Cumincad : CUMINCAD Papers : Search Results

CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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Reformat results as: short short into frame detailed detailed into frame

_id	acadia18_358
id	acadia18_358
authors	Lara Ditzel, Patricio; Balas, Leonard; Kalina, Olga; Vasey, Lauren; Bechert, Simon; Krieg ,Oliver David; Menges, Achim; Knippers, Jan
year	2018
title	Integrative Fabrication of Sandwich Shells. An integrative approach to design of robotically fabricated wood- based sandwich segmented shells
doi	https://doi.org/10.52842/conf.acadia.2018.358
source	ACADIA // 2018: Recalibration. On imprecisionand infidelity. [Proceedings of the 38th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-17729-7] Mexico City, Mexico 18-20 October, 2018, pp. 358-365
summary	This paper presents the development of an integrative and adaptive robotic fabrication process for the production of wooden-based segmented shells of variable thickness. A material and construction process is presented whereby an industrial robot with a two-degree of freedom end-effector acts as active form-work, positioning flexible strips of plywood so they can be assembled into a structurally performative configuration and then filled with a polyurethane expandable foam. The resulting material system is a structurally performative and doubly curved sandwich composite which performs well in bending. This paper discusses the construction process and the material system, methods for structural analysis, an adaptive robotic fabrication process, as well as a computational design tool which integrates material constraints, robotic constraints, and structural performance. The resulting construction system expands the design possibilities for robotic fabrication in wood, particularly as a viable material system for implementation directly in an on-site condition.
keywords	work in progress, fabrication & robotics, materials & adaptive systems
series	ACADIA
type	paper
email
last changed	2022/06/07 07:52

_id	sigradi2011_197
id	sigradi2011_197
authors	Lara, Arthur H.; Giacaglia, Marcelo E.; da Silva Moura, Norberto
year	2011
title	Intervenções Urbanas Paramétricas [Urban Parametric Interventions]
source	SIGraDi 2011 [Proceedings of the 15th Iberoamerican Congress of Digital Graphics] Argentina - Santa Fe 16-18 November 2011, pp. 500-502
summary	Renowned Architecture schools are acting globally by means of international workshops. In these, new methodo- logies of digital parametric representations are applied in urban interventions. We bring forward an inflatable solution for sheltering a sports event, held under a viaduct. In this case, parametric technology was employed in the design, with the use of digital fabrication. Several other interventions were proposed for the same space chosen for the action of a multidisciplinary group of professors. Differently from government actions that usually focus on the removal of social problems this workshop sought a solution through technology, new materials and parametric design.
keywords	Parametric design; urban interventions; metaballs; augmented culture
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	sigradi2009_1107
id	sigradi2009_1107
authors	Lara, Arthur Hunold; Marcelo Eduardo Giacaglia; Norberto Corrêa da Silva Moura
year	2009
title	Teaching digital fabrication in the post-industrial era
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	The creation process of a product is a work of immersion and concentration, and is, seldom linear. A primary concept most likely will undergo modifications during the process. In what concerns teaching, a great number of Brazilian higher education institutions act exclusively on the formation of students as specialists in the creation of primary concepts. As for the process of refining an idea, as in prototype production and observation, this phase will only be learned and understood on the job market. Nowadays, new methodologies for digital fabrication put into evidence other strategies resulting from post-industrial production.
keywords	Digital fabrication; digital modeling; prototyping; education
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	407caadria2004
id	407caadria2004
authors	Larry Sass
year	2004
title	Rapid Prototyping Techniques for Building Program Study
doi	https://doi.org/10.52842/conf.caadria.2004.655
source	CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 655-670
summary	This paper is original research that demonstrates new design possibilities for evaluation in the schematic phase of design through the use rapid prototyping as a tool of representation verses 2D drawing. These program shapes are created from CAD files using a threedimensional printing and laser cutting CAM tools. This way of working is in response to two dimensional plan representation and evaluation (Mitchell 1976). This research combines the best of the visual aspects of plan representation and the formal representation of solid block modeling. The models in this paper demonstrate the building’s physical scale of spaces, building use and overall form. Resulting models will demonstrate a new way of designing in CAD one that combined physical and visual ways or representation.
series	CAADRIA
email
last changed	2022/06/07 07:52

_id	ijac20086402
id	ijac20086402
authors	Larsen, Knut Einar; Schindler, Christoph
year	2008
title	From Concept to Reality: Digital Systems in Architectural Design and Fabrication
source	International Journal of Architectural Computing vol. 6 - no. 4, 397-413
summary	One of the challenges for today's architectural designers is the establishment of continuous digital processes between design and fabrication. To achieve this, designers need to acquire knowledge about the production and the methods and tools involved. Two case studies organized at the Norwegian University of Science and Technology (NTNU) on digital timber fabrication investigate the new field of collaboration between architectural designers and fabricators. The studies demonstrate the design potential of acquiring insights into the fabricators' software and digital production machinery and reflect contemporary fabrication technology in formal expression. We identified two different approaches to formal exploration that we defined as "sophistication of the detail" and "variation of the element".
series	journal
last changed	2009/03/03 07:48

_id	acadia12_209
id	acadia12_209
authors	Larsen, Niels Martin ; Pedersen, Ole Egholm ; Pigram, Dave
year	2012
title	A Method for the Realization of Complex Concrete Gridshell Structures in Pre-Cast Concrete
doi	https://doi.org/10.52842/conf.acadia.2012.209
source	ACADIA 12: Synthetic Digital Ecologies [Proceedings of the 32nd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-62407-267-3] San Francisco 18-21 October, 2012), pp. 209-216
summary	This paper describes a method for the design and fabrication of complex funicular structures fromdiscrete precast concrete elements. The research proposes that through the integration of digitalform-finding techniques, computational file-to-fabrication workflows, and innovative sustainableconcrete casting techniques, complex funicular structures can be constructed using prefabricatedelements in a practical, affordable, and materially efficient manner.A recent case study is examined, in which the methodology has been used to construct a pavilion.Custom-written dynamic relaxation software was used to define the overall form and successivealgorithms; it then defined each component’s unique geometry, unrolled into flat shapes, andnested all parts into cut-files. PETG plastic sheets were two-dimensionally laser cut and folded toproduce the unique casting molds. The case study was carried out in collaboration between theAarhus School of Architecture and the University of Technology, Sydney (UTS). Basic research incasting techniques defined the framework for the design process, and a custom-written dynamicrelaxation software application became the primary form-generating tool in the design process ofa constructed pavilion. Fabrication and construction constraints were embedded within the designof both the overall structure and its components. Finite element analysis [FEA] was completed inorder to verify the form-finding results, to ensure structural stability, and to direct adjustments ofthe structure during the design process.The constructed pavilion case study, constructed in a very short time, for low cost and with relativelyunskilled labor, demonstrates that the integration of algorithmic form-finding techniques, CNCfabrication workflows, and the use of innovative PETG folded-mold techniques enables thepractical realization of freeform funicular structures in precast concrete.
keywords	Gridshells , pre-cast concrete , folded moulds , dynamic relaxation , file-to-factory , form-finding , parametric modeling , computational design , zero-waste production
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:52

_id	caadria2020_149
id	caadria2020_149
authors	Larsen, Niels Martin, Aagaard, Anders Kruse and Kieffer, Lynn Hyun
year	2020
title	Digital Workflows for Natural Wood in Constructions
doi	https://doi.org/10.52842/conf.caadria.2020.1.125
source	D. Holzer, W. Nakapan, A. Globa, I. Koh (eds.), RE: Anthropocene, Design in the Age of Humans - Proceedings of the 25th CAADRIA Conference - Volume 1, Chulalongkorn University, Bangkok, Thailand, 5-6 August 2020, pp. 125-134
summary	This research challenges current linear processing methods for standardised timber. The current industry does not leave room for irregular shapes of naturally grown wood. This paper describes a bespoke design and fabrication method that leverages these natural irregularities of the wood. The customised development of a digital tool allows the distribution of the non-standard material to form a structure and the associated robotic machining processes of the individual logs. This research seeks to motivate a more inclusive, diverse and sensitive culture of processing and building with wood while exploring the unique aesthetic qualities of non-standardised wood.
keywords	robotic fabrication; digital workflows; wood processing
series	CAADRIA
email
last changed	2022/06/07 07:52

_id	acadia19_500
id	acadia19_500
authors	Larsen, Niels Martin; Anders Kruse Aagaard
year	2019
title	Exploring Natural Wood
doi	https://doi.org/10.52842/conf.acadia.2019.500
source	ACADIA 19:UBIQUITY AND AUTONOMY [Proceedings of the 39th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-578-59179-7] (The University of Texas at Austin School of Architecture, Austin, Texas 21-26 October, 2019) pp. 500-509
summary	By investigating methods for using computation and digital manufacturing technologies to integrate material properties with architectural design tools, the research in this paper aims at revealing new potentials for the use of wood in architecture. Through an explorative approach, material particularities and fabrication methods are explored and combined into new workflows and architectural expressions. The research looks into different properties and capacities of wood, but the main part of the experimentation revolves around crooked oak logs. Due to their irregularities, these logs are normally discarded. However, through the methods suggested in this research, they are instead matched with unique processing informed by their divergence. The research presents a workflow for handling the discrete shapes of sawlogs in a system that both involve the collecting of material, scanning/digitization, handling of a stockpile, computer analysis, design, and robotic manufacturing. The workflow includes multiple custom-made solutions for handling the complex and different shapes and data of wood logs in a highly digitized machining and fabrication environment. The suggested method is established through investigations of wood as a natural material, studies of the production lines in the current wood industry, and experimentation in our in-house laboratory facilities. This up-cycling of discarded wood supply establishes a non-standard workflow that utilizes non-standard material stock and leads to a critical articulation of today’s linear material economy. The research thereby gives an example of how the natural forms and properties of sawlogs can be directly used to generate new structures and spatial conditions.
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:52

_id	3220
authors	Lartigue, C. Thiebaut, F. and Maekawa, T.
year	2001
title	CNC tool path in terms of B-spline curves
source	Computer-Aided Design, Vol. 33 (4) (2001) pp. 307-319
summary	We present an accurate and efficient method to generate a CNC tool path for a smooth free-form surface in terms of planar cubic B-spline curves which will be fed into afree-form curve interpolator. We assume the use of a three-axis CNC machine tool with a ball end-mill cutter. We first interpolate break points, which are generated bycomputing the offset surface-driving plane intersection curve reflecting the curvature, by a planar cubic B-spline curve. We then evaluate the maximum scallop height alonga scallop curve by computing the stationary points of the distance function between the scallop curve and the design surface. Furthermore, we compute the maximum pickfeed such that the maximum scallop height along a scallop curve coincides with the prescribed tolerance. Illustrative examples show the substantial improvements this methodachieves over conventional methods where the tool path consists of linear or circular paths.
keywords	Free-Form Curve Interpolator, CNC Machine Tool, Pick Feed, Scallop Height, Tool Path, Offset Surface
series	journal paper
email
last changed	2003/05/15 21:33

_id	854e
id	854e
authors	Laskari A, Hanna S, Derix C
year	2008
title	Urban Identity Through Quantifiable Spatial Attributes: Coherence and dispersion of local identity through the automated comparative analysis of building block plans
source	Design Computation Cognition conference 2008
summary	This analysis investigates whether and to what degree quantifiable spatial attributes, as expressed in plan representations, can capture elements related to the experience of spatial identity. By combining different methods of shape and spatial analysis it attempts to quantify spatial attributes, predominantly derived from plans, in order to illustrate patterns of interrelations between spaces through an objective automated process. The study focuses on the scale of the urban block as the basic modular unit for the formation of urban configurations and the issue of spatial identity is perceived through consistency and differentiation within and amongst urban neighbourhoods.
keywords	urban design, spatial analysis, clustering
series	other
type	normal paper
email
more	http://www.springer.com/computer/information+systems+and+applications/book/978-1-4020-8727-1
last changed	2012/09/17 21:30

_id	ecaade2010_210
id	ecaade2010_210
authors	Lassance, Guilherme; Klouche, Djamel; Izaga, Fabiana; Duarte, Gabriel
year	2010
title	Contemporary Metropolitan Conditions: New challenges for design education
doi	https://doi.org/10.52842/conf.ecaade.2010.157
source	FUTURE CITIES [28th eCAADe Conference Proceedings / ISBN 978-0-9541183-9-6] ETH Zurich (Switzerland) 15-18 September 2010, pp.157-166
summary	This paper aims to address design education issues, with a focus on the way the contemporary metropolis is conceived. We understand the reality of the contemporary metropolis as an amalgam of specific issues that transcend local and regional contexts, converging into the categories of the so-called ‘global cities’. These new urban realities derive from territories originally controlled by other logics, and are now in new stages of post-industrial development. Thus, we notice the presence of large peripheral areas where existing industrial activities initially took place, which were later transformed and migrated, leaving behind urban fragments that are taken over by informal activities. Such sites are often crossed, when not ‘on-winged’, by transport infrastructure, increasingly essential to the growing intensity of metropolitan flows. Working with this new reality clearly means first and foremost to reexamine the tools and traditional methods of design and representation of the architect and urban planner.
wos	WOS:000340629400017
keywords	Design process; Design education; Contemporary metropolis
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ecaade2011_086
id	ecaade2011_086
authors	Lassance, Guilherme; Libert, Cédric; Lassance, Patricia Figueira; Feghali, Maria Elisa
year	2011
title	The sensitive tower: Architectural and urban design education faced with fragile metropolitan ecologies
doi	https://doi.org/10.52842/conf.ecaade.2011.581
source	RESPECTING FRAGILE PLACES [29th eCAADe Conference Proceedings / ISBN 978-9-4912070-1-3], University of Ljubljana, Faculty of Architecture (Slovenia) 21-24 September 2011, pp.581-588
summary	Neighborhoods that are still outside the market target can find alternative ways of re-development. Therefore, it is necessary to design architectures compatible with their fragile ecologies. This research benefits from a previous study where we tried to observe the evolution of the uses of buildings and ways of living faced with changes in environmental conditions in a given urban context. Increased automobile traffic has led to changes in the use of residential spaces whose function was gradually replaced by commercial activities. Making use of graphic-oriented interpretation of urban ambiance and landscape analysis methodology applied to the design of different floor levels, this paper aims to introduce the concept of sensitive tower defined on the basis of observations made in our post-occupancy survey as a teaching strategy for the design studio faced with the current challenges of the contemporary metropolis.
wos	WOS:000335665500067
keywords	Design process; design education; contemporary metropolis; urban environment
series	eCAADe
email
last changed	2022/05/01 23:21

_id	ad42
authors	Lasser, Dieter
year	1986
title	Intersection of parametric Surfaces in the Bernstein-Bexier Representation
source	Computer Aided Design May, 1986. vol. 18: pp. 188-192 : ill. includes bibliography.
summary	A user-friendly 'divide-and-conquer' algorithm, which finishes quickly, is presented for finding all the intersection curves between two parametric surfaces in the Bernstein-Bezier representation. The underlying idea of the algorithm is to deal with the Bezier net instead of the surface description itself. By alternately subdividing the Bezier nets, and estimating the intersection area, a finite element mesh is created in the intersection region of the surfaces. The intersection is approximated by polygons computed by plane-plane-intersections using planes defined by Bezier points of the refined Bezier nets. Contour lines can also be produced by the algorithm
keywords	divide-and-conquer, CAD, algorithms, parametrization, curved surfaces, Bezier, curves, intersection
series	CADline
last changed	1999/02/12 15:09

_id	caadria2016_219
id	caadria2016_219
authors	Latifi, Mehrnoush; Daniel Prohasky, Jane Burry, Rafael Moya, Jesse Mccarty and Simon Watkins
year	2016
title	Breathing skins for wind modulation through morphology
doi	https://doi.org/10.52842/conf.caadria.2016.219
source	Living Systems and Micro-Utopias: Towards Continuous Designing, Proceedings of the 21st International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2016) / Melbourne 30 March–2 April 2016, pp. 219-228
summary	This study aims to investigate the design power to manipu- late the behaviour and characteristics of air through geometrical ma- nipulation of building skins. The simple cubic cells in the global sys- tem of a porous screen were manipulated to investigate the impacts of screen’s morphology on the air movement pattern within and around it. The results we discovered from the evaluation of several screen systems revealed trends in response to the careful manipulation of ef- fective shape parameters within a designed matrix of variations as a Matrix of Possible Effective Typologies (MPET). In this research, the main principles of framing the initial matrix were based on: a) Creat- ing pressure differences across the screens as a result of surface intru- sion and extrusion compositions. b) Changing the nature of the airflow (velocity and turbulence variation) with geometrical manipulations of the inlet and outlet of the screens’ components. Experimental and nu- merical studies were undertaken in parallel including the use of a wind tunnel with very smooth flow with precision wind sensors and the numerical studies by Computational Fluid Dynamics. The aim of this paper is to present part of the empirical investigations to demonstrate the power of geometry in shaping the air patterns, altering pressure and velocity through geometrical modification of porous surfaces for future applications.
keywords	Porous screens; microturbulance; facade component; microclimate; parametric CFD
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	60c9
authors	Laurel, B.
year	1993
title	Computer as Theatre
source	Addison-Wesley Publishing Company
summary	I used Aristotelian poetics as a way to look at how plays in particular are made and constructed and to figure out what their parts are and how they work together. So some of the ways, in which there is a relationship, is the idea of action as being the primary element of a play. Often in the old days in particular working with the computer we did not think of the user taking action or getting something done. We thought of the computer presenting information. In the early days it felt much more like television. The idea of taking action and make choices is a very important one in understanding the deepest potential of interactivity. That said I could have based that book on a dramatic theory of Bertolt Brecht for example. There are other consistent, systematic theories of drama you could use to model and interact the system. The only reason I checked Aristotelian poetics is because it seemed so fundamental to me.
series	other
last changed	2003/04/23 15:14

_id	aea2
authors	Laurel, B. (ed.)
year	1990
title	The Art of Human-Computer Interface Design
source	New York: Addison-Wesley.
summary	Human-computer interface design is a new discipline. So new in fact, that Alan Kay of Apple Computer quipped that people "are not sure whether they should order it by the yard or the ton"! Irrespective of the measure, interface design is gradually emerging as a much-needed and timely approach to reducing the awkwardness and inconveniences of human-computer interaction. "Increased cognitive load", "bewildered and tired users" - these are the byproducts of the "plethora of options and the interface conventions" faced by computer users. Originally, computers were "designed by engineers, for engineers". Little or no attention was, or needed to be, paid to the interface. However, the pervasive use of the personal computer and the increasing number and variety of applications and programs has given rise to a need to focus on the "cognitive locus of human-computer interaction" i.e. the interface. What is the interface? Laurel defines the interface as a "contact surface" that "reflects the physical properties of the interactors, the functions to be performed, and the balance of power and control." (p.xiii) Incorporated into her definition are the "cognitive and emotional aspects of the user's experience". In a very basic sense, the interface is "the place where contact between two entities occurs." (p.xii) Doorknobs, steering wheels, spacesuits-these are all interfaces. The greater the difference between the two entities, the greater the need for a well-designed interface. In this case, the two very different entities are computers and humans. Human-conputer interface design looks at how we can lessen the effects of these differences. This means, for Laurel, empowering users by providing them with ease of use. "How can we think about it so that the interfaces we design will empower users?" "What does the user want to do?" These are the questions Laurel believes must be asked by designers. These are the questions addressed directly and indirectly by the approximately 50 contributors to The Art of Human-Computer Interface Design. In spite of the large number of contributors to the book and the wide range of fields with which they are associated, there is a broad consensus on how interfaces can be designed for empowerment and ease of use. User testing, user contexts, user tasks, user needs, user control: these terms appear throughout the book and suggest ways in which design might focus less on the technology and more on the user. With this perspective in mind, contributor D. Norman argues that computer interfaces should be designed so that the user interacts more with the task and less with the machine. Such interfaces "blend with the task", and "make tools invisible" so that "the technology is subervient to that goal". Sellen and Nicol insist on the need for interfaces that are 'simple', 'self-explanatory', 'adaptive' and 'supportive'. Contributors Vertelney and Grudin are interested in interfaces that support the contexts in which many users work. They consider ways in which group-oriented tasks and collaborative efforts can be supported and aided by the particular design of the interface. Mountford equates ease of use with understating the interface: "The art and science of interface design depends largely on making the transaction with the computer as transparent as possible in order to minimize the burden on the user".(p.248) Mountford also believes in "making computers more powerful extensions of our natural capabilities and goals" by offering the user a "richer sensory environment". One way this can be achieved according to Saloman is through creative use of colour. Saloman notes that colour can not only impart information but that it can be a useful mnemonic device to create associations. A richer sensory environment can also be achieved through use of sound, natural speech recognition, graphics, gesture input devices, animation, video, optical media and through what Blake refers to as "hybrid systems". These systems include additional interface features to control components such as optical disks, videotape, speech digitizers and a range of devices that support "whole user tasks". Rich sensory environments are often characteristic of game interfaces which rely heavily on sound and graphics. Crawford believes we have a lot to learn from the design of games and that they incorporate "sound concepts of user interface design". He argues that "games operate in a more demanding user-interface universe than other applications" since they must be both "fun" and "functional".
series	other
last changed	2003/04/23 15:14

_id	2c6d
authors	Laurillard, D.
year	1993
title	Rethinking University Teaching; A Framework for the Effective use of Educational Technology
source	Routledge, London.
summary	This book presents a clearly and soundly argued case for the integration of educational technology into university teaching where the primary focus is to enhance student learning. Different teaching media, including audio-visual, hypermedia, interactive, adaptive and discursive media are discussed in the light of research into student learning. Practical guidelines for designing educational technology are provided.
series	other
last changed	2003/04/23 15:14

_id	sigradi2008_087
id	sigradi2008_087
authors	Lautenschlaeger, Graziele; Anja Pratschke
year	2008
title	Electronic Art and Second Order Cybernetic: From Art in Process to Process in Art.
source	SIGraDi 2008 - [Proceedings of the 12th Iberoamerican Congress of Digital Graphics] La Habana - Cuba 1-5 December 2008
summary	The goal of the paper presented below is to discuss partial results of a research which has been financed by the state sponsored agency FAPESP since 2007. Inserted in the research line Design Process, it aims to analyse connections between design process in electronic art and architecture, concerning the creation of mixed media spatialities, as well as present how each field can get the benefits from this analyses. Based on Grounded Theory methodology, a method of qualitative research which aims to understand “reality” from the meanings attributed by people for their experiences, the research has been started collecting data from bibliographical references, interviews with media artists, theoreticians and curators of electronic art and visits to media labs. Interviews and visits of media centers were taken in Europe while the researcher was as an exchange student in the Interface Culture Department in Kunstuniversität Linz, from March to September of 2008. By crossing data collected from the interviews and visits, with the cybernetic social system theory by Niklas Luhmann, and the discussion of an example of mixed media spatiality creation in the art field, this paper analyses how creative processes in digital era depends on different interdisciplinary relationships and how collaborative approaches are needed nowadays in the arts and architectural areas, seeing that artworks are always being influenced by their respective specific “mediality”. The aim of this paper is to discuss the relevance of the use of the cybernetic theory in digital culture, when concepts like participation, interaction and communication are some of the keywords, towards a “collective and distributed authorship”, and their reflects in the contemporary spatiality. The special interest in the comparison of art experience and second order cybernetics as a reference to architecture field is one of the findings of the paper. And, concerning the practical implication, due to cybernetics’ constant questioning of viability, adaptability and recursion, it should be able to point some ways to architects and artists´ works, especially if we consider that they never work in “ideal” conditions.
keywords	Electronic art. Design process. Second order Cybernetic. Niklas Luhmann.
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	sigradi2009_1022
id	sigradi2009_1022
authors	Lautenschlaeger, Graziele; Anja Pratschke
year	2009
title	Arte Programmata: entre o Acidente e a Programação [Art Programmata: Between the Accident and Programming]
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	The aim of this paper is the discussion of aspects like accident and programming in the creative process in Media Art As a transdisciplinary and collaborative activity, it could be seen as a possibility for knowledge construction and sharing spaces. It also shows how media art practice can be used as a reference for the creative process in the architectural field. Building knowledge spaces through creative processes is a challenge based on the latest reconfiguration of the relations among artists, artworks and observers, which were enhanced after digital technology. Designing knowledge space as collaborative process, we assume that our examination contribute to any field by stimulating the transitions from analog to digital culture.
keywords	Media Art; Architecture; creative process; accident and programming; knowledge spaces
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	4604
authors	Laveau, S. and Faugeras, O.
year	1994
title	3D Scene Representation as a Collection of Images and Fundamental Matrices
source	INRIA Report
summary	The problem we solve in this paper is the following. Suppose we are given N views of a static scene obtained from different viewpoints, perhaps with different cameras. These viewpoints we call reference viewpoints since they are all we know of the scene. We would like to decide if it is possible to predict ano- ther view of the scene taken by a camera from a viewpoint which is arbitrary and a priori di erent from all the reference viewpoints. One method for doing this would be to use these viewpoints to construct a three-dimensional repre- sentation of the scene and reproject this representation on the retinal plane of the virtual camera. In order to achieve this goal, we would have to establish some sort of calibration of our system of cameras, fuse the three-dimensional representations obtained from, say, pairs of cameras thereby obtaining a set of 3-D points, the scene. We would then have to approximate this set of points by surfaces, a segmentation problem which is still mostly unsolved, and then intersect the optical rays from the virtual camera with these sur- faces. This is the most straightforward way of going from a set of images to a new image using the current computer vision paradigm of rst building a three-dimensional representation of the environment from which the rest is derived. We do not claim that there does not exist any simpler way of using the three-dimensional representation than the one we just sketched, but this is just simply not our point. Our point is that it is possible to avoid entirely the explicit three-dimensional reconstruction process: the scene is represented by its images and by some ba- sically linear relations that govern the way points can be put in correspondence between views when they are the images of the same scene-point. These images and their algebraic relations are all we need for predicting a new image. This approach is similar in spirit to the one that has been used in trinocular stereo. Hypotheses of correspondences between two of the images are used to predict features in the third. These predictions can then be checked to validate or inva- lidate the initial correspondence. This approach has proved to be quite e cient and accurate. Related to these ideas are those develo- ped in the photogrammetric community under the name of transfer methods which nd for one or more image points in a given image set, the corresponding points in some new image set.
series	report
last changed	2003/04/23 15:50

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