Graduation Year

2023

Document Type

Dissertation

Degree

Ph.D.

Degree Name

Doctor of Philosophy (Ph.D.)

Degree Granting Department

Computer Science and Engineering

Major Professor

Shaun Canavan, Ph.D.

Committee Member

Dmitry Goldgof, Ph.D.

Committee Member

Heather Agazzi, Ph.D.

Committee Member

Tempestt Neal, Ph.D.

Committee Member

Pei-Sung Lin, Ph.D.

Keywords

Autism, Emotion, Expression, Age

Abstract

Human behavior analysis is an important application area of artificial intelligence. Usingdata collected from sensors (e.g., cameras), human behavior including, but not limited to, emotions, expressions, body movement, and eye gaze are analyzed. This analysis is useful in applications in diverse fields ranging from healthcare, defense, education, and marketing. Considering this, in this dissertation, we have proposed new approaches to emotion and expression recognition, subject identification, and classification of autism spectrum disorder. More specifically, this dissertation has the following contributions: 1) A new approach for multimodal ubiquitous emotion recognition is proposed; 2) Investigation into the impact of large expression variations on 3D subject identification is detailed; 3) An approach to generalizing expression across age ranges (children vs. elderly) is proposed; 4) This is the first work to propose using self-report questionnaire data to classify autism spectrum disorder across age ranges; and (5) This is the first work to proposed a context-based approach to classifying videos of children at risk for autism spectrum disorder.

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