We propose a new approach to localizing handle-like grasp affordances in 3-D point clouds. The main idea is to identify a set of sufficient geometric conditions for the existence of a grasp affordance and to search the point cloud for neighborhoods that satisfy these conditions. Our goal is not to find all possible grasp affordances, but instead to develop a method of localizing important types...

Gibson developed an interactionist view of perception and action that focused on information that is available in the environment. He thereby rejected the still-prevalent framing assumption of factoring external-physical and internal-mental processes. The interactionist alternative, which focuses on processes of agent-situation interactions, is taken in ecological psychology as well as in recen...

This paper addresses the affordances of the social and business environment of a virtual world, which we classify into three types: physical, relational, and transactional affordances. This preliminary study contributes to research in virtual worlds design and the study of the theory of affordances by addressing the importance of affordances in the design and support of business functions in vi...

The computational model presented here, Grasping Affordances (GA) model, provides a precise explication of the notion of affordance in the context of grasping actions carried out by monkeys. This explication is consistent with both direct perception theories and neuroscientific models of monkey brains, insofar as the identification of grasping affordances requires, according to this model, neit...

The affordances concept describes the possibilities for goal-oriented action that technical objects offer to specified users. This notion has received growing attention from IS researchers. However, few studies have gone beyond contextualizing parts of the concept to a specific setting – the tip of the iceberg. In this research-in-progress paper, we report on our efforts to further develop the ...

While it is generally accepted that patient centred care should be the guiding principle for the delivery of health services, it is not yet clear how this should be digitalised. What is clear, however, is that the current IT solutions are not satisfactory. In this research, we suggest the affordance construct as an analytical lens to understand how technological artefacts and human agency can g...

Affordances have been introduced in literature as action opportunities that objects offer, and used in robotics to semantically represent their interconnection. However, when considering an environment instead of an object, the problem becomes more complex due to the dynamism of its state. To tackle this issue, we introduce the concept of Spatio-Temporal Affordances (STA) and Spatio-Temporal Af...

Using a case study of health information systems (HIS) in Kenya, we seek to better understand how HIS afford or constrain the action of local actors in provisioning health care in developing countries. We developed a theoretical perspective based on institutional theory that served as a lens to interpret the relationship between institutions and users’ perceptions of IT constraints and affordan...

Successfully performing everyday behaviors requires perceiving affordances-possibilities for behavior that depend on the fit between environmental properties and action capabilities. Whereas affordances for some behaviors are primarily constrained by relatively static geometric properties of the perceiver (non-launching behaviors such as stepping), others are additionally constrained by dynamic...

This paper uses an evaluation method for Information Communication Technology (ICT) in education adapted from Morgan (2007) to conduct a comparison between the Apple iPod, Nintendo DS and Nintendo Wii, in order to assess the potential cognitive impact on learners of the affordances of each ICT device. The ICT evaluation method uses the concept of ‘mediation’ to link cognitive impacts on learner...