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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_id	8e4d
authors	Hartley, P.J. and Judd, C.J.
year	1979
title	Curve and Surface Representations for Bezier B-spline Systems
source	1979? pp. 226- 236 : ill. includes bibliography
summary	The Bezier approach to the computer-aided design of surfaces, using interactive design of curves to construct surface sections, can be implemented using spline curves just as well as the original polynomial curves, and with some advantages. In the paper, some problems are considered that arise when a Bezier system is formulated and describe possible solutions for a spline-based system
keywords	curves, representation, CAD, curved surfaces, B-splines, Bezier,
series	CADline
last changed	2003/06/02 13:58

_id	ddss9825
id	ddss9825
authors	Hartog, J. P. den, Koutamanis, A. and Luscuere, P. G.
year	1998
title	Simulation and evaluation of environmental aspects throughout the designprocess
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	The evaluation of environmental aspects in architectural design has traditionally been performed by means of simple (and often simplistic) rule systems. These generally remain at the normative level of minimal control one encounters in building rules and regulations, thereby failing to provide sufficient information and clarity for design guidance. Despite this, evaluation results normally bound subsequent design decisions as fundamental, inflexible constraints. At much later design stages, whenarchitectural form has been largely crystallized and when environmental subsystems must be specified in detail, both the architect and the contributing engineers often realize the severe limitation of theinitial choices. A frequently voiced argument for such simplification in the guise of abstraction is the lack of detailed information on the form and functional content of a building in the early stages of the designprocess. This obviously presupposes a tabula rasa generative approach. The application of a priori knowledge in the form of types, cases, precedents and automated recognition permits direct transaction from the abstract to the specific at and between a number of predefined relevant abstraction levels in the representation. The combination of a priori knowledge at the typological level with multilevel representations permits the use of precise simulation techniques already in the early design stages and throughout thedesign process. The simulation results employ the dual representation principle of scientific visualization, thereby linking form with measurable performance. Feedback from the simulation provides the analysis and evaluation means for design guidance and for communication between thearchitect and the contributing engineers. A prerequisite to this is that the abstraction level in the representation constrains the analysis derived from the simulation, e.g., by means of grades of fuzziness applied to different zones in the representation on the basis of information specificity.
series	DDSS
last changed	2003/08/07 16:36

_id	0fbd
authors	Hartog, J.P., Koutamanis, A. and Luscuere, P.G.
year	1998
title	Simulation and evaluation of environmental aspects throughout the design process
source	4th Design and Decision Support Systems in Architecture and Urban Planning Conference. Eindhoven
summary	The evaluation of environmental aspects in architectural design has traditionally been performed by means of simple (and often simplistic) rule systems. These generally remain at the normative level of minimal control one encounters in building rules and regulations, thereby failing to provide sufficient information and clarity for design guidance. Despite this, evaluation results normally bound subsequent design decisions as fundamental, inflexible constraints. At much later design stages, when architectural form has been largely crystallized and when environmental subsystems must be specified in detail, both the architect and the contributing engineers often realize the severe limitation of the initial choices. A frequently voiced argument for such simplification in the guise of abstraction is the lack of detailed information on the form and functional content of a building in the early stages of the design process. This obviously presupposes a tabula rasa generative approach. The application of a priori knowledge in the form of types, cases, precedents and automated recognition permits direct transaction from the abstract to the specific at and between a number of predefined relevant abstraction levels in the representation. The combination of a priori knowledge at the typological level with multilevel representations permits the use of precise simulation techniques already in the early design stages and throughout the design process. The simulation results employ the dual representation principle of scientific visualization, thereby linking form with measurable performance. Feedback from the simulation provides the analysis and evaluation means for design guidance and for communication between the architect and the contributing engineers. A prerequisite to this is that the abstraction level in the representation constrains the analysis derived from the simulation, e.g., by means of grades of fuzziness applied to different zones in the representation on the basis of information specificity.
series	other
email
last changed	2003/04/23 15:50

_id	acadia06_518
id	acadia06_518
authors	Hasegawa, Toru
year	2006
title	The hexEnvelope system: a cross-platform embedding of material and software logic into descriptive geometry
doi	https://doi.org/10.52842/conf.acadia.2006.518
source	Synthetic Landscapes [Proceedings of the 25th Annual Conference of the Association for Computer-Aided Design in Architecture] pp. 518-529
summary	This paper follows the technical problematic of the hexEnvelope, a novel system for building complex geometric objects. Operating as a scripted system of parametric operations, and running through multiple 2D, 3D, and fabrication software packages, the hexEnvelope system allows for a highly tectonic assemblage of cellular units. Specific issues addressed within the system include the realization of curved surfaces through flat material, the embedding of fabrication logic and material performance within descriptive geometry, and multiple scales of deployment in terms of their tectonic and material consequence.
series	ACADIA
email
last changed	2022/06/07 07:49

_id	2156
authors	Hashimshony, Rivka, Roth, J. and Wachman, A.
year	1986
title	A Model for Generating Floor-Plans in Multi-Story Buildings
source	International Journal of Design Computing. April, 1986. vol. 1: pp. 136-157 : ill. includes bibliography
summary	A graph-theoretic method for computer generation of rectangular floor plans for multi-story buildings is outlined. The problem formulation takes account of adjacency requirements of rooms, dimensional constraints, and the need for vertical alignments of elements such as stairs and elevators. The solution method is to first turn the required adjacencies graph into a layout graph by adding edges, then color and direct the layout graph, cut the colored directed graph into two subgraphs, and finally use the PERT technique to dimension the plan. An example problem of design of a medical clinic is formulated and solved using this method
keywords	space allocation, architecture, CAD, floor plans, synthesis, graphs, dimensioning
series	CADline
last changed	2003/06/02 10:24

_id	ce4a
authors	Hashimshony, Rivka, Shaviv , Edna and Wachman, A.
year	1978
title	A Decomposition Model as a Tool for Evaluation of Multi-Cell Solutions : A Case Study
source	pp. 470-481 : ill. Haifa, Israel: Technion Research and Development Foundation Ltd., March 1978. no. 021-223. includes bibliography
summary	A decomposition-recomposition model that was recently developed by the authors, is applied as a tool for evaluating the layout of an actual design problem composed of 130 activities. The evaluation is performed by comparing the suggested design solution, in terms of space allocation, with a theoretical solution obtained through the model which is set up as a norm for the evaluation
keywords	architecture, evaluation, floor plans, decomposition, space allocation, synthesis
series	CADline
email
last changed	2003/06/02 13:58

_id	ecaade2024_201
id	ecaade2024_201
authors	Hashizume, Keiji; Fukuda, Tomohiro; Yabuki, Nobuyoshi
year	2024
title	A Surface Modeling Method for Indoor Spaces from 3D Point Cloud Reconstructed by 3D Gaussian Splatting
doi	https://doi.org/10.52842/conf.ecaade.2024.1.695
source	Kontovourkis, O, Phocas, MC and Wurzer, G (eds.), Data-Driven Intelligence - Proceedings of the 42nd Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2024), Nicosia, 11-13 September 2024, Volume 1, pp. 695–704
summary	Building information modeling (BIM) is becoming increasingly important in architectural projects, and the implementation of BIM in new construction projects is progressing. On the other hand, many existing buildings do not have BIM data, so it is necessary to create it from scratch. A common method for converting existing buildings to BIM is scan-to-BIM, using techniques such as laser scanning or photogrammetry. However, laser scanning provides accurate point cloud data but requires expensive equipment, while photogrammetry is generally cost-effective but has lower accuracy point cloud data. Another approach for creating BIM from 2D images is to use neural radiance fields (NeRF). However, NeRF faces challenges in terms of data accuracy and processing speed when dealing with large or complex scenes. In contrast, 3D Gaussian Splatting is an emerging computer vision technology that uses machine learning to reconstruct 3D scenes from 2D images faster than NeRF, with comparable or better quality. Therefore, this study proposes a method to create surface models consisting of floors, walls, and ceilings as a preliminary step to creating BIM data for existing indoor spaces using 3D Gaussian Splatting. First, point cloud is generated using 3D Gaussian Splatting, followed by noise reduction. The point cloud is then classified based on height. Subsequently, processing such as extraction of boundary primitives from the point cloud of the floor and classification of feature points are performed to estimate the shape of the floor. Finally, ceilings and walls are created based on height and floor shape. The results of validation confirm an error of between 0.01m and 0.5m in the generated surface models. This study proposes a novel attempt to create 3D models using 3D Gaussian Splatting, contributing to the generation of BIM data for existing buildings.
keywords	Point Cloud, 3D Gaussian Splatting, Scan2BIM, Surface Modeling, Indoor 3D Reconstruction
series	eCAADe
email
last changed	2024/11/17 22:05

_id	ascaad2023_016
id	ascaad2023_016
authors	Hassab, Ahmed; El-Araby, Mohamed; Salman, Amany; Amin, Mostafa; Keraa, Dalia; Madbully, Mohamed; Ali, Mariam; Abdelfatah, Marah; Mahmoud, Abeir
year	2023
title	Digital Design in Africa: A Statistical Overview of Trend and Motivation in the African Continent
source	C+++: Computation, Culture, and Context – Proceedings of the 11th International Conference of the Arab Society for Computation in Architecture, Art and Design (ASCAAD), University of Petra, Amman, Jordan [Hybrid Conference] 7-9 November 2023, pp. 600-621.
summary	The Architecture, Engineering, and Construction (A.E.C.) industry has recently witnessed various innovations, notably integrating Digital Design (D.D.) processes in the industry's workflow. Unfortunately, Africa has been excluded from exploring this development due to its perception as a developing region still reliant on traditional construction methods. This review aims to investigate the trend of Digital Construction (D.C.) in Africa by categorizing several projects based on several data points, including project period, typology, scale, curvature type, and location. A statistical overview of the data will provide a quantitative understanding of D.C. projects in the continent. Furthermore, the study will conduct a literature-based comparative analysis between D.C. projects in Africa. Finally, the review will focus on a select few case studies for in-depth analysis. The expected outcome of this analysis is a comprehensive understanding of the trend and motivation behind D.C. in Africa.
series	ASCAAD
email
last changed	2024/02/13 14:34

_id	ecaade2017_037
id	ecaade2017_037
authors	Hassan Khalil, Mohamed
year	2017
title	Learning by Merging 3D Modeling for CAAD with the Interactive Applications - Bearing walls, Vaults, Domes as Case study
doi	https://doi.org/10.52842/conf.ecaade.2017.1.353
source	Fioravanti, A, Cursi, S, Elahmar, S, Gargaro, S, Loffreda, G, Novembri, G, Trento, A (eds.), ShoCK! - Sharing Computational Knowledge! - Proceedings of the 35th eCAADe Conference - Volume 1, Sapienza University of Rome, Rome, Italy, 20-22 September 2017, pp. 353-362
summary	The development and the innovation of tools, techniques and digital applications represent a challenge for those who are in charge of architectural education to keep up with this development. This is because these techniques provide potentials that are not available in the traditional method of teaching. This raises an important question: can these tools and techniques help to achieve the targeted outcomes of education? This research paper discusses how to integrate both digital 3D models, of CAAD, and interactive applications for the development of architectural education curriculum. To test this, a case study has been conducted on the subject of building construction, for the second year at the faculty of engineering, specifically, the bearing walls construction system. In addition, this study has been divided into three parts. Through the first part, the scientific content of the curriculum, which tackles the bearing walls, has been prepared. The second part shows how to convert the scientific content into an interactive content in which the students learn through the experiment and the simulation of the traditional construction methods as the students a acquire construction skills and the ability to imagine different structural complexities. The third part includes the creation of both the application and the software containing the interactive curriculum. Workshop for the students has been held as a case study to test the effectiveness of this development and to recognize the pros and cons. The results confirmed the importance of integrating this applications into architectural education.
keywords	CAAD; 3D modeling ; Building Construction; Interactive applications; Bearing walls systems
series	eCAADe
email
last changed	2022/06/07 07:49

_id	ascaad2004_paper16
id	ascaad2004_paper16
authors	Hassan, R.; K. Jorgensen
year	2004
title	Computer Visualizations in Planning
source	eDesign in Architecture: ASCAAD's First International Conference on Computer Aided Architectural Design, 7-9 December 2004, KFUPM, Saudi Arabia
summary	A wide range of visualizations have been developed and implemented as tools for urban simulations and visual impact assessment. These include: plans, diagrams, elevations, perspective sketches, renderings, modified photographs (photo renderings and photomontages), slide projections, scale models, movies, videotapes and computer graphics. In the last decade, graphical computer applications have proven to be an increasingly supportive tool in visualization and manipulation of graphical material. This study presents the state of the art of computer visualization in planning. More specifically, the use of web-based computerized visualizations for landscape visual simulation, with the aim to develop a system of visualization techniques as an aid to communicating planning and design scenarios for historically important landscapes and urban places, with particular attention to the city of Nablus in Palestine. This has led to the evaluation of possibilities and potentials of computer use in this field, and to the definition of the visual problems and challenges of the city of Nablus. This study will argue what extra one can draw from computerized visualizations, what is likely to be its impact on future planning and design research, and what this visualization experience really means for historical important locations as in Nablus. The study demonstrates that computerized visualizations can be a powerful tool in representing a cityscape in three-dimensions from different angels. Visualizations will allow better understanding of the components of the city, its landscapes, city features and the process of change. In this way it may provide new and better platforms for public participation in planning.
series	ASCAAD
email
last changed	2007/04/08 19:47

_id	ascaad2016_029
id	ascaad2016_029
authors	Hassan, Ramzi; Frode Saetre and Knut Andreas Oyvang
year	2016
title	Trends and Practices Using 3D Visualizations for Large-Scale Landscape Projects in Norway
source	Parametricism Vs. Materialism: Evolution of Digital Technologies for Development [8th ASCAAD Conference Proceedings ISBN 978-0-9955691-0-2] London (United Kingdom) 7-8 November 2016, pp. 269-274
summary	New advances in 3D modelling and visualization tools for large-scale landscape and construction projects have been achieved recently. The introduction of the new 3D digital modelling and visualization tools, e.g. CAD, VR, GIS and BIM initiated a huge shift in the way planners and designers develop, communicate and present project scenarios. This paper outlines the challenges, new trends and workflows connected to the use of new tools and how it’s been practiced and experienced by professionals and stakeholders as observed in Norway. The observation shows that the latest developments are providing new potentials for performing better communication and collaboration. Planners could now demonstrate many aspects of a project which exceed the usual minimum requirements. An important functionality is the capability to work with huge amount of data-sets for large-scale projects which were previously almost impossible to work with.
series	ASCAAD
email
last changed	2017/05/25 13:31

_id	ff7d
authors	Hastak, M.
year	1998
title	Advanced automation or conventional construction process?
source	Automation in Construction 7 (4) (1998) pp. 299-314
summary	The rapidly developing area of construction automation leads construction managers to critically evaluate the feasibility of replacing conventional construction processes by automated systems. This decision requires careful analysis of tangible and intangible factors such as need-based criteria, economic criteria, technological criteria, project specific criteria, and safety/risk criteria. This paper presents a decision making model and a decision support system (DSS) to assist construction managers in systematically evaluating whether to opt for a conventional construction process or an automated system for a given project. The proposed DSS, called AUTOCOP (AUTomation Option evaluation for COnstruction Processes), utilizes the Analytical Hierarchy Method (AHP) to analyze the tangible and the intangible set of criteria involved in the decision problem.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	da25
authors	Hatanaka T. et al
year	1998
title	Development of semi-spherical screen VR System for exploring urban environment
source	Proceedings ICATÌ98, pp. 95-101
summary	Semi-spherical screen VR system is introduced, which is under development as the main part of a distributed multi-user VR environment. With this system users can obtain more immersive stereo VR view than other conventional system. The imple-mentation details are described, and the rendering method used in this system is discussed. In this method, whole view is rendered by dividing view volumes and processed by inverse distortion cor-rection, which cancel image distortion caused by projection onto spherical screen.
series	other
last changed	2003/04/23 15:50

_id	acadia15_371
id	acadia15_371
authors	Hatefnia, Navid; Ghobad, Marjan
year	2015
title	Computing Outdoor Comfort Based on CBE Thermal Comfort Calculation for Ashrae-55
doi	https://doi.org/10.52842/conf.acadia.2015.371
source	ACADIA 2105: Computational Ecologies: Design in the Anthropocene [Proceedings of the 35th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-53726-8] Cincinnati 19-25 October, 2015), pp. 371-480
summary	Environmental analysis as part of the initial design process, affords precise consideration of the bioclimatic human conditions within the environmental local context. The daily growth in inter alia knowledge of effective parameters in environmental conditions, quality weather data, human thermo-physiology studies – all contribute to improving the potential for achieving a relatively accurate analyses of environmental conditions by overlaying and computing all the climatic and thermo-physiological data. This paper describes a digital method for examining different points in the same context by computing all the input data available to understand the corresponding human comfort condition levels, thus leading to better decision-making at early design stages. Information about the site, climate, human thermo-physiology and behavioral aspects among others are collected where each data parameter is matched and analyzed to the context of every node on the model through a series of specific computational algorithms. Thereafter, the data from the nodes are statistically cleaned, classified and integrated based on the CBE thermal comfort calculation for ASHRAE-55. The results obtained using this method, can be tailored according to the desired outcomes. The proposed method identifies effective factors for human comfort condition improvement for different points on the context. It also provides a means to priorities specific parameters so that they can be manipulated for optimal digital design solutions, ie. Aligned to the desired conditions in the specific parts of the site with the aim of optimize outdoor space usage.
keywords	Micro-Climate, Outdoor Comfort, Urban Design, Environmental Aspects, Bio-Climatic Conditions
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:49

_id	acadia22_366
id	acadia22_366
authors	Hauptman, Jonas; Haghnazar, Ramtin; Moghaddam, Sara Saghafi
year	2022
title	Developing a Digital Design Workflow for Nexorade Bamboo Structure
source	ACADIA 2022: Hybrids and Haecceities [Proceedings of the 42nd Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 979-8-9860805-8-1]. University of Pennsylvania Stuart Weitzman School of Design. 27-29 October 2022. edited by M. Akbarzadeh, D. Aviv, H. Jamelle, and R. Stuart-Smith. 366-377.
summary	This paper presents a case study integrating generative design and bamboo culm geometries. Our goal is to improve the application of biological materials in a responsive Computer-Aided Design (CAD) process. While employing eccentric biological materials such as bamboo imposes an added layer of complexity on the design-to-fabrication process, it may also offer more sustainable material application and expand the frontiers of design and fabrication research methods. The methods explored in this paper are deployed to realize freeform Nexorade structures (FNS) that are explicitly tailored to individual bamboo culms (BC); each of these has been measured to explore the potential that material eccentricity may be a district benefit rather than a detriment to the quality and efficiency of a design.
series	ACADIA
type	paper
email
last changed	2024/02/06 14:00

_id	8d5e
authors	Hayes-Roth, Frederick, Waterman, Donald A. and Lenat, Douglas B. (editors)
year	1983
title	Building Expert System
source	vii, 444 p. : ill
summary	Reading,Mass.: Addison-Wesley Pub., 1983. 1: include bibliography: p. 405-420 -- (Teknowledge Series in Knowledge Engineering. Hayes-Roth, Frederick, series editor). This book is a collaboration of 38 expert system researchers and developers. It provides a broad introduction to the concepts and methods necessary for an understanding of how these systems work
keywords	AI, expert systems
series	CADline
last changed	2003/06/02 10:24

_id	c8a6
authors	Hayes-Roth, Frederick
year	1985
title	Rule-Based Systems
source	Communications of the ACM. September, 1985. vol. 28: pp. 921-932 : ill. includes bibliography
summary	An overview of rule-based systems, the best currently available means for codifying the problem-solving know-how of human experts
keywords	AI, knowledge, representation, expert systems
series	CADline
last changed	1999/02/12 15:08

_id	cf2005_1_33_194
id	cf2005_1_33_194
authors	HE Jie, TSOU Jin Yeu, XUE Yucai and CHOW Benny
year	2005
title	A Visual Landscape Assessment Approach for High-density Urban Development
source	Computer Aided Architectural Design Futures 2005 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-3460-1] Vienna (Austria) 20–22 June 2005, pp. 125-134
summary	The rapid developments of economy and urbanization bring great pressure to natural environment and resources, which contribute big challenge to sustainable urban development in high-density urban areas like Hong Kong, China and many other Eastern Asia cities. In these areas, protecting natural landscape resources and enhancing visibility to urban spaces and residential zones has become significant in improving the livability of human settlement. This paper presents a new approach in assessing the visual quality in high-density urban environment. The principal methodology is to quantitatively integrate human visual perception parameters with the visible landscape resources' characteristics. GIS is employed as the database and technical platform. A residential development in Hong Kong was used as a case study. The approach provides decision making support to urban planning, site layout design, and estate management during the early stage of the schematic design/planning process.
keywords	visual perception, visual quality assessment, urban planning, GIS
series	CAAD Futures
email
last changed	2006/11/07 07:27

_id	sigradi2022_273
id	sigradi2022_273
authors	He, Isa; Song, Humbi; Seibold, Zach; Ibrahim, Ibrahim; Sayegh, Allen
year	2022
title	Mental Breadcrumbs: Developing biometric methods to understand how emotions and sensory cues affect wayfinding
source	Herrera, PC, Dreifuss-Serrano, C, Gómez, P, Arris-Calderon, LF, Critical Appropriations - Proceedings of the XXVI Conference of the Iberoamerican Society of Digital Graphics (SIGraDi 2022), Universidad Peruana de Ciencias Aplicadas, Lima, 7-11 November 2022 , pp. 869–880
summary	How do one’s emotions, mental state, and the spatial environment interact? Interdisciplinary research methods in architecture and neuroscience can be used to examine the interrelated factors of mental load, sensory cues, emotions, and memory in wayfinding. The objective is to propose a biometric methodology for quantifying the emotional and cognitive experience of wayfinding, and to present a pilot experiment on the impact of mental load on wayfinding. The methodology collected biometric (electrodermal activity, electroencephalogram, heart rate, accelerometer), visuospatial (GPS, camera), and interview data. The pilot study revealed a new category of sensory cues used by individuals to wayfind. Identified as “breadcrumbs” and associated with subjective emotions, researchers propose an addition to Kevin Lynch’s elements of the built environment that contribute to cognitive mapping. The aim is to invite a rethinking of the typically precedent-based nature of spatial design, bolstering the discussion with individual experience data to encourage evidence-based design.
keywords	Interdisciplinary Design, Biometric, Wayfinding, Sensory Cues, Mental Load
series	SIGraDi
email
last changed	2023/05/16 16:57

_id	65cb
authors	He, J. and Tsou, J.-Y.
year	2002
title	GIS-Based Visual Perception Assessment of Mountain Skyline: A case study of Jinzishan Hill and the building layout of an adjacent site planning project
doi	https://doi.org/10.52842/conf.caadria.2002.241
source	CAADRIA 2002 [Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X] Cyberjaya (Malaysia) 18–20 April 2002, pp. 241-248
summary	In this paper, we present a GIS based approach to evaluate the visual perception quality of mountain skyline. Through computer generated analytical maps and perspectives, this tool can assist planners to define the visual reservation scopes for mountain skyline within urban area. It also offers concrete data supporting for appropriate strategy in building layout or site planning to preserve valuable natural skyline scenery.
series	CAADRIA
email
last changed	2022/06/07 07:49

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