Foot Dimension Measurement Using Reference Object Imaging
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Solution Overview
Problem
Current methods for determining clothing sizes, especially for mail-order purchases, are prone to errors due to variations in sizing between manufacturers and require manual measurements that are cumbersome and imprecise.
Innovation Solution
A method using a smartphone to photograph a user's foot alongside a reference object, allowing for precise calculation of foot dimensions through image processing algorithms, which can then suggest suitable clothing sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods are used to determine foot dimensions, then measurement precision may be improved, but the ease of operation deteriorates due to time-consuming procedures
Solution Approach 1:
The patent replaces manual mechanical measurement processes with an automated optical system. A camera captures an image of the foot and a reference object, and image processing algorithms automatically calculate foot dimensions. This substitution eliminates the need for manual measurement tools and procedures, providing both high precision through digital analysis and ease of operation through automation.
Solution Approach 2:
The patent creates a digital copy (photograph) of the foot instead of physically measuring it. The image serves as a reproducible record that can be analyzed multiple times without additional measurement effort. This copying approach allows precise dimension determination from the captured image while requiring minimal user action beyond taking the photograph.
2Ease of operation
If standardized clothing sizes are used for ordering garments, then the ease of operation is improved, but the reliability of fit deteriorates due to manufacturer variations
Solution Approach 1:
The patent implements a feedback mechanism where the measured foot dimensions are used to select the most appropriate clothing size. The system compares the precisely measured foot dimensions against size guidelines to recommend a specific size, creating a closed loop that ensures the selected garment will fit the user's actual measurements rather than relying on potentially inaccurate standardized sizing.
Solution Approach 2:
The patent changes the approach from using standardized size labels to using actual measured dimensional parameters. Instead of relying on manufacturer-specific size standards (which vary), the system uses direct measurements of the user's foot dimensions as the basis for size selection, making the ordering process both convenient and reliable.
3Productivity
If multiple feet are photographed simultaneously to improve productivity, then the measurement efficiency is improved, but the device complexity increases due to processing requirements
Solution Approach 1:
The patent segments the image processing task by first identifying and separating individual feet in the photograph. The system detects contours and distinguishes between multiple feet, then processes each foot independently to determine its dimensions. This segmentation approach allows efficient handling of multiple feet while keeping the processing logic relatively simple and modular.
Data Source
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AI summary
The method involves capturing pictures of foot (10) or contour (12) of foot on a display surface (14). A display surface with known dimensions is mapped from captured pictures. The dimensions of foot are calculated based on captured pictures and known dimensions of display surface. Independent claims are included for the following: (1) method for determining dimensions of garment of user; and (2) device for determining dimensions of garment of user.