Microsoft SenseCam

Microsoft's SenseCam is a lifelogging camera with fisheye lens and trigger sensors, such as accelerometers, heat sensing, and audio, invented by Lyndsay Williams, patent[1] granted in 2009. Usually worn around the neck, Sensecam is used for the MyLifeBits project, a lifetime storage database. Early developers were James Srinivasan and Trevor Taylor.

Sensecam as typically worn, in comparison with its predecessor (Wearable Wireless Webcam) and its successor (Memoto)

Earlier work on neck-worn sensor cameras with fisheye lenses was done by Steve Mann, and published in 2001.[2][3]

Microsoft Sensecam as well as Mann's earlier sensor cameras, and subsequent similar products like Autographer, Glogger and the Narrative Clip, are all examples of Wearable Computing.[4]

Sensecam photo of King's College, Cambridge

SenseCam prototype circa 2003

Wearable neck-worn cameras contribute to an easier way of collecting and indexing one's daily experiences by unobtrusively taking photographs whenever the internal sensor is triggered by a change in temperature, movement, or lighting. The Sensecam[5] is also equipped with an accelerometer, which is used to trigger images and can also stabilise images so as to reduce blurriness. The camera is usually worn around the neck via a lanyard.

The photos represent almost every experience of its wearer's day. They are taken via a wide-angle lens in order to capture an image that is likely to contain most of what the wearer can see. The SenseCam uses a flash memory which has the means to store upwards of 2,000 photos per day as .jpg files, though more recent models with larger and faster memory cards mean a wearer typically stores up to 4,000 images per day. These files can then be uploaded and automatically viewed as a daily movie, which can be easily reviewed and indexed using a custom viewer application running on a PC. It is possible to replay the images from a single day in as little as a few minutes.[5] An alternative way of viewing images is to have a day's worth of data automatically segmented into 'events' and to use an event-based browser which can view each event (of 50, 100 or more individual SenseCam images) using a keyframe chosen as a representative of that event.

SenseCams have mostly been used in medical applications, particularly to aid those with poor memory as a result of disease or brain trauma. Several studies have been published by Chris Moulin, Aiden R. Doherty and Alan F. Smeaton[6] showing how reviewing one's SenseCam images can lead to what Martin A. Conway, a memory researcher from the University of Leeds, calls "Proustian moments",[7] characterised as floods of recalled details of some event in the past. SenseCams have also been used in lifelogging, and one researcher at Dublin City University, Ireland, has been wearing a SenseCam for most of his waking hours, since 2006, and has generated over 13 million SenseCam images of his life.[8]

In October 2009, SenseCam technology was adopted by Vicon Revue and is now available as a product.[9]

There is a wiki dedicated to SenseCam technical issues, software, news, and various research activities and publications about, and using, SenseCam.[10]