Smartphone-Based Wearable Sizing via 3D Mapping

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Solution Overview

Problem

Conventional methods for sizing wearable items are inconsistent and cumbersome, leading to frustration for shoppers as different manufacturers use unique size definitions, and traditional fitting techniques require trying on items, which is inconvenient and time-consuming.

Innovation Solution

A portable computing device, such as a smartphone, equipped with a sensor assembly and sizing application that scans both body parts and wearable items to generate mappings for comparison, providing an accurate fit result without the need for physical try-ons, using conformal models to account for deformation and elasticity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional torso devices with micro switches and contact sensors are used for fitting determination, then fitting accuracy is improved, but device complexity and portability deteriorate

Engineering Contradiction:
Improvefitting accuracyVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical torso device with micro switches and contact sensors with an optical imaging system using a camera and image processing algorithms. The 3D mapping and virtual try-on functionality is achieved through photogrammetry and computer vision techniques, eliminating the need for complex mechanical sensors while maintaining fitting accuracy.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates a virtual copy of the clothing item and a digital model of the user's body, allowing virtual try-on without physical interaction. This copying approach enables accurate fitting determination through digital comparison rather than physical measurement, reducing device complexity.

Inventive Principle:
Principle #26Copying

2Ease of operation

If virtual on-line sizing with a virtual mannequin is used, then device portability is improved, but fitting accuracy deteriorates

Engineering Contradiction:
Improvedevice portabilityVSAvoidfitting accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent performs preliminary scanning of the user's body to create an accurate 3D model before the actual shopping or try-on process. This pre-acquired body data is stored and used for multiple virtual try-on sessions, eliminating the need for repeated physical measurements while maintaining high accuracy across different clothing items.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses optical imaging and image processing to create accurate 3D body models, replacing the need for physical measuring tapes and manual measurement processes. This substitution enables portable, accurate sizing through smartphone cameras and computational photography.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If physical try-on of clothing items is required to check fit and comfort, then fitting accuracy is improved, but time consumption and convenience deteriorate

Engineering Contradiction:
Improvefitting accuracyVSAvoidshopping time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent introduces a virtual reality intermediary layer between the user and physical clothing items. The virtual try-on system acts as a mediator that provides accurate fit prediction without requiring physical contact or trial, saving time while maintaining the ability to assess fit accuracy through realistic virtual visualization.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent performs fit assessment virtually before physical try-on, allowing users to pre-screen multiple clothing items digitally. This preliminary virtual evaluation eliminates the need to physically try on every item, significantly reducing shopping time while maintaining the option for physical verification of selected items.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10169795B2Sizing wearable items by device scanning
Publication Date: 2019.01.01 GOOGLE TECHNOLOGY HOLDINGS LLC
  • US10169795B2 patent drawing
  • US10169795B2 patent drawing
  • US10169795B2 patent drawing

AI summary

Disclosed are techniques for sizing wearable items by device scanning. A shopper scans a wearable item with a sensor assembly of a mobile computing device, such as a mobile phone. A wearable-item mapping is generated based on the scan of the wearable item. Similarly, a body part of the shopper is scanned with the sensor assembly to generate a body-part mapping based on the scan of the body part. The wearable-item mapping is then be compared to the body-part mapping, and a fit result determined based on the comparison. The fit result indicates for the shopper whether or not the wearable item is compatible with an associated body part and likely to fit the person. The fit result is presented at the mobile computing device, such as via an audio feedback or a visual feedback.