Face Image Registration Using Guided Head Orientation Matching
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Solution Overview
Problem
Existing face recognition systems in vehicles require users to face the camera directly, which can lead to delays in registering or authenticating face data if the user is not aligned properly.
Innovation Solution
An image processing device and method that capture multiple face images with different orientations within a specific angle range, while displaying a video of a human face-imitating image changing orientation, ensuring that the user moves their face to match the video, thereby reducing the time required for registration or authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the user must face the camera directly for face recognition, then the accuracy of face data capture is improved, but the time required for registration or authentication increases when the user cannot align properly
Solution Approach 1:
The patent changes the parameter of acceptable face orientation from a single fixed direction (0 degrees) to a range of angles (first angle and second angle). The controller accepts face images where the face orientation is within the first angle from the camera's front direction or within the second angle from the display direction, thereby reducing the time for registration while maintaining sufficient capture accuracy.
2Quantity of substance
If multiple face images with different orientations are captured, then the completeness of face data is improved, but the complexity of the capture process increases
Solution Approach 1:
The system uses the display device to show a video of a human face imitating the required orientation changes. The user simply needs to imitate the video, and the system automatically captures multiple face images at different orientations. This self-guided approach reduces process complexity while ensuring sufficient face data is collected.
Solution Approach 2:
The system provides real-time feedback by displaying a video that shows the user their current face orientation relative to the desired orientations. This visual feedback guides the user to adjust their face position, making it easier to capture multiple orientations without increasing procedural complexity.
Data Source
AI summary
A controller of an image processing device performs registration or authentication of face data of a user by using a plurality of face images which are different from each other and in which orientations of a face captured by a camera are each within a first angle that is based on a state in which the user faces a front of the camera, and displays on a display a video in which a human face-imitating image changes its face orientation until the registration or the authentication is completed. A second angle formed by a direction from a seating position of the user toward the camera and a direction from the seating position of the user toward the display is smaller than the first angle.