EEG Content Scoring for Objective Projection Evaluation
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Solution Overview
Problem
Existing methods for evaluating projection content in enclosed environments are subjective and lack objective accuracy, relying heavily on user interviews and questionnaires, which are influenced by herd mentality and privacy concerns, and do not adequately consider user emotional responses.
Innovation Solution
Utilizing brain-computer interaction technology to analyze electroencephalogram (EEG) signals to objectively evaluate projection content by correlating EEG energy values with emotional valence, arousal, concentration, fatigue, motion sickness, and preference indices, calculating a projection content evaluation value through weighted accumulation of EEG energy values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If interview or questionnaire methods are used for evaluation, then user feedback can be collected, but the results are greatly influenced by subjective factors and herd mentality
Solution Approach 1:
The patent replaces subjective human evaluation methods (interviews and questionnaires) with objective physiological measurement systems. Specifically, it uses eye-tracking technology to measure actual visual attention and EEG technology to measure brain activity, replacing the mechanical system of human self-reporting with automated physiological sensing systems that provide objective, quantifiable data without being influenced by subjective factors or herd mentality.
2Device complexity
If subjective evaluation methods are used, then data collection is simple, but personal privacy protection concerns arise
Solution Approach 1:
The patent introduces physiological measurement devices (eye-trackers and EEG sensors) as intermediaries between the user and the evaluation system. These devices objectively measure physiological responses without requiring users to disclose personal information or subjective opinions, thereby mediating the evaluation process in a way that maintains privacy while still gathering comprehensive evaluation data.
3Illumination intensity
If basic design elements are considered in projection content, then visual presentation can be enhanced, but comprehensive evaluation of user experience is insufficient
Solution Approach 1:
The patent implements a feedback mechanism that uses physiological measurement data to evaluate and optimize projection content. By continuously measuring users' visual attention (eye-tracking) and brain activity (EEG), the system provides feedback on how projection content affects user experience, enabling iterative optimization that goes beyond basic design elements to comprehensively address emotional and cognitive responses.
Data Source
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AI summary
The present disclosure relates to a method and a device for evaluating projection content in an enclosed environment, and a storage medium. The method comprises: acquiring electroencephalogram (EEG) data at a plurality of predetermined regions of the brain of a user, the EEG data being collected during the user watching the projection content; extracting feature of the acquired EEGs at each of the predetermined regions, so as to obtain EEG energy values of a plurality of frequency bands of the EEGs at each of the predetermined regions; determining, from the extracted EEG energy values, a plurality of EEG energy values respectively corresponding to a plurality of indexes for evaluating the projection content according to the correlations between the EEG energy values and the indexes; calculating a projection content evaluation value according to each of the plurality of EEG energy values and a corresponding weight in a plurality of weights respectively corresponding to the plurality of indexes; and evaluating the projection content using the projection content evaluation value. The method of the present disclosure can evaluate the projection content in an enclosed environment objectively, scientifically and accurately.