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

PDF papers
References

Hits 1 to 20 of 17701

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

_id	caadria2023_106
id	caadria2023_106
authors	Li, Yuqian and Xu, Weiguo
year	2023
title	Research on Architectural Sketch to Scheme Image Based on Context Encoder
doi	https://doi.org/10.52842/conf.caadria.2023.1.069
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 69–78
summary	Architects are used to hand drawing sketches to express the architectural creation intention. To present these abstract sketches, architects and teams need to convert sketches into architectural scheme images, which requires a lot of time and labour. Deep learning may have the potential to improve the efficiency of this work. The common sketch-to-image generation is based on Generative Adversarial Network (GAN), and the research of edge-to-image has made a big progress. But these methods require strict alignment of data pairs, which is difficult to achieve. Zhu et al. proposed the loss of Cycle-Consistent, which solved the problem that pairs of data sets are difficult to collect. However, most of the image translation methods require strict alignment between image data pairs, which can be achieved only for the edge mapping extracted from the image; but the sketch is very different from the edge. Due to the abstractness and fuzziness of the sketch, any simple distortion cannot complete the task of providing pixel-level alignment between the sketch and image; And image translation is the transfer of image features such as colour and texture. The original image has a strong constraint on the generated image, which makes the original structure of the image impossible to be changed. By image inpainting, we address this topic using a joint image completion approach with Context-Encoder, where the architectural sketch provides the image context for generating the scheme images. This setting has two advantages: first, the joint images can avoid the complexity of cross modal problems and the strict alignment of the data pairs as image-to-image translation; second, because of the weak constraint, the outputs have greater freedom, which perhaps can generate more imaginative results. The Context-Encoder generates scheme images on the data sets of general architectural sketches. The results present that the applicability of the completion method is better than that of the method of image translation. And scheme images that is different from the original architectural sketch contours have been generated.
keywords	Sketch, Building Scheme Image, Image Completion, Context-Encoder
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	ijac20053206
id	ijac20053206
authors	Liakata-Pechlivanidou, Anastasia; Zerefos, Stylianos C.; Zerefos, Stylianos N.
year	2005
title	Perceptual and Cognitive Factors that Influence Orientation in Computer Generated Real Architectural Space
source	International Journal of Architectural Computing vol. 3 - no. 2, 245-254
summary	This study presents results from an experiment that concerns spatial perception and cognition in virtual environments. It also includes the effects of how the development of a simulated virtual space can change perception and cognition of a real building perceived only through architectural drawings and photographs. In the experiment each student was shown external and internal 360° images, representing nodes in virtual space, of the same virtual building. Two different groups of students were formed. The first group was shown photorealistic rendered images, while the other group the same images with non-photorealistic representation. Differences in orientation tendencies of the participating students, as well as statistical results from these experiments were tested and are presented in this paper. It was found that there was a statistically significant tendency of the students towards larger scatter in more luminous virtual space as well as a tendency to visit lit parts of virtual space.
series	journal
more	http://www.multi-science.co.uk/ijac.htm
last changed	2007/03/04 07:08

_id	698a
authors	Liang, You-Dong and Barsky, Brian A.
year	1983
title	An Analysis and Algorithm for Polygon Clipping
source	Communications of the ACM November, 1983. vol. 26: pp. 868-877 : ill. includes bibliography.
summary	(This is one of the two standard algorithms for clipping. The other is the Sutherland-Hodgman reentrant algorithm). The process of polygon clipping is analyzed and the understanding gained thereby forms the foundation of a very direct algorithm. Each edge of the input polygon is considered to be a vector and is then extended to be a line of infinite extent. The boundary line segments of the clip window are extended in a similar fashion to become boundary lines. The intersection points of an extended edge with the boundary lines are identified as entry or exit points. It is observed that these entry and exit points can be used to characterize the visibility status of the edge. Not only might the edge have a visible segment, but it can also induce the inclusion in the output polygon of a vertex at a corner of the clip window called a turning vertex. To quantify the visibility conditions, the edge is written in parametric form. The possible contributions (including nil) that can be provided to the output polygon by a particular edge are established. This analysis is then embedded in an algorithm. An arbitrary example input polygon is given and the output of the algorithm is shown. The execution time for this example using this algorithm is measured to be half of what is required by the standard Sutherland-Hodgman reentrant polygon clipping algorithm
keywords	polygons, clipping, algorithms, computer graphics
series	CADline
last changed	2003/06/02 13:58

_id	05b4
authors	Liang, You-Dong and Barsky, Brian A.
year	1984
title	A New Concept and Method for Line Clipping
source	ACM Transactions on Graphics. January, 1984. vol. 3: pp. 1-22 : ill. includes bibliography
summary	A new concept and method for line clipping is developed that describes clipping in an exact and mathematical form. The basic ideas form the foundation for a family of algorithms for two-dimensional, three-dimensional, and four-dimensional (homogeneous coordinates) line clipping. The line segment to be clipped is mapped into a parametric representation. From this, a set of conditions is derived that describes the interior of the clipping region. Observing that these conditions are all of similar form, they are rewritten such that the solution to the clipping problem is reduced to a simple max/min expression. For each dimension, the mathematics are discussed, an example is given, the algorithm is designed, and a performance test is conducted. The new algorithm is compared with the traditional Sutherland-Cohen clipping algorithm. Using randomly generated data, the new algorithm showed a 36 percent, 40 percent, and 79 percent improvement for two-dimensional, three-dimensional, and four- dimensional clipping, respectively. One of the advantages of this algorithm is the quick rejection of line segments that are invisible. In addition, this algorithm can be easily generalized for clipping against any convex viewing volume
keywords	algorithms, clipping, computer graphics, analysis
series	CADline
last changed	2003/06/02 13:58

_id	ae09
authors	Lieberman, Henry
year	1985
title	There's More to Menu Systems Than Meets the Screen
source	SIGGRAPH '85 Conference Proceedings. July, 1985. vol. 19 ; no. 3: pp. 181-189 : ill. includes bibliography
summary	Love playing with those fancy menu-based graphical user interfaces, but afraid to program one yourself for your own application? Do windows seem opaque to you? Are you scared of Mice? Like what-you-see-is-what-you-get but don't know how to get-what-you-want-to-see on the screen? Everyone agrees using systems like graphical document illustrators, circuit designers, and iconic file systems is fun, but programming user interfaces for these systems isn't as much fun as it should be. Systems like the Lisp Machines, Xerox D- Machines, and Apple Macintosh provide powerful graphics primitives, but the casual applications designer is often stymied by the difficulty of mastering the details of window specification, multiple processes, interpreting mouse input, etc. This paper presents a kit called EZWin, which provides many services common to implementing a wide variety of interfaces, described as generalized editors for sets of graphical objects. An individual application is programmed simply by creating objects to represent the interface itself, each kind of graphical object, and each command. A unique interaction style is established which is insensitive to whether commands are chosen before or after their arguments. The system anticipates the types of arguments needed by commands preventing selection mistakes which are a common source of frustrating errors. Displayed objects are made 'mouse-sensitive' only if selection of the object is appropriate in the current context. The implementation of a graphical interface for a computer network simulation is described to illustrate how EZWin works
keywords	user interface, computer graphics
series	CADline
last changed	1999/02/12 15:09

_id	c937
authors	Liebowitz, D., Criminisi, A. and Zisserman, A.
year	1999
title	Creating architectural models from images
source	EUROGRAPHICS'99
summary	We present methods for creating 3D graphical models of scenes from a limited numbers of images, i.e. one or two, in situations where no scene co-ordinate measurements are available. The methods employ constraints available from geometric relationships that are common in architectural scenes - such as parallelism and orthogonality - together with constraints available from the camera. In particular, by using the circular points of a plane simple, linear algorithms are given for computing plane rectification, plane orientation and camera calibration from a single image. Examples of image based 3D modelling are given for both single images and image pairs.
series	other
last changed	2003/04/23 15:14

_id	13f5
authors	Liggett, R. and Jepson, W.
year	1995
title	An integrated environment for urban simulation
source	Environment and Planning B, 22, pp. 291-305
summary	Contributed by Bharat Dave (b.dave@architecture.unimelb.edu.au)
keywords	3D City modeling
series	other
last changed	2001/06/04 20:23

_id	b76e
authors	Liggett, Robin S.
year	2000
title	Automated facilities layout: past, present and future
source	Automation in Construction 9 (2) (2000) pp. 197-215
summary	This paper reviews the history of automated facility layout, focusing particularly on a set of techniques which optimize a single objective function. Applications of algorithms to a variety of space allocation problems are presented and evaluated. Guidelines for future implementations of commercial systems are suggested.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	ecaade2021_059
id	ecaade2021_059
authors	Lim, Ariel Cheng Sin and Thomsen, Mette Ramsgaard
year	2021
title	Multi-Material Fabrication for Biodegradable Structures - Enabling the printing of porous mycelium composite structures
doi	https://doi.org/10.52842/conf.ecaade.2021.1.085
source	Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 1, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 85-94
summary	Our awareness of the earth's depleting resources has directed focus towards biomaterials, which can be extracted sustainably and biodegraded after use. Current fabrication of biomaterial structures is still restricted in strength and geometry, limiting its use in construction. This paper presents a novel two-phase multi-material fabrication process to create mycelium composite structures of higher porosity and complexity with speculated improvements in strength. First, cellulose pulp inoculated with mycelium is extruded. Then, each layer is filled by a secondary supporting material. This material, in the form of a gravel- and sand-slurry, acts as an inhospitable medium steering mycelial growth, additionally improving aeration to produce stronger structures. After an intermediate growth period, the secondary material, reusable in a closed-loop production model, is removed to reveal the fully-grown mycelium structure. The paper reports on each of the three aspects: the fabrication process, material experimentation of primary and secondary substrates, as well as geometry of varying porosity and performance.
keywords	biomaterials; mycelium; biodegradable structures; robotic fabrication; additive manufacturing
series	eCAADe
email
last changed	2022/06/07 07:59

_id	caadria2023_406
id	caadria2023_406
authors	Lim, Chor-Kheng
year	2023
title	Gesture Modeling – In Between Nature and Control
doi	https://doi.org/10.52842/conf.caadria.2023.1.189
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 189–198
summary	This research develops a robotic arm-controlled wax material fluidity shape/form-making system that combines AI image recognition and remote control capabilities. AI image recognition is used to capture the designer's hand gestures or movements as an intuitive input method for controlling shape forming. It gives the designer active control of the desired model shape through the temperature, rotation, and movement controls in the process of phase change of wax materials. The system has the additional advantage of remote control, allowing designers to create wax models remotely through intuitive gesture-controlled interactions. This advantage will become a new method of the digital co-creation process.
keywords	Form-finding, Gesture Modeling, Wax, Phase Change Material, Robotic-arm Controlled
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	caadria2018_268
id	caadria2018_268
authors	Lim, Joie, Janssen, Patrick and Stouffs, Rudi
year	2018
title	Automated Generation of BIM Models from 2D CAD Drawings
doi	https://doi.org/10.52842/conf.caadria.2018.2.061
source	T. Fukuda, W. Huang, P. Janssen, K. Crolla, S. Alhadidi (eds.), Learning, Adapting and Prototyping - Proceedings of the 23rd CAADRIA Conference - Volume 2, Tsinghua University, Beijing, China, 17-19 May 2018, pp. 61-70
summary	Existing buildings are often lacking BIM models. This paper proposes a method to semi-automate the generation of BIM models from 2D CAD drawings. The method has two parts: the first part, 2D CAD drawing preparation, involves cleaning the drawings to obtain simplified 2D input geometry and the second, 3D BIM model generation, involves generating and extracting parameters to generate 3D BIM components. This research focuses on the semi-automation of the second part. The the model is generated storey by storey, with each building element type being processed. A demonstration was carried out for a case-study building. The main modelling strategies used by the method are described and key challenges are discussed.
keywords	BIM; CAD drawings; conversion; generation; Grasshopper
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	sigradi2021_260
id	sigradi2021_260
authors	Lima Ferreira, Claudio and Vaz Lima, Larissa
year	2021
title	Architecture and Neuroscience: Green Areas Contributions to Hospitalized Patients’ Homeostasis
source	Gomez, P and Braida, F (eds.), Designing Possibilities - Proceedings of the XXV International Conference of the Ibero-American Society of Digital Graphics (SIGraDi 2021), Online, 8 - 12 November 2021, pp. 927–939
summary	Hospitalization is, for the patient, a neuropsychophysiological stressor, thus pertinent theories point to architectural stimuli as a tool for the homeostasis restoration and consequent well-being. Furthermore, they compile advantages to the patients’ treatment and highlight, mainly, the natural environments benefits, which is elucidated by the Biophilia theory. Through literature review and analysis of applied research in national and international hospitals, extracted from indexing databases of scientific production in the 2000-2020 timeframe, it was found that these areas [a] promote stimuli that enhance emotions and positive feelings; [b] act to restore stress and anxiety; [c] reduce pain, analgesic intake and length of stay; and [d] increase patient satisfaction. By sharing the results of this research, the objective is, in addition to stimulating future research on the organism behavior in the environments, to indicate perspectives for hospital ambiences.
keywords	Neurociencias, Arquitetura Hospitalar, Áreas Verdes, Biophilia, Equilíbrio Homeostático.
series	SIGraDi
email
last changed	2022/05/23 12:11

_id	sigradi2007_af80
id	sigradi2007_af80
authors	Lima, Denise; Juliana de Oliveira Taschetto; Felipe Etchegaray Heidrich
year	2007
title	Digital graphical study of simulation of the visual results of the application of regulating norms for the visual communication of commercial building [Estudo gráfico digital de simulação dos resultados visuais da aplicação de normas reguladoras para a comunicação visual de prédios comerciais]
source	SIGraDi 2007 - [Proceedings of the 11th Iberoamerican Congress of Digital Graphics] México D.F. - México 23-25 October 2007, pp. 327-331
summary	Beyond importance of the visual communication in a consumption society and of the necessity of perfect integration of this with the urban landscape, in the Brazil, cities searched to create regulation norms with the objective to organize some types of external visual communication. This study it shows the digital visualization with application of specific norms through the digital graphical resources. The previous visualization is important to test the viability and to foresee the result in the urban landscape. With norms' application, the visual communication of the marks will be more appreciated and the buildings will have their architecture respected.
keywords	Digital graphical; Visual communication; Urban landscape; Regulating norms
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	sigradi2014_189
id	sigradi2014_189
authors	Lima, Fernando Rodrigues; Patricia Estevão dos Santos, Emanuel Filipe de Alarcão Melo de Moraes
year	2014
title	Emprego de Sistema de Informações Geográficas (SIG) na Modelagem e Monitoramento de um Campus Universitário [Geographic Information Systems (GIS) applied to an University Campus modeling and monitoring]
source	SiGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 512-515
summary	This paper presents a research on GIS to organize the available data from infrastructure and facilities in a University campus. It integrates and compiles a range of data under ontology that will permit the enhancement of geographic database regarding monitoring and control systems. The team worked with campus administration using desktop hardware and software to consolidate information about water, sewage, energy and other networks at backbone scale. The boundaries of buildings, parking, streets and land use were also included. The geographic features and tables assigned are intended to work under WebGIS, mobile device, participative platforms, BIM structures and 3D simulation.
keywords	GIS; Digital graphic modeling; Urban engineering; University campus
series	SIGRADI
email
last changed	2016/03/10 09:55

_id	ecaade2016_032
id	ecaade2016_032
authors	Lima, Fernando, Montenegro, Nuno, Beir?o, José Nuno and Kos, Jose
year	2016
title	Computational Approach for the Assessment of Transit Oriented Development Principles - A multivariate optimization method for urban planning
doi	https://doi.org/10.52842/conf.ecaade.2016.2.031
source	Herneoja, Aulikki; Toni Österlund and Piia Markkanen (eds.), Complexity & Simplicity - Proceedings of the 34th eCAADe Conference - Volume 2, University of Oulu, Oulu, Finland, 22-26 August 2016, pp. 31-40
summary	This paper presents a computational approach to provide dynamic assessment and optimization of principles derived from Transit Oriented Development (TOD) - an urban development model that advocates compact, walkable, and mixed-use neighborhoods, centered around transport stations. In spite of being increasingly promoted in several cities of the world, TOD lacks an approach that addresses multivariate data for optimization of its principles. In this paper, we propose a methodology backed by an algorithmic-parametric CAD environment, applied to a neighborhood unit in a case study. The objective is the analysis and improvement of TOD relevant and measurable features (transit accessibility, walkability and diversity) in order to optimize neighborhoods' features. The ultimate goal is to facilitate the management of solutions in TOD planning processes, supported by a principle-index-tool approach triad.
wos	WOS:000402064400002
keywords	Transit Oriented Development; Multi-objective optimization; Computational urban planning;
series	eCAADe
email
last changed	2022/06/07 07:59

_id	sigradi2016_426
id	sigradi2016_426
authors	Lima, Fernando; Kos, Jose Ripper; Montenegro, Nuno
year	2016
title	Otimizaç?o multi-objetivo e Desenvolvimento Orientado pelo Transporte: algoritmos evolutivos em estratégias de planejamento urbano [Multi-objective optimization and Transit Oriented Development: evolutionary algorithms in urban planning strategies]
source	SIGraDi 2016 [Proceedings of the 20th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Argentina, Buenos Aires 9 - 11 November 2016, pp.601-608
summary	This paper presents a computational approach to provide assessment and optimization of principles from Transit Oriented Development (TOD) - an urban development model that advocates compact, walkable, and mixed-use neighborhoods, centered around transport stations. In spite of being increasingly promoted around the world, TOD lacks an approach that addresses multivariate data for optimization of its principles. In this paper, we propose an algorithmic-parametric methodology, applied to a neighborhood unit in a case study. The objective is to demonstrate the potential of algorithmic approaches towards a more dynamic management of the large amount of data involved in DOT implementation methodologies.
keywords	Transit Oriented Development; Multi-objective optimization; Urban planning
series	SIGRADI
email
last changed	2021/03/28 19:58

_id	sigradi2013_238
id	sigradi2013_238
authors	Lima, Fernando; Vinícius Morais; Frederico Braida; Raiane Duque
year	2013
title	Protótipo Virtual a partir da Plataforma BIM: Uma Base Digital de Dados para Estudos Simulativos de Cenários Ambientais e Mapeamento de Infra-estrutura [Virtual Prototype from the BIM platform: A digital Database for Environmental Simulation Studies and Infrastructure Mapping]
source	SIGraDi 2013 [Proceedings of the 17th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Chile - Valparaíso 20 - 22 November 2013, pp. 297 - 301
summary	In this article is presented some results of the studies and data obtained in the undergraduates’ research project linked to the Architecture and Urbanism curse of the Federal University of Juiz de Fora (UFJF), in which a digital evaluative approach of environmental performance of buildings in the campus is pursued. In this paper is reported the unfolding of this research project that aims to develop a virtual prototype in Building Information Modelling platform of a campus construction, and its application in environmental simulation studies as well as the management of the building´s information as-built.
keywords	Virtual Prototype; Building Information Modeling; Simulation Studies
series	SIGRADI
email
last changed	2016/03/10 09:55

_id	sigradi2018_1312
id	sigradi2018_1312
authors	Lima, Fábio
year	2018
title	About (relatively) common operations in digital architectures
source	SIGraDi 2018 [Proceedings of the 22nd Conference of the Iberoamerican Society of Digital Graphics - ISSN: 2318-6968] Brazil, São Carlos 7 - 9 November 2018, pp. 31-36
summary	Many different types of algorithms have been associated to gain complex shapes. They give rise to a large set of unusual forms, through calculations based on computational geometries, self-organizing systems, rule-based systems, and optimization, often still assembled in morphogenesis principles. Many of these discoveries mimic physical, chemical, and even behavioral principles at the edge of this code-translated knowledge. Thus, any new form, the result of this exploratory perspective, can mean some progress. If the understanding of specific algorithmic characteristics has validity (for precise programming), generic concepts are also important for simplifying procedures and presenting general concepts of the result.
keywords	Digital architecture; Computational geometry; Visual expression; Syntax generalities
series	SIGRADI
email
last changed	2021/03/28 19:58

_id	caadria2018_018
id	caadria2018_018
authors	Lin, Yuming and Huang, Weixin
year	2018
title	Social Behavior Analysis in Innovation Incubator Based on Wi-Fi Data - A Case Study on Yan Jing Lane Community
doi	https://doi.org/10.52842/conf.caadria.2018.2.197
source	T. Fukuda, W. Huang, P. Janssen, K. Crolla, S. Alhadidi (eds.), Learning, Adapting and Prototyping - Proceedings of the 23rd CAADRIA Conference - Volume 2, Tsinghua University, Beijing, China, 17-19 May 2018, pp. 197-206
summary	Innovation incubator is an emerging kind of office space which focuses on promoting social interaction in the space. From the perspective of environmental behavior, the complex relationship between a particular space form and the social interactions is well worth exploring. Based on Wi-Fi positioning data, this paper examined the spatial and temporal behavior in innovation incubators. Using the interdisciplinary social networks analysis, this paper further analyzed the social interactions in this space, mining out social structures such as gathering and community, and analyzing the relationship between these structures and spaces. The result shows that human behavior in innovation incubators has some interesting characteristics, and the social structures are closely linked with the functional area of innovation incubator. This paper provides a new perspective and introduces interdisciplinary approaches to study the social behaviors in a particular space form, which has great potential in future research.
keywords	environmental behavior study; social behavior analysis; innovation incubator; Wi-Fi IPS; social network
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	sigradi2015_10.250
id	sigradi2015_10.250
authors	Linardi, Ana Beatriz; Ramos, Fernando da Silva; Garotti, Flavio Valverde; Damiani, Vitor
year	2015
title	3D printing as support for arts education for the visually impaired
source	SIGRADI 2015 [Proceedings of the 19th Conference of the Iberoamerican Society of Digital Graphics - vol. 2 - ISBN: 978-85-8039-133-6] Florianópolis, SC, Brasil 23-27 November 2015, pp. 564-568.
summary	This article discusses some methodologies in art education in schools and educational activities in museums. It focuses on accessibility and in the visually impaired rights to access and improve the experiences and repertoire in artistic languages, recognizing the use of new technologies in the field of digital manufacturing as valuable resources for the production of teaching materials with the use of cheaper and accessible technology, which expands the access to cultural institutions and education. Considering that most of the museums art works are not to be touched, 3D printing reproductions in durable low cost plastic present as an alternative for tactile experience. In addition, the photogrammetric 3D scanning process and digital editing allow for the creation of isolated parts and materials originated from the art piece, broadening the pedagogical possibilities of art educators. The production of didactic material for arts teaching, with the use of 3D printed copies (edited or not) originated from 3D scans, may help revealing a more subtle and sophisticated aspect of artistic narrative to the public and the visually impaired.
keywords	Education, Art, 3D Scan, 3D Printing
series	SIGRADI
email
last changed	2016/03/10 09:55

For more results click below: