Camera-Based Electronic Signature Capture Without Specialized Input Devices
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Solution Overview
Problem
Existing methods for capturing electronic signatures require additional devices such as scanners, touch-screens, or mice, which may not be available in all settings and can be challenging for physically impaired individuals.
Innovation Solution
A cloud-based system and method that uses an imaging device to capture image frames of a signing device, such as a finger or object, and processes these frames to generate an electronic signature by connecting identified pixels to form a line drawing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing electronic signature capturing methods are used (scanner, touch-screen, mouse), then signature capture accuracy is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential function of signature capture from complex devices (scanners, touch-screens, mice) and implements it using only a standard camera and image processing algorithms. The signature capture capability is separated from the need for specialized input devices, achieving accurate signature capture through image frame analysis of natural writing movements.
Solution Approach 2:
The patent replaces mechanical input devices (mouse, trackball, touch-screen) with an optical system (camera-based image capture). Instead of requiring physical interaction with mechanical components, the system captures signature data through optical imaging and computational processing of image frames, eliminating the need for complex mechanical systems.
2Measurement precision
If additional devices are required for signature capture, then signature capture precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system allows users to perform signature capture using their own device's existing camera without requiring additional specialized equipment. The smartphone or camera device itself provides all necessary functions for signature capture, making the process self-sufficient and eliminating barriers related to device availability and operational complexity.
3Manufacturing precision
If specialized input devices are used, then signature data quality is improved, but adaptability deteriorates
Solution Approach 1:
The patent makes the signature capture system universal by using a standard camera that is already present in most devices. The same camera hardware serves multiple purposes: general photography, video recording, and signature capture. This multi-functionality eliminates the need for dedicated signature capture devices and enables the system to work across different platforms and device types.
Data Source
AI summary
Methods and systems for generating electronic signatures are disclosed. In some embodiments, the method includes: storing pixel features of a signing device; capturing, via an imaging device, a plurality of image frames including the pixel features of the signing device; identifying in the plurality of image frames, by a processor, first pixels matching the stored pixel features of the signing device; generating, by the processor, a first image including the identified pixels; and connecting, by the processor, the identified pixels to form at least one line drawing representing a signature.