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Correlation based system to assess the completeness and correctness of cognitive stimulation activities of elders

During a cognitive stimulation session where elders with cognitive decline perform stimulation activities, such as solving puzzles, we observed that they require constant supervision and support from their caregivers, and caregivers must be able to monitor the stimulation activity of more than one patient at a time. In this paper, aiming at providing support for the caregiver, we developed a vision-based system using an Phase-SDF filter that generates a composite reference image which is correlated to a captured wooden-puzzle image. The output correlation value allows to automatically verify the progress on the puzzle solving task, and to assess its completeness and correctness.