3D Foot Scanner Using Segmented Camera Array for Pronation Analysis
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Solution Overview
Problem
Current foot measurement systems, such as the Aetrex Nova scanner, lack the capability to perform comprehensive 360-degree three-dimensional views and before-and-after pronation tests, which limits their ability to provide detailed insights into foot alignment and arch shape changes with orthotic use.
Innovation Solution
The Albert scanner enhances existing systems by incorporating multiple cameras and LEDs to capture 3D images, perform pronation and arch shape tests, and utilize advanced algorithms for background removal and image processing, enabling a 360-degree view and before-and-after analysis of foot alignment and arch shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cameras and LEDs are added to capture 3D images and perform comprehensive foot analysis, then measurement precision and diagnostic capability are improved, but device complexity increases
Solution Approach 1:
The system divides the foot scanning function into multiple specialized camera positions (16 perimeter cameras for 3D shape, 2 front/back cameras for pronation) and lighting zones (16 white LEDs for shadow removal, colored LEDs for ambient lighting). Each segment captures specific foot characteristics, and the combined data achieves comprehensive 3D measurement precision without requiring a single overly complex imaging mechanism.
Solution Approach 2:
The scanner integrates multiple functions into a single device: 3D foot shape capture, pronation/supination detection, arch depth measurement, and before-after orthotic comparison. The perimeter camera array and multi-color LED system serve multiple purposes simultaneously, reducing the need for separate specialized devices while maintaining measurement precision across all foot parameters.
2Measurement precision
If advanced image processing algorithms are used for background removal and 3D reconstruction, then measurement accuracy is improved, but processing time and computational resources increase
Solution Approach 1:
The system performs background removal and image preprocessing automatically during the scanning process itself. The white LEDs illuminate the foot while the cameras capture images, and software algorithms immediately process the raw images to remove background elements and enhance foot features before 3D reconstruction begins. This preliminary processing eliminates the need for separate manual setup or post-processing steps.
Solution Approach 2:
The patent replaces manual measurement and visual inspection methods with automated optical imaging and computer vision algorithms. The system uses software-based background removal, edge detection, and 3D reconstruction algorithms that process multiple camera images simultaneously to generate accurate foot measurements without requiring mechanical measurement tools or manual intervention, significantly reducing processing time while maintaining high 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
The Albert scanner provides users with detailed, accurate measurements and visual presentations of their feet, allowing for better orthotic recommendations and education on foot alignment improvements, enhancing the precision and user experience in determining shoe size and insole type.
Implementation Method 1
Sixteen (16) Cameras on the perimeter of the scanner, to capture images allowing a 3D measurement of feet
Implementation Method 2
A minimum of sixteen (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
Implementation Method 3
Eighteen (18) Lenses with IR-CUT filter (one per camera) (ordered from the same manufacture as the cameras)—to prevent IR light from distorting the colors of the images
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.