LifeLogging: Personal Big Data

Computer Vision for Lifelogging

“…However, there is still a lack of consensus for a definition of lifelogging. In this chapter, we borrow the definition from [5] as:…”

“…In a simple implementation of assistive living personal data access, and one that many readers will be familiar with, the personal quantified self data gathered by wearable fitness trackers and related sensors is typically aggregated into meaningful infographics and charts, summarising the activities or performance of the individual across a number of useful dimensions. However, given our definition of lifelogging that includes wearable camera data, along with potentially other sources of data, then this simple data aggregation summarisation approach will not be appropriate and more advanced forms of visualisation are required [5].…”

“…The initial work in the area from Microsoft Research presented the SenseCam image browser which facilitated rapid playback of image sequences, along with a manual event segmentation tool [23]. Such an interface presents a stop-motion style rapid playback through visual life logs and they provide us with a baseline visualisation of visual lifelog data, though one that quickly presents challenges to the user due to the lack of data organisation when the archive of data grows to weeks, months or even years [5].…”

“…In this case, both the privacy concerns of lifelogger and bystanders who might be captured by visual devices can be alleviated. Currently, we can deal with the privacy issues by integrate "privacy by design" into the development process [5,96,97], i.e., embedding the issues as core considerations throughout the entire life cycle of this technology. More specifically, seven principles [98] can be taken into account when developing a privacy-aware lifelogging systems.…”

Periodicity intensity for indicating behaviour shifts from lifelog data

“…Lifelogging is the ambient, digital capture of any of several possible data sources which log the ordinary day to day activities of a person performing typical activities of daily living [1]. Devices used for lifelogging can include accelerometers, GPS trackers, wearable cameras, or other sensors to measure aspects of our physiology like heart rate.…”