The present disclosure relates to an apparatus, for generating information about the interior of a shoe, comprising: a sensor unit into which material can be injected and which can sense physical changes on the surface; a material injection unit for injecting the material into the sensor unit; and a processor unit for generating information on the interior of the shoe on the basis of the physical change of the surface sensed by the sensor unit.

A footwear system may include a first article of footwear including a first sole structure and a first upper secured to the first sole structure, the first upper defining a first opening configured to receive a foot of a wearer. The first upper may include a first indicia portion disposed adjacent to the first opening. In addition, the system may include a sock including a second indicia portion, wherein, when the sock is worn by the wearer on a foot received within the upper, one or more features of the second indicia portion are substantially aligned with one or more features of the first indicia portion on the upper to form a first indicia.

A footwear system may include a first article of footwear including a first sole structure and a first upper secured to the first sole structure, the first upper defining a first opening configured to receive a foot of a wearer. The first upper may include a first indicia portion disposed adjacent to the first opening. In addition, the system may include a sock including a second indicia portion, wherein, when the sock is worn by the wearer on a foot received within the upper, one or more features of the second indicia portion are substantially aligned with one or more features of the first indicia portion on the upper to form a first indicia.

In a markerless foot size estimation device 100, a shape data input unit 10 acquires three-dimensional shape data of a foot of a subject and stores the three-dimensional shape data in a shape data storage unit 20. A characteristic extraction unit 30 extracts foot shape characteristics from the three-dimensional shape data of a subject's foot stored in the shape data storage unit 20, and stores the foot shape characteristics in a shape characteristic storage unit 40. A machine learning unit 50 uses, as teacher data, foot shape characteristics and arch height stored in the shape characteristic storage unit 40 to create, through machine learning, an estimation model used to estimate arch height based on foot shape characteristics, and stores the estimation model in an estimation model storage unit 60. An estimation output unit 70 uses the estimation model stored in the estimation model storage unit 60 to estimate arch height based on extracted shape characteristics and outputs the arch height.

In one aspect, a system for obtaining dielectric properties of an object is disclosed, which comprises a plurality of transceivers for generating radiation in the microwave or millimeter-wave region of the electromagnetic spectrum. The transceivers are positioned in spatially fixed relationships relative to one another. The system further includes a controller for selectively activating the transceivers for irradiating at least a portion of the object and detecting at least a portion of the radiation reflected from said portion of the object in response to the irradiation, where each of the activated transceivers generates a signal in response to detection of the reflected radiation. The reflected signals are analyzed to determine a plurality of reflectivity coefficients corresponding to different discrete locations of the object, and the reflectivity coefficients are used to determine the complex permittivity of the discrete locations.

A shoe traction testing and measuring device, comprising a base frame, a rear leg assembly, a front leg assembly, a hip joint, and a piston. The piston is connected to the base frame and the rear leg assembly. A lower portion of the rear leg assembly is connected to the base frame and an upper portion of the rear leg assembly is connected to an upper portion of the front leg assembly at the hip joint. The front leg assembly comprises an articulating ankle and a replica foot, which is configured to don a shoe to be tested. When the piston actuates forward, the upper portion of the rear leg assembly tilts forward, which causes the front leg assembly to move forward and downward, simulating a step of a human, which causes the shoe on the replica foot to contact a force plate or a surface that is on top of the force plate.

A shoe fit measuring device, comprising: a replica human foot portion; pressure sensors; and distance gauges. The pressure sensors and distance gauges are configured to determine whether shoes being fit tested are the correct size. The replica human foot and the sensors may be configured to be inserted into the shoes being fit tested so that fit measurements may be taken.

A shoe fit measuring device, comprising: a replica human foot portion; pressure sensors; and distance gauges. The pressure sensors and distance gauges are configured to determine whether shoes being fit tested are the correct size. The replica human foot and the sensors may be configured to be inserted into the shoes being fit tested so that fit measurements may be taken.

Embodiments are directed towards recommending a shoe and insole combination for a consumer. A variety of shoe information, insole information, and consumer foot information may be determined, which may include heel width, a width or shape, a length, a height, and arch characteristics. The foot information, the shoe information for a plurality of shoes, and the insole information for a plurality of insoles may be compared to determine at least one combination of shoe and insole that is compatible with the consumer's foot. Based on this comparison of foot information, shoe information, and insole information, a recommendation of at least one shoe and insole combination may be determined and provided to a user and/or the consumer.

Embodiments are directed towards recommending a shoe and insole combination for a consumer. A variety of shoe information, insole information, and consumer foot information may be determined, which may include heel width, a width or shape, a length, a height, and arch characteristics. The foot information, the shoe information for a plurality of shoes, and the insole information for a plurality of insoles may be compared to determine at least one combination of shoe and insole that is compatible with the consumer's foot. Based on this comparison of foot information, shoe information, and insole information, a recommendation of at least one shoe and insole combination may be determined and provided to a user and/or the consumer.