Non-contact Pulse Wave Detection via Skin Region Analysis
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Solution Overview
Problem
Conventional systems for detecting pulse waves in game players do not effectively account for severe fluctuations and fail to estimate levels of concentration or excitement, while existing programs neglect the consideration of pulse wave fluctuations during gameplay.
Innovation Solution
A pulse wave detection device and method that acquire images of players, set detection areas on their skin, and detect pulse waves non-contactually, allowing for the estimation of concentration and evaluation of game interest using heart rate and stress variations, with additional features for evaluating games based on multiple players' concentrations and predicting intense scenes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pulse wave detection is performed on players during game play, then player state estimation (concentration, excitement) can be achieved, but the system fails to account for severe fluctuations in pulse wave
Solution Approach 1:
The system changes the parameter of pulse wave analysis by detecting not just the basic pulse wave but also its fluctuations and changes over time. The evaluation unit analyzes the temporal characteristics and variations of pulse waves to identify severe fluctuations, enabling both accurate detection and reliable handling of fluctuating physiological signals during intense game play.
2Measurement precision
If biometric information detection is used to determine sleeping state, then sleep detection can be achieved, but concentration and excitement levels during gameplay cannot be estimated
Solution Approach 1:
The pulse wave detection device is designed with multi-functionality to handle various states. The same pulse wave detection mechanism can determine sleeping state (as in conventional systems) while also estimating concentration and excitement levels during gameplay through analysis of pulse wave fluctuations. This universal approach allows a single system to serve multiple evaluation purposes.
Solution Approach 2:
The system dynamically adapts its analysis based on the detected state. By continuously monitoring pulse wave characteristics and their changes over time, the system can distinguish between different states (sleeping vs. awake vs. concentrated) and provide appropriate estimations for each, enabling versatile state detection across different scenarios.
3Ease of operation
If non-contact pulse wave detection is implemented, then player state can be detected without contact, but detection area selection becomes critical for accuracy
Solution Approach 1:
The detection area setting unit strategically selects specific local areas on the player's body (such as the face) for pulse wave detection. By focusing on areas with prominent blood vessel visibility and suitable skin properties, the system maintains non-contact detection capability while ensuring high measurement precision through localized optimization of detection parameters.
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 accurate non-contact pulse wave detection and estimation of player concentration, enhancing game evaluation and viewer engagement by predicting intense scenes and adjusting game content accordingly.
Implementation Method 1
a pulse wave is detected from the luminance signal of the biological region from which the frequency band component was extracted
Data Source
AI summary
A content evaluation device is a pulse wave detection device that detects the pulse wave of a player during game play, comprising an image acquisition unit, a detection area setting unit, and a pulse wave detection unit. The image acquisition unit acquires an image including a player. The detection area setting unit sets a detection area that includes the skin of the player included in the image acquired by the image acquisition unit. The pulse wave detection unit detects the pulse wave of the player from the detection area set in the detection area setting unit.