Real-Time Parameterized Avatar Face Generation

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Presentation transcript:

Real-Time Parameterized Avatar Face Generation Chris Maltzan Computer Science Adviser: Aaron Cass Psychology Adviser: Carin Perilloux

Imagine You Just Witnessed a Crime How will you describe the suspect? Sketch artist Make a composite yourself

Error in Composite Images Target Composite Memory Drawing Witness Sketch Artist Message Comprehension

Research Question Can we design an algorithm to assist users in real-time with the design of a composite image?

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How the Image Editor Works Zhou et al. (2010). Parametric reshaping of human bodies in images. ACM Trans. Graph, 29(4). 126:1-126:10.

EvoFIT: Creating a Composite Frowd, Hancock, Carson (2004). EvoFIT: A holistic evolutionary facial imaging technique for creating composites. ACM Trans. Appl. Percept, 1(1). 19-39.

EvoFIT: Under the Hood Frowd, Hancock, Carson (2004). EvoFIT: A holistic evolutionary facial imaging technique for creating composites. ACM Trans. Appl. Percept, 1(1). 19-39.

MakeHuman: A Digital Parameterized System Pros? -Digital representation of appearance -No pictures needed beforehand Cons? -Can create really bad images

A Wide Range of Possibility

The Algorithm

Hypothesis Participants will create composites in less time when using the algorithm. Participants will require less modifications to complete a composite with the algorithm. Composites created using the algorithm will be more similar to the target image than composites created without the algorithm.

Methods Two Treatments Between-subjects design Creation Phase, n = 16 Judgment Phase, n = 13

Creation Phase: Three consecutive targets:

Creation Phase: User Interface

Judgment Phase: New sample of participants Purpose: Are the composites useful (similar)?

Modifications by Factor

Time by Factor

Similarity Score by Factor

Time, Modifications, Similarity

Judgment Phase - Similarity

Composites Control Experimental

Composites Control Experimental

Composites Control Experimental

Discussion Was our hypothesis correct? Speed? Accuracy/Similarity Rating?

Future Work Algorithm Improvement: allowing more variation in symmetry Selective undo Compare with sketch artists

Questions? I would like to thank my advisers, Carin Perilloux and Aaron Cass for all of their guidance in this project. I would also like to thank Union College for the Student Research Grant awarded for use in this research.