Ear Sizing System Using 2D Image Capture for Custom Earbuds
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Solution Overview
Problem
Conventional earbuds often fail to fit comfortably due to anatomical variations, leading to inadequate noise isolation and discomfort, with existing solutions like earbud adapters or custom fittings being either ineffective, costly, or inconvenient.
Innovation Solution
A system using 2D image capture from common devices like cameras or mobile phones to size ears for custom earpieces, eliminating the need for 3D imaging and enabling rapid, cost-effective, and safe production of custom-fitted earbud adapters without requiring skilled labor or uncomfortable molding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If full custom earbuds are manufactured using traditional molding processes, then manufacturing precision and fit quality are improved, but production cost and complexity increase significantly
Solution Approach 1:
The patent uses 2D image copying instead of physical 3D molding to capture ear geometry. A camera captures a 2D image of the ear, and software processes this image to create a digital model for manufacturing custom earbuds. This eliminates the need for physical impression materials, skilled mold makers, and complex molding processes, significantly reducing production cost while maintaining manufacturing precision.
Solution Approach 2:
The patent replaces the mechanical molding system with an optical-digital system. Instead of using physical impression materials and mechanical molding processes, the invention uses camera imaging and software processing to capture and analyze ear geometry, then generates manufacturing data. This substitution eliminates skilled labor requirements and reduces production complexity.
2Measurement precision
If 3D imaging systems are used to capture ear geometry for custom earpiece production, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent deliberately uses 2D imaging instead of 3D imaging to solve the contradiction. By capturing ear geometry in two dimensions and using software algorithms to extract dimensional information, the system achieves sufficient measurement precision for custom earpiece manufacturing while dramatically reducing device complexity. The 2D image contains enough geometric information when processed correctly, eliminating the need for complex 3D scanning hardware.
Solution Approach 2:
The patent uses 2D image copying as a simpler alternative to 3D imaging. A standard camera captures a 2D photograph of the ear, and software processes this copy to extract geometric measurements. This approach achieves the necessary measurement precision for manufacturing while using commonplace, low-complexity imaging devices that anyone can operate.
3Manufacturing precision
If custom earbud adapters are produced individually, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The patent performs preliminary digital modeling and sizing analysis before manufacturing begins. The software processes the 2D ear image to create a complete digital model and determine all necessary manufacturing parameters in advance. This preliminary digital preparation enables rapid production of custom earbuds without requiring iterative adjustments or skilled craftsmanship during the actual manufacturing process, thereby increasing productivity while maintaining precision.
Solution Approach 2:
The patent creates a complete digital copy of the ear geometry that can be stored and used for manufacturing. This digital model serves as a reusable template that can be quickly converted into manufacturing instructions, enabling efficient production of custom earpieces without repeating the measurement and analysis process for each unit.
Data Source
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AI summary
An ear measurement system and method include obtaining an image of an ear and an associated a calibration device, and analyzing the image to determine the size of desired portions of the ear. Such sizing is then used, for example, for fitting an earbud or earbud adapter.