Digital Ring Size Measurement Using Finger Image Analysis
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Solution Overview
Problem
Existing methods for determining ring sizes are time-consuming and often inaccurate, requiring physical measurements and are challenging when purchasing jewelry for others.
Innovation Solution
A digital ring size measurement system using an image capturing device to calculate ring sizes by determining the diameter and circumference of a user's finger from digital images, with the aid of processors and data sets for accurate conversion to ring sizes, potentially incorporating augmented or virtual reality for user interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional physical measurement methods are used to determine ring size, then the measurement can be obtained, but the process is time-consuming and often inaccurate
Solution Approach 1:
The patent replaces the mechanical measurement system (physical ring sizers and manual measurement tools) with a digital image processing system. The system uses an image capturing device to capture photos of the finger, then uses computer vision algorithms to automatically detect finger contours, calculate circumference, and determine ring size. This substitution eliminates the need for physical contact and manual measurement, thereby reducing measurement time and improving consistency and accuracy across multiple measurements.
Solution Approach 2:
The patent creates a digital copy of the finger's physical dimensions through image capture. Instead of directly measuring the physical finger with tactile tools, the system captures a visual representation (image) of the finger and processes this digital copy to extract measurement data. This copying approach allows for non-contact measurement, reduces time required, and enables automated analysis that improves measurement accuracy while eliminating the need for physical measurement tools.
2Ease of operation
If physical measurement tools are used, then ring size can be determined, but the method is inconvenient and requires physical contact
Solution Approach 1:
The patent replaces complex mechanical measurement tools and procedures with a simplified digital imaging system. Instead of requiring users to manipulate physical ring sizers or measurement tapes, the system only requires capturing an image of the finger. The complexity is shifted from the user interaction side to the automated image processing side, making the user experience much simpler and more convenient while the system handles the complex analysis automatically.
Solution Approach 2:
The system enables users to perform their own ring size measurements without requiring assistance from jewelry staff or specialized measurement equipment. By using a standard image capturing device (such as a smartphone camera) and automated processing, the system allows users to independently determine their ring size at home, eliminating the need for in-store visits and professional measurement services.
3Reliability
If traditional measurement methods are used, then ring size can be approximated, but the accuracy is compromised due to friction and improper placement
Solution Approach 1:
The patent eliminates the mechanical interaction between measurement tools and the finger that causes friction and placement errors. By using optical imaging instead of tactile measurement, the system removes the sources of error related to tool placement, finger movement, and friction. The measurement becomes a visual rather than physical process, ensuring consistent and reliable results that are not affected by user technique or tool handling.
Solution Approach 2:
By creating a digital image copy of the finger, the system captures the exact visual state of the finger at the moment of measurement. This digital copy can be processed repeatedly with the same results, ensuring measurement consistency. The approach eliminates variability introduced by physical measurement techniques, as the image processing algorithms apply the same measurement criteria uniformly across all measurements, improving both reliability and precision.
Data Source
AI summary
A ring size measuring system to digitally measure a ring size of a user's finger including an image capturing device configured to capture a digital image of the user's finger, one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: receiving a digital image of a user's hand using the image capturing device, determining a distance between the image capturing device and the user's hand, and defining at least one-dimension point pair of a selected finger from the received digital image, wherein the one or more processors calculate a distance between the dimension point pair to calculate a diameter of the selected finger.