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Assisting persons with dementia during handwashing using a partially observable Markov decision process.

Hoey, Jesse ; Bertoldi, Axel von ; Poupart, Pascal ; Mihailidis, Alex

The 5th International Conference on Computer Vision Systems, 2007
Bielefeld, 21. - 24. März 2007

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Abstract:
This paper presents a real-time system to assist a person with dementia wash their hands. Assistance is given in the form of verbal and/or visual prompts, or through the enlistment of a human caregiver's help. The system uses only video inputs, and combines a Bayesian sequential estimation framework for tracking hands and towel, with a decision theoretic framework for computing policies of action -- specifically a partially observable Markov decision process (POMDP). A key element of the system is the ability to estimate and adapt to user states, such as awareness, responsiveness and overall dementia level. We demonstrate the system in a set of simulation experiments, and we show examples of real-time interactions with actors.


Keywords: assistive technology, human-computer interaction, video analysis, decision making
Institution: Faculty of Technology, Research Groups in Informatics
DDC classification: Data processing, computer science, computer systems

Suggested Citation:
Hoey, Jesse ; Bertoldi, Axel von ; Poupart, Pascal ; Mihailidis, Alex  (2007)  Assisting persons with dementia during handwashing using a partially observable Markov decision process.. The 5th International Conference on Computer Vision Systems, 2007


URL: http://biecoll.ub.uni-bielefeld.de/volltexte/2007/12



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