Organic user interface

In human–computer interaction, an organic user interface (OUI) is defined as a user interface with a non-flat display. After Engelbart and Sutherland's graphical user interface (GUI), which was based on the cathode ray tube (CRT), and Kay and Weiser's ubiquitous computing, which is based on the flat panel liquid-crystal display (LCD), OUI represents one possible third wave of display interaction paradigms, pertaining to multi-shaped and flexible displays. In an OUI, the display surface is always the locus of interaction, and may actively or passively change shape upon analog (i.e., as close to non-quantized as possible) inputs. These inputs are provided through direct physical gestures, rather than through indirect point-and-click control. Note that the term 'Organic' in OUI was derived from organic architecture, referring to the adoption of natural form to design a better fit with human ecology. The term also alludes to the use of organic electronics for this purpose. In human–computer interaction, an organic user interface (OUI) is defined as a user interface with a non-flat display. After Engelbart and Sutherland's graphical user interface (GUI), which was based on the cathode ray tube (CRT), and Kay and Weiser's ubiquitous computing, which is based on the flat panel liquid-crystal display (LCD), OUI represents one possible third wave of display interaction paradigms, pertaining to multi-shaped and flexible displays. In an OUI, the display surface is always the locus of interaction, and may actively or passively change shape upon analog (i.e., as close to non-quantized as possible) inputs. These inputs are provided through direct physical gestures, rather than through indirect point-and-click control. Note that the term 'Organic' in OUI was derived from organic architecture, referring to the adoption of natural form to design a better fit with human ecology. The term also alludes to the use of organic electronics for this purpose. Organic user interfaces were first introduced in a special issue of the Communications of the ACM in 2008. The first International Workshop on Organic User Interfaces took place at CHI 2009 in Boston, Massachusetts. The second workshop took place at TEI 2011 in Madeira, Portugal. The third workshop was held at MobileHCI 2012 in Monterey, California, and the fourth workshop at CHI 2013 in Paris, France. According to Vertegaal and Poupyrev, there are three general types of organic user interface: Flexible (or deformable) user interfaces: When flexible displays are deployed, shape deformation, e.g., through bends, is a key form of input for OUI. Flexible display technologies include flexible OLED (FOLED) and flexible E Ink, or can be simulated through 3D active projection mapping. Shaped user interfaces: Displays with a static non-flat display. The physical shape is chosen so as to better support the main function of the interface. Shapes may include spheres, cylinders or take the form of everyday objects. Actuated (or kinetic) user interfaces: Displays with a programmable shape controlled by a computer algorithm. Here, display shapes can actively adapt to the physical context of the user, the form of the data, or the function of the interface. An extreme example is that of Claytronics: fully physical 3D voxels that dynamically constitute physical 3D images. Holman and Vertegaal present three design principles that underlie OUI: Input equals output: In traditional GUIs, input and output are physically separated: Output is generated graphically on the screen on the basis of input provided by a control device such as a mouse. A key feature of OUI is that the display surface, and its physical deformations are always the locus of user interaction. Function equals form: Coined by Frank Lloyd Wright, this means the shape of an interface determines its physical functionality, and vice versa. Shapes should be chosen such that they best support the functionality of the interface. An example is a spherical multitouch interface, which is particularly suited to geographic information interfaces, which were previously limited to distorted flat projections of spherical earth data.