2,179 research outputs found
Portmerion, Proportion and Perspective
The holiday village of Portmerion was created by Bertram Clough Williams-Ellis (1883 1978) over a period of fifty-one years, starting in 1926. It was grade II listed in 1971.
However, Portmerion has become a part of western popular culture rather than of mainstream architectural history. Its use as the setting for the cult 1967 television series âThe Prisonerâ ensures continued worldwide interest and a constant stream of visitors.
Williams Ellisâ design methods were empirical, initial designs being adjusted by eye on site in close collaboration with trusted builders.
This paper analyses the development of Portmerion as a gesamtkunstwerk; considering the experience of movement through the village as a dynamic composition of shifting vistas, focussing the visitor on a series of constructed views. Through this analysis, Portmerion is revealed as both a manifestation of the architecture of pleasure and an exercise in the pleasure of architecture
Feedup, feedback, and feedforward in curve mid-air 3D gestures
Issuing a mid-air gesture in a three-dimensional space intrinsically suffers for the lack of explicit direct representation of the gesture with which guidance and feedback can be offered. To address this challenge, we decompose the feedback problem into three components: feedup to constantly represent the goal of the gestural task, feedback to respond to what the end user already did related to the initial goal, and feedforward to modify the representation towards the ultimate goal before terminating the gesture production. We exemplify these three components with case studies representing three levels of complexity of Curve Mid-Air 3D Gestures produced in three environments
How sketches work: a cognitive theory for improved system design
Evidence is presented that in the early stages of design or composition the
mental processes used by artists for visual invention require a different type of
support from those used for visualising a nearly complete object. Most research
into machine visualisation has as its goal the production of realistic images which
simulate the light pattern presented to the retina by real objects. In contrast sketch
attributes preserve the results of cognitive processing which can be used
interactively to amplify visual thought. The traditional attributes of sketches
include many types of indeterminacy which may reflect the artist's need to be
"vague".
Drawing on contemporary theories of visual cognition and neuroscience this
study discusses in detail the evidence for the following functions which are better
served by rough sketches than by the very realistic imagery favoured in machine
visualising systems.
1. Sketches are intermediate representational types which facilitate the
mental translation between descriptive and depictive modes of representing visual
thought.
2. Sketch attributes exploit automatic processes of perceptual retrieval and
object recognition to improve the availability of tacit knowledge for visual
invention.
3. Sketches are percept-image hybrids. The incomplete physical attributes
of sketches elicit and stabilise a stream of super-imposed mental images which
amplify inventive thought.
4. By segregating and isolating meaningful components of visual
experience, sketches may assist the user to attend selectively to a limited part of a
visual task, freeing otherwise over-loaded cognitive resources for visual thought.
5. Sequences of sketches and sketching acts support the short term episodic
memory for cognitive actions. This assists creativity, providing voluntary control
over highly practised mental processes which can otherwise become stereotyped.
An attempt is made to unite the five hypothetical functions. Drawing on the
Baddeley and Hitch model of working memory, it is speculated that the five
functions may be related to a limited capacity monitoring mechanism which makes
tacit visual knowledge explicitly available for conscious control and manipulation.
It is suggested that the resources available to the human brain for imagining nonexistent
objects are a cultural adaptation of visual mechanisms which evolved in
early hominids for responding to confusing or incomplete stimuli from immediately
present objects and events. Sketches are cultural inventions which artificially
mimic aspects of such stimuli in order to capture these shared resources for the
different purpose of imagining objects which do not yet exist.
Finally the implications of the theory for the design of improved machine
systems is discussed. The untidy attributes of traditional sketches are revealed to
include cultural inventions which serve subtle cognitive functions. However
traditional media have many short-comings which it should be possible to correct
with new technology. Existing machine systems for sketching tend to imitate nonselectively
the media bound properties of sketches without regard to the functions
they serve. This may prove to be a mistake. It is concluded that new system
designs are needed in which meaningfully structured data and specialised imagery
amplify without interference or replacement the impressive but limited creative
resources of the visual brain
Communicating content: development and evaluation of icons for academic document triage through visualisation and perception
This work seeks to identify key features and characteristics for the design of icons that can support the tasks of information seekers in academic document triage interfaces. Such icons are meant to act as visual links to the specific elements or sections in an academic document. We suggest that icons in triage interfaces are better able to communicate information, provide feedback and enable faster user interactions than text, particularly in mobile-based interfaces. Through investigation of visualisation and perception processes, we are able to propose five primary icon categories, the two most dominant being iconic and symbolic: iconic representations mostly apply to graphically and spatially distinct document elements (i.e. Title, Abstract, Tables and Figures), externalising the elementsâ surface propositions. Symbolic representations are largely associated with elements of greater semantic value (Introduction, Conclusion, Full text and Author), drawing upon the elementsâ deep propositions
The feasibility of using virtual prototyping technologies for product evaluation
With the continuous development in computer and communications technology the use of
computer aided design in design processes is becoming more commonplace. A wide range of
virtual prototyping technologies are currently in development, some of which are commercially
viable for use within a product design process. These virtual prototyping technologies range
from graphics tablets to haptic devices. With the compression of design cycles the feasibility of
using these technologies for product evaluation is becoming an ever more important
consideration.
This thesis begins by presenting the findings of a comprehensive literature review defining
product design with a focus on product evaluation and a discussion of current virtual
prototyping technologies. From the literature review it was clear that user involvement in the
product evaluation process is critical. The literature review was followed by a series of
interconnected studies starting with an investigation into design consultancies' access and
use of prototyping technologies and their evaluation methods. Although design consultancies
are already using photo-realistic renderings, animations and sometimes 3600 view CAD
models for their virtual product evaluations, current virtual prototyping hardware and software
is often unsatisfactory for their needs. Some emergent technologies such as haptic interfaces
are currently not commonly used in industry. This study was followed by an investigation into
users' psychological acceptance and physiological discomfort when using a variety of virtual
prototyping tools for product evaluation compared with using physical prototypes, ranging from
on-screen photo-realistic renderings to 3D 3600 view models developed using a range of
design software. The third study then went on to explore the feasibility of using these virtual
prototyping tools and the effect on product preference when compared to using physical
prototypes. The forth study looked at the designer's requirements for current and future virtual
prototyping tools, design tools and evaluation methods.
In the final chapters of the thesis the relative strengths and weaknesses of these technologies
were re-evaluated and a definitive set of user requirements based on the documentary
evidence of the previous studies was produced. This was followed by the development of a
speculative series of scenarios for the next generation of virtual prototyping technologies
ranging from improvements to existing technologies through to blue sky concepts. These
scenarios were then evaluated by designers and consumers to produce documentary
evidence and recommendations for preferred and suitable combinations of virtual prototyping
technologies. Such hardware and software will require a user interface that is intuitive, simple,
easy to use and suitable for both the designers who create the virtual prototypes and the
consumers who evaluate them
RAMPVIS: Answering the challenges of building visualisation capabilities for large-scale emergency responses
The effort for combating the COVID-19 pandemic around the world has resulted in a huge amount of data, e.g., from testing, contact tracing, modelling, treatment, vaccine trials, and more. In addition to numerous challenges in epidemiology, healthcare, biosciences, and social sciences, there has been an urgent need to develop and provide visualisation and visual analytics (VIS) capacities to support emergency responses under difficult operational conditions. In this paper, we report the experience of a group of VIS volunteers who have been working in a large research and development consortium and providing VIS support to various observational, analytical, model-developmental, and disseminative tasks. In particular, we describe our approaches to the challenges that we have encountered in requirements analysis, data acquisition, visual design, software design, system development, team organisation, and resource planning. By reflecting on our experience, we propose a set of recommendations as the first step towards a methodology for developing and providing rapid VIS capacities to support emergency responses
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