Identity Card Imaging System with Diffused Illumination
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Solution Overview
Problem
Current systems for extracting data from identity documents, such as driver's licenses and passports, are inefficient due to poor resolution characteristics and high error rates, requiring manual input which is time-consuming and prone to errors.
Innovation Solution
A system utilizing a digital camera with a lens and light sources, equipped with a light diffuser for even illumination, and a processor for image analysis, which can acquire high-resolution images of both sides of identity cards and extract textual data using OCR, assisted by prior knowledge of the document template, to minimize errors and improve throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scanning technology is used for data extraction, then the system is simple to operate, but the resolution characteristics are poor and error rates are high
Solution Approach 1:
The patent replaces mechanical scanning technology with a digital camera-based imaging system. This substitution enables high-resolution capture of identity documents without the mechanical limitations of scanning devices, directly improving measurement precision while maintaining operational simplicity through automated image processing and OCR techniques.
2Productivity
If manual data extraction is performed, then the system is adaptable to various documents, but the process is time-consuming and error-prone
Solution Approach 1:
The system implements self-service through automated image processing and OCR technology. The digital camera captures the document, the system automatically processes the image to enhance quality, and OCR algorithms extract text data without human intervention. This eliminates manual typing errors and significantly increases extraction speed while maintaining high reliability through consistent automated processing.
Solution Approach 2:
The system incorporates feedback mechanisms where the captured image is analyzed and processed to improve extraction accuracy. The system can detect document orientation, adjust processing parameters based on document type recognition, and verify extracted data against known formats, creating a closed-loop system that continuously optimizes extraction reliability.
3Measurement precision
If high-resolution imaging is used, then data extraction accuracy improves, but the throughput decreases
Solution Approach 1:
The system performs preliminary actions by capturing the entire document image in high resolution simultaneously, rather than scanning line-by-line. This allows the full document to be processed in parallel through image enhancement and OCR algorithms, maintaining high extraction accuracy while significantly improving throughput compared to sequential scanning methods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves accurate and rapid data extraction with reduced errors, capable of detecting authentication marks and information encoded in non-textual forms like barcodes, and supports multi-spectral imaging for enhanced reliability and accuracy.
Implementation Method 1
a box housing a digital camera equipped with a lens and at least one light source
Implementation Method 2
the light source is equipped with light diffuser to provide even illumination of the identity document
Implementation Method 3
acquire a digital image of the identity document placed against the front face
Data Source
AI summary
The present invention provides a unique and novel system for acquiring digital images of identification documents such as drivers license, passports, or medical insurance records using a digital camera so as to establish a high resolution image and extracting data automatically with machine vision tools so as to acquire accurate data. The present invention teaches also a system that acquires multi-spectral images of both sides of the identification document.