Multi-Angle Face Authentication System with Direction Calculation
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Solution Overview
Problem
Conventional authentication systems face challenges in precisely capturing face images for individual authentication when the subject's face is not oriented directly forward, as conventional certificate photograph taking apparatus struggle to capture images from different angles, leading to insufficient information for accurate identification.
Innovation Solution
An authentication system comprising multiple image pickup units positioned to capture face images from different angles, a direction calculation unit to determine the subject's face orientation, and a selection unit to choose the optimal image for authentication, along with a lighting control unit to enhance visibility based on the calculated orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single image pickup unit is used to capture face images, then the device complexity is low and ease of operation is high, but the measurement precision of face orientation and the reliability of individual authentication are insufficient
Solution Approach 1:
The system divides the image pickup function into multiple independent image pickup units positioned at different locations. Each unit captures face images from its own perspective, enabling the system to detect face orientation more accurately by comparing multiple views rather than relying on a single complex pickup unit.
Solution Approach 2:
The system combines multiple simple image pickup units to achieve the functional equivalent of a complex single unit. By merging the data from multiple pickup units, the system achieves high measurement precision for face orientation while keeping each individual component simple and the overall system manageable.
2Reliability
If multiple image pickup units are used to capture face images from different angles, then the measurement precision of face orientation improves, but the device complexity increases
Solution Approach 1:
The authentication system is segmented into distinct functional modules: multiple image pickup units for data collection, a direction calculation unit for processing, and an authentication unit for decision-making. This segmentation allows each module to perform its specific function reliably while keeping the overall system complexity manageable through clear functional separation.
Solution Approach 2:
The system transitions from two-dimensional front-facing images to three-dimensional spatial information by adding image pickup units at different positions and angles. This dimensional expansion provides depth information and face orientation data that significantly improve authentication reliability without requiring overly complex processing.
3Measurement precision
If face images are captured from oblique angles to improve authentication accuracy, then the measurement precision of individual identification improves, but the ease of operation decreases
Solution Approach 1:
The system automatically performs direction calculation and image selection without requiring user intervention. The direction calculation unit computes the face orientation from multiple captured images, and the system automatically selects the most appropriate image for authentication, eliminating the need for users to manually adjust their pose or select images.
Solution Approach 2:
The system captures multiple face images from different angles in advance before authentication is needed. By preliminarily acquiring images from various perspectives, the system ensures that regardless of the user's actual face orientation during authentication, suitable images are already available for accurate identification.
4Manufacturing precision
If conventional certificate photograph taking apparatus are used to capture face images, then the device complexity is low, but the measurement precision of face orientation and the quality of authentication images are insufficient
Solution Approach 1:
The photograph taking system is divided into multiple image pickup units positioned to capture images from different angles simultaneously. This segmentation allows the system to capture both front-facing and oblique angle images, providing the precision needed for high-quality certificate photographs that reveal face orientation and three-dimensional features.
Solution Approach 2:
The system adds angular dimension to traditional front-facing photograph capture by positioning image pickup units at multiple locations. This enables the capture of oblique angle images that reveal depth information and facial features from different perspectives, significantly improving certificate photograph quality for authentication purposes.
Data Source
AI summary
A face image in which a user's face turns to a direction different from the front is picked up clearly and individual authentication is executed more precisely. An authentication system for executing authentication of a user is provided, wherein the authentication system comprises a first image pickup unit for picking up a face image of the user; a second image pickup unit for picking up a face image of the user from a direction different from that of the first image pickup unit, a direction calculation unit for acquiring a direction to which the user's face turns on the basis of the face images picked up by the first and the second image pickup units, and a selection unit for selecting at least one of the face images picked up by the first and second image pickup units on the basis of the direction to which the user's face turns.