Wearable Lie Detection via Facial and Body Image Analysis

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Solution Overview

Problem

Existing wearable lie detection technologies are complex, costly, and inconvenient to use, making it difficult to monitor the truthfulness of communications using a simple and portable device.

Innovation Solution

A wearable apparatus equipped with an image collector, controller, and output device that acquires and analyzes facial and body images to determine interest and credibility by comparing body and facial image changes over time, using contactless pulse oximetry for heart rate analysis and pupil area comparison.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a traditional lie detector is used to detect truthfulness, then measurement precision is improved, but device complexity and ease of operation deteriorate

Engineering Contradiction:
Improvetruthfulness detection accuracyVSAvoidlie detector system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical/electrical lie detector systems with an optical-based image analysis system. The wearable apparatus uses image collectors (cameras) to capture facial images and body images, which are then analyzed by a controller to detect truthfulness indicators such as pupil area changes, facial expressions, and body language, eliminating the need for complex contact-based detection equipment.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses image copies (photographs/videos) of the subject's facial and bodily features as substitutes for direct physiological measurement. By analyzing visual copies of facial expressions, pupil size, and body posture from captured images, the system determines truthfulness without requiring direct contact with the subject's body or complex medical equipment.

Inventive Principle:
Principle #26Copying

2Measurement precision

If a traditional lie detector is used to detect truthfulness, then measurement precision is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvetruthfulness detection accuracyVSAvoidlie detector operation convenience
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces complex manual operation of traditional lie detectors with automated image capture and analysis. The wearable apparatus automatically captures facial and body images using integrated cameras and processes them through algorithms that detect truthfulness indicators, eliminating the need for operators to manually connect electrodes or interpret complex physiological signals.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs self-service by automatically capturing images, analyzing them for truthfulness indicators, and generating results without requiring external operators. The wearable apparatus independently executes the entire detection process from image acquisition to truthfulness assessment, making it as easy to use as wearing the device itself.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If traditional detection methods are used, then measurement precision is improved, but loss of time increases due to repeated tests

Engineering Contradiction:
Improvedetection accuracyVSAvoidtime for repeated testing
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent enables continuous truthfulness monitoring by capturing and analyzing images in real-time during conversations. The wearable apparatus continuously records facial expressions, pupil changes, and body language, providing ongoing assessment rather than requiring discrete repeated tests, thus maintaining measurement precision while eliminating time loss.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system performs preliminary analysis of multiple image parameters (facial expressions, pupil area, body posture) simultaneously to establish baseline behavior patterns before making truthfulness determinations. This preliminary action allows for more accurate single-pass detection without requiring repeated testing to confirm results.

Inventive Principle:
Principle #10Preliminary action

4Measurement precision

If traditional lie detectors are used, then measurement precision is improved, but device complexity deteriorates

Engineering Contradiction:
Improvetruthfulness detection accuracyVSAvoidsystem structure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The wearable apparatus integrates multiple functions into a single device: image collection for facial expressions, image collection for body language, contactless pulse oximetry for heart rate monitoring, and GPS for location tracking. This multi-functional integration maintains measurement precision across multiple parameters while reducing overall system complexity compared to separate specialized devices.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges multiple detection capabilities (facial image analysis, body image analysis, heart rate monitoring via contactless pulse oximetry, and pupil area measurement) into a single integrated wearable apparatus. The controller processes all these inputs together to comprehensively assess truthfulness, eliminating the need for multiple separate complex devices.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables convenient, cost-effective monitoring of conversation partner's truthfulness and interest through image analysis, providing accurate output results without the need for direct contact or repeated tests.

Implementation Method 1

an image collector configured to acquire facial images and body images of an interaction partner

Methodology Applied
Scientific EffectOptical imaging: Photography

Implementation Method 2

a controller connected with the image collector and configured to analyze the facial images and the body images to achieve analysis results

Methodology Applied
Scientific EffectImage processing: Image Processing

Implementation Method 3

using contactless pulse oximetry for heart rate analysis

Methodology Applied
Scientific EffectContactless pulse oximetry: Absorption Spectroscopy

Implementation Method 4

pupil area comparison

Methodology Applied
Scientific EffectPupil area comparison: Photography

Data Source

PatentUS10325144B2Wearable apparatus and information processing method and device thereof
Publication Date: 2019.06.18 BOE TECHNOLOGY GROUP CO LTD
  • US10325144B2 patent drawing
  • US10325144B2 patent drawing
  • US10325144B2 patent drawing

AI summary

A wearable apparatus, including: an image collector (11), configured to acquire facial images and body images of an interaction partner who is interacting with the user of the apparatus; a controller (12) connected with the image collector and configured to analyze the facial images and the body images to achieve analysis results; and an output device (13) connected with the controller and configured to output the analysis results. The wearable apparatus is portable and of low cost, and capable of determining the psychological situation of the current interaction partner according to the images information of the interaction partner based on simple operations. An information processing method and an information processing apparatus of the wearable apparatus are also provided.