3D Foot Scanner Using Segmented Cameras and LED Arrays
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Solution Overview
Problem
Current systems for measuring human foot properties, such as shoe size and insole type, lack the capability to perform detailed 3D analysis and visualize pronation and arch alignment before and after orthotic use, limiting their effectiveness in providing comprehensive foot analysis and corrective measure recommendations.
Innovation Solution
The Albert scanner system, an enhancement of the Aetrex Nova scanner, uses 16 cameras and 16 white light LEDs to capture 3D images of the foot, perform pronation tests, and provide a 360-degree view, along with a shoe-simulator for visualizing orthotic corrections, employing algorithms for background removal and texture analysis to enhance image processing and provide detailed foot metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional pressure plate and IR LED arrays are used for foot measurement, then basic shoe size and insole type can be determined, but detailed 3D analysis and pronation visualization capabilities are lacking
Solution Approach 1:
The system transitions from 2D pressure plate measurements to 3D foot scanning by adding multiple cameras positioned around the foot. This dimensional enhancement enables comprehensive 3D analysis, pronation visualization, and arch assessment while maintaining the original pressure measurement capabilities.
Solution Approach 2:
The measurement system is divided into multiple independent camera units positioned at different locations (front, back, sides, top, bottom) to capture different aspects of the foot. Each camera segment contributes specific view data that, when combined, provides complete 3D information and pronation analysis.
2Adaptability or versatility
If multiple cameras are added to capture 3D foot views and pronation, then comprehensive foot analysis is enabled, but device complexity increases
Solution Approach 1:
The camera system is designed to perform multiple functions simultaneously: capturing 3D foot geometry, analyzing pronation, assessing arch shape, and providing before/after orthotic comparisons. This multi-functionality reduces the need for separate specialized devices while managing complexity through integrated software processing.
Solution Approach 2:
The system creates digital 3D copies and models of the foot from multiple camera images. These digital replicas enable comprehensive analysis without requiring physical manipulation of the foot, simplifying the measurement process while maintaining high adaptability for various analysis types.
3Measurement precision
If 16 cameras and LED arrays are used for 3D imaging, then accurate foot visualization is achieved, but illumination uniformity and shadow removal become challenging
Solution Approach 1:
The illumination system is segmented into multiple LED units positioned strategically around the foot scanning area. Each LED group illuminates specific zones, and the combined effect provides uniform overall illumination. This segmentation allows precise control of light distribution to eliminate shadows while maintaining measurement accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate 3D measurement and visualization of foot alignment, allowing for precise recommendations on orthotics and shoe size, improving foot alignment and arch shape assessment, and providing users with a clear understanding of corrective measures' impact.
Implementation Method 1
16 cameras on the perimeter of the scanner to capture the view of the foot
Implementation Method 2
16 white light LEDs, one per camera, situated next to and aimed at the same aiming point as the aiming point of the cameras, to illuminate the scene and remove shadow
Data Source
AI summary
The present invention is a system and method for identifying certain physical properties of human feet. The system uses electronic and optical elements to perform before and after pronation test and before and after arch tests (meaning before and after use of an orthotic), and develop a 360 degree, three-dimensional view of the foot. It includes an insertable shoe-simulator used to assist in providing before- and after analysis of pronation.