Dynamic Multi-Process Liveness Detection for Identity Fraud Prevention
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Solution Overview
Problem
Existing living body judgement technologies are insufficient in preventing identity fraud, as they can be easily bypassed by using pre-prepared images that are designed to be recognized as living bodies by these technologies.
Innovation Solution
A judgement method that selects multiple living body judgement processes, determines their order of execution, and requires the subject to perform specific actions for each process, making it difficult for malicious individuals to prepare images that would pass all selected processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple living body judgement processes are selected and executed in a determined order, then the reliability of identity verification is improved, but the device complexity increases
Solution Approach 1:
The living body judgement system is divided into multiple independent judgement processes (first, second, third, and fourth processes) that can be selectively executed. Each process focuses on specific facial features (e.g., eye blinking, mouth movement, face orientation) and can be independently configured and evaluated, allowing the system to achieve high reliability through cumulative assessment while maintaining modular complexity management.
Solution Approach 2:
The system dynamically selects and orders multiple judgement processes based on predefined conditions and requirements. The execution sequence and selection of specific processes can be adjusted according to the verification needs, allowing the system to adapt its complexity level while maintaining reliable verification. This dynamic configuration enables the system to scale from simple to complex verification scenarios as needed.
2Measurement precision
If specific actions are required for each living body judgement process, then the ability to detect fraudulent images is improved, but the ease of operation deteriorates
Solution Approach 1:
The system provides instructive information to the subject in advance, clearly indicating what actions are required for each judgement process (e.g., blink eyes, move mouth, turn face). This preliminary guidance ensures that subjects understand the expected behaviors, enabling precise detection of living body characteristics while simplifying the interaction process. The advance instruction reduces confusion and improves both detection accuracy and user experience.
Solution Approach 2:
The system provides real-time feedback during the judgement processes, informing subjects of their current status and required actions. This feedback mechanism ensures that subjects can perform the correct actions to demonstrate they are living beings, while the system accurately captures and evaluates these actions. The interactive feedback loop enhances detection precision by ensuring proper action execution while maintaining ease of operation through clear communication.
3Object-affected harmful factors
If multiple judgement processes are executed sequentially, then the difficulty of preparing fraudulent images increases, but the loss of time increases
Solution Approach 1:
The system executes multiple judgement processes in a periodic or sequential manner, where each process builds upon the previous one. This structured approach ensures that fraudulent images must satisfy multiple independent criteria (different facial actions, orientations, and temporal patterns) rather than a single check. The periodic execution of diverse judgement processes significantly increases the difficulty of creating convincing fake images while managing verification time through efficient process ordering and parallel evaluation where possible.
Data Source
AI summary
A judgement method includes: selecting two or more living body judgement processes among a plurality of living body judgement processes; determining an order of executing the two or more selected living body judgement processes; executing the two or more selected living body judgement processes in the determined order; executing, in each of the two or more selected living body judgement processes: a processing of showing a subject an action required; a processing of acquiring a facial image containing a face of the subject when acting in accordance with the shown action; and a processing of judging whether the subject is of living body based on a feature of a section of the face contained in the facial image; and judging that the subject is of living body when judgement results obtained from the two or more selected living body judgement processes satisfy a predetermined condition.