Figure 2.

A sample of digital images collected by SenseCam. These images demonstrate the direct observation of journey mode possible from the first-person point-of-view. Clockwise from top left, walking, cycling, driving, using the London Underground and riding a local bus can be clearly seen and distinguished from each other.

Kelly et al. International Journal of Behavioral Nutrition and Physical Activity 2011 8:44   doi:10.1186/1479-5868-8-44
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