Presentacin de PowerPoint

Francisco Flrez-RevueltaInterdisciplinary Hub for the Study of Health and Age-related conditions (IhSHA)

Visual monitoring of people in private spaces

Visual monitoring in public spaces

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.2

Sensors in private spaces

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.3

Cameras in private spaces

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.4

Fabien, C., Deepayan, B., Charith, A., & Mark, S. (2011). Video based technology for ambient assisted living: A review of the literature. Journal of Ambient Intelligence and Smart Environments (JAISE), 3(3), 253-269

Chaaraoui, A. A., Climent-Prez, P., & Flrez-Revuelta, F. (2012). A review on vision techniques applied to human behaviour analysis for ambient-assisted living. Expert Systems with Applications, 39(12), 10873-10888

Computer vision in AALFall detection and prevention

Identification of Activities of Daily Living

Behaviour monitoring

Physiological monitoring

Person-environment interaction

Rehabilitation

Support to people with cognitive impairment

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.5

Cons:Cluttered environmentsOcclusionsPrivacy preservationLimited field of view

Pros:Richer informationTracking of coarse and fine movements/actionsSynergies with other servicesEase to interpret

Pros and cons

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.6

Idea behind

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.7

Idea behind

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.8

Appropriate measures need to be considered to maintain privacy and increase acceptance

The notion of privacy is highly subjective. It depends on theindividual.

Several factors are involved:The private thingThe observer

An image conveys the following information about an individual:Identity (Who?)Appearance (How?)Activity / Behaviour / Event (What?)Time (When?)Location (Where?)

Privacy preservation

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.9

Image Redaction: Modify an image or a sequence of images so as to protect objects (visual clues) appearing on them

ButThe image must retain its utility

A trade-off between privacy protection and image utility is needed

Privacy must be adaptable to the individual

Ensuring visual privacy

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.10

We propose a privacy protection scheme that is aware of the context

A set of redaction methods is used

A context describes any situation:Identity of the observerIdentity of the observed person (to retrieve the privacy profile)Closeness between person and observer, e.g. relative, doctor, neighbourAppearance (dressed?)Location, e.g. kitchen, living roomEvent, e.g. cooking, watching TV, fall

Users provide their privacy preferences by linking instances of the context with protection/visualisation methodsPrivacy by context

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.11

Privacy by context

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.12

Visualisation levels

OriginalPixelateBlurEmbossSilhouetteSkeletonAvatarInvisibility

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.13

Visualisation levels

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.14

Tests with RGB-D cameras

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.15

Tests with RGB cameras

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.16

Improvement in the calculation of the contextIdentity (Who?)Appearance (How?)Activity / Behaviour / Event (What?)Time (When?)Location (Where?)

Improvement in foreground/person detection

Most of activity/behaviour identification systems are validated in labs, not in real environments

Privacy of the environment

Main issues: current and future work

AAL refers to intelligent systems for a better, healthier and safer life in the preferred living environment in order to compensate age-related functional limitations.17

Francisco (Paco) Flrez-Revuelta F.Florez@kingston.ac.uk @fflorezrevuelta staffnet.kingston.ac.uk/~ku48824 franciscoflorezrevuelta

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Blur Pixelation Emboss Silhouette Skeleton Invisibility