Key Replication via Image Processing and Bitting Approximation
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Solution Overview
Problem
Conventional key replication methods require physical possession of the key for an extended period and substantial user training, and they struggle with accuracy due to poor image resolution and manual measurement inaccuracies.
Innovation Solution
A system that captures images of the key to generate a key blank using a key blank generating machine, which then uses these images to produce a replica key by approximating manufacturer bitting numbers, minimizing the need for physical possession and user training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual measurement methods are used to replicate a key from an image, then the process can be performed with simple equipment, but the accuracy of the replica key deteriorates due to measurement errors and poor image resolution
Solution Approach 1:
The patent replaces manual mechanical measurement methods with an automated optical imaging and digital processing system. The key replication process transitions from manual clay molding and measurement to automated image capture, digital image processing, and computer-controlled key cutting, thereby improving accuracy while maintaining ease of operation.
Solution Approach 2:
The patent creates a digital copy of the key through high-resolution imaging and processes this digital representation to generate accurate bitting numbers. This digital copying approach eliminates manual measurement errors and enables precise replication without requiring physical contact with the original key.
2Manufacturing precision
If conventional key replication methods requiring physical possession of the key are used, then the replica can be accurately copied, but the time required for replication increases and user training is needed
Solution Approach 1:
The system performs preliminary actions by capturing high-resolution images of the key and pre-processing these images to extract bitting information before the actual key cutting process. This allows the replication to proceed quickly once the key is inserted, eliminating the need for time-consuming manual measurements and user training.
Solution Approach 2:
The system enables self-service key replication where the key itself serves as the template. The optical imaging system automatically captures the key's features and the computer processing system autonomously determines the bitting numbers, eliminating the need for trained operators to perform manual measurements.
3Ease of operation
If measurements are manually obtained from key images, then the process can be performed without specialized equipment, but the accuracy deteriorates due to image resolution limitations and human error
Solution Approach 1:
The patent replaces manual measurement operations with automated digital image processing. The system uses computer algorithms to automatically measure cut depths from high-resolution images, eliminating human error and the limitations of manual measurement while maintaining ease of operation.
Solution Approach 2:
The system changes the measurement parameter from physical clay mold dimensions to digital image pixel measurements. By using high-resolution digital imaging and sophisticated image processing algorithms, the system achieves superior measurement precision compared to manual methods while keeping the operation simple for the user.
Data Source
AI summary
Embodiments relate to replicating a key from an image of the key when the key is unavailable to replicate the key from the key itself. In a first embodiment, a key blank of the key is generated when an end image of the end of the key is rotated to create a mirror image of the end image so that an outline of the mirror image is similar to a corresponding keyhole. A key blank generating machine generates a key blank of the key from the mirror image. In a second embodiment, a replica of the key is cut from the key blank when the maximum depths of cuts in the key image are measured. A bitting number database is queried for bitting numbers that correspond to the measured maximum depths. The bitting numbers are provided to a key machine to cut the key blank to generate a replica.