a tool path to process the surface of a shoe upper bounded by the conditionally visible bite line.

A conditionally visible bite line may be demarcated on a shoe upper using at least one of a fluorescent or an Infrared (IR)-responsive material. Such a conditionally visible bite line may be observable only under particular conditions, such as when illuminated by an ultraviolet light source or an IR light source, as appropriate. A light may be projected to intersect the conditionally visible bite line under conditions rendering the conditionally visible bite line detectable. The intersection(s) of the projected light and the conditionally visible bite line may be used to create a virtual bite line for use in generating a tool path to process the surface of a shoe upper bounded by the conditionally visible bite line.

A three-dimensional measurement (C) system for a marked line for adhering a sole (A) to an upper (B) and a three-dimensional measurement method therefor. A three-dimensional structure of a sole inner surface (A1) is measured automatically using a three-dimensional scanner (30), so as to form three-dimensional inner surface data (201) of the sole (A); and by conducting operation processing on the three-dimensional inner surface data (201) of the sole (A) and three-dimensional surface data (202) of the upper (B), a contour line (A2) of the sole inner surface (A1) is transferred to an upper lower surface (B1), so as to form a processing marked line of the upper (B), thereby improving the operation efficiency of adhering the sole (A) to the upper (B).

A three-dimensional measurement (C) system for a marked line for adhering a sole (A) to an upper (B) and a three-dimensional measurement method therefor. A three-dimensional structure of a sole inner surface (A1) is measured automatically using a three-dimensional scanner (30), so as to form three-dimensional inner surface data (201) of the sole (A); and by conducting operation processing on the three-dimensional inner surface data (201) of the sole (A) and three-dimensional surface data (202) of the upper (B), a contour line (A2) of the sole inner surface (A1) is transferred to an upper lower surface (B1), so as to form a processing marked line of the upper (B), thereby improving the operation efficiency of adhering the sole (A) to the upper (B).

An article of footwear flat pattern upper having an upper portion and a footbed portion is provided. The upper portion and the footbed portion are integrally continuous, such that the upper portion lateral side converges with the footbed lateral side. The flat pattern includes nested same-sided article of footwear with a reduced surplus portion there between. The articles of footwear includes the following continuous portions: the first medial side with a toe end, the toe end with a lateral side, the lateral side with a heel end, and the heel end with the second medial side. The first medial side and the second medial side are joined to form dimensional article of footwear.