Spectacle Image Capture Surface for Fast Virtual Try-On Modeling
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Solution Overview
Problem
Existing methods for 3D modeling of eyeglasses for virtual try-on require significant resources, time, and skilled personnel, leading to high costs and delays in making new eyeglass models available for virtual try-on.
Innovation Solution
A low-cost, user-friendly device and method for acquiring eyeglass images using a flat surface with specific features like a straightening tool, size reference, and non-reflective acquisition zone, along with a rectification method to correct perspective and color discrepancies, allowing unqualified individuals to capture usable images for augmented reality try-on.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If 3D modeling is performed using traditional image acquisition methods, then image quality and modeling accuracy are improved, but device complexity and operational difficulty increase
Solution Approach 1:
The device segments the image acquisition process into distinct functional zones: a positioning zone with geometric patterns for alignment, an acquisition zone with controlled lighting for glass capture, and a reference zone with colorimetric targets. This segmentation allows each zone to optimize for its specific function while keeping the overall device simple and portable.
Solution Approach 2:
The device introduces an intermediary flat support structure with predefined geometric patterns and reference markers that mediates between the portable device and the glasses. This intermediary provides the necessary registration and alignment functions without requiring complex active sensors or positioning mechanisms.
2Manufacturing precision
If 3D modeling is performed using professional modeling tools, then modeling quality is improved, but loss of time and operational complexity increase
Solution Approach 1:
The device performs preliminary actions by pre-configuring the flat support with geometric patterns, colorimetric targets, and lighting arrangements before image acquisition. This preliminary setup eliminates the need for complex real-time calibration and processing during the modeling phase, significantly reducing operational time while maintaining quality.
Solution Approach 2:
The device enables self-service modeling by providing all necessary reference markers, lighting, and positioning aids integrated into the portable unit. Users can perform high-quality 3D modeling without requiring professional operators or complex software, making the process accessible to non-experts and dramatically reducing the time from glass arrival to virtual try-on availability.
3Ease of operation
If portable devices are used for image capture, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The device applies local quality by creating a controlled measurement environment on the flat support surface. The acquisition zone features specific lighting conditions, colorimetric references, and geometric patterns that locally optimize measurement precision. This localized control allows portable devices to achieve professional-grade positioning accuracy without requiring the entire system to be complex.
Solution Approach 2:
The device changes key parameters of the imaging environment by controlling lighting intensity and direction in the acquisition zone, fixing the geometric configuration of reference markers, and standardizing the background colorimetry. These parameter changes create consistent, measurable conditions that compensate for the limitations of portable device sensors, enabling precise measurements while maintaining ease of operation.
Data Source
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AI summary
The invention relates to a device (1) for acquiring images of a pair of spectacles, comprising a flat surface defined by an outline (2) having a known shape and dimensions, the flat surface being characterised in that it comprises at least, on the periphery thereof: - a straightening means (3), - a size reference (4), and in the centre: - an acquisition area (6) having a homogenous, non-reflective colour, the acquisition area (6) comprising at least two openings (7, 7') intended to support the legs of the pair, and at least one position marker (8) representing the pupils of a wearer, so as to facilitate the height positioning of the spectacle lenses in the acquisition area (6).