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	ecaade2018_163
id	ecaade2018_163
authors	Hadighi, Mahyar and Duarte, Jose
year	2018
title	Adapting Modern Architecture to a Local Context - A Grammar for Hajjar’s Hybrid Domestic Architecture
doi	https://doi.org/10.52842/conf.ecaade.2018.2.515
source	Kepczynska-Walczak, A, Bialkowski, S (eds.), Computing for a better tomorrow - Proceedings of the 36th eCAADe Conference - Volume 2, Lodz University of Technology, Lodz, Poland, 19-21 September 2018, pp. 515-524
summary	The purpose of this study is to analyze Abraham William Hajjar's single-family houses in State College, PA, using shape grammar as a computational design methodology. Hajjar was a member of the architecture faculty at the Pennsylvania State College (now The Pennsylvania State University), a practitioner in State College, and an influential figure in the history of architecture in the area. In this study, shape grammars are used specifically to verify and describe influences of modern architecture, as defined by Hitchcock and Johnson (1932), and influences of local traditional American architecture on Hajjar's domestic architecture. The underlying hypothesis is that Hajjar's work is the result of a hybridity phenomenon that can be traced through a computational design methodology. The first step in this endeavor and the study focus is to establish Hajjar's single-family architectural language. Future work will be concerned with verifying and describing the hybridity between modern architecture and traditional architecture expressed in Hajjar's work by comparing his grammar with grammars underlying modern and traditional architecture likewise.
keywords	shape grammar; modern architecture ; American architecture; William Hajjar; hybridity; single-family houses
series	eCAADe
email
last changed	2022/06/07 07:49

_id	ecaaderis2018_115
id	ecaaderis2018_115
authors	Hadighi, Mahyar and Duarte, Jose
year	2018
title	Local Adaptation of Modern Architecture - A Grammar for Hajjar’s Domestic Architecture
source	Odysseas Kontovourkis (ed.), Sustainable Computational Workflows [6th eCAADe Regional International Workshop Proceedings / ISBN 9789491207143], Department of Architecture, University of Cyprus, Nicosia, Cyprus, 24-25 May 2018, pp. 15-20
keywords	The purpose of this study is to analyze Abraham William Hajjar's single-family houses in State College, PA, using shape grammar as a computational design methodology. Hajjar was a member of the architecture faculty at the Pennsylvania State College (now The Pennsylvania State University), a practitioner in State College and an influential figure in the history of architecture in the area. Shape grammars are used specifically to verify and describe the influences of modern architecture as defined by Hitchcock and Johnson (1932) and traditional American architecture in the area on Hajjar's domestic architecture. The underlying hypothesis is that the work of Hajjar is the result of a hybridity phenomenon that will be traced through a computational design methodology. The first step in this endeavor is to establish the single-family architectural language of Hajjar, which is briefly described in this paper. Future steps will aim at verifying and describing the hybridity between modern architecture and traditional architecture in his work by comparing Hajjar's grammar with grammars encoding modern and traditional architecture.
series	eCAADe
email
last changed	2018/05/29 14:33

_id	ecaadesigradi2019_273
id	ecaadesigradi2019_273
authors	Hadighi, Mahyar and Duarte, Jose
year	2019
title	Using Grammars to Trace Architectural Hybridity in American Modernism - The case of William Hajjar single-family house
doi	https://doi.org/10.52842/conf.ecaade.2019.1.529
source	Sousa, JP, Xavier, JP and Castro Henriques, G (eds.), Architecture in the Age of the 4th Industrial Revolution - Proceedings of the 37th eCAADe and 23rd SIGraDi Conference - Volume 1, University of Porto, Porto, Portugal, 11-13 September 2019, pp. 529-540
summary	In this paper, mid-century modern single-family houses designed by William Hajjar are analyzed through a shape grammar methodology within the context of the traditional architecture of an American college town. A member of the architecture faculty at the Pennsylvania State University, Hajjar was a practitioner in State College, PA, where the University Park campus is located, and an influential figure in the history of architecture in the area. The residential architecture he designed for and built in the area incorporates many of the formal and functional features typical of both modern European architecture and traditional American architecture. Based on a computational methodology, this study offers an investigation into this hybridity phenomenon by exploring Hajjar's architecture in relation to the traditional American architecture prevalent in the college town of State College.
keywords	shape grammar; American architecture; William Hajjar; hybridity; college town
series	eCAADeSIGraDi
email
last changed	2022/06/07 07:49

_id	ecaade2021_114
id	ecaade2021_114
authors	Hadighi, Mahyar
year	2021
title	Towards a Configurable Hybridity in Historic Preservation and Design
doi	https://doi.org/10.52842/conf.ecaade.2021.2.293
source	Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 2, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 293-302
summary	This paper fulfills the dual purpose of developing a systematic methodology for designing new constructions and adding to or revivifying existing buildings in historic neighborhoods and demonstrating an effective pedagogy in regard to historic preservation at the undergraduate level. A previously developed methodology for verifying and analyzing hybridity in architectural design is expanded as a foundation for designing an addition to a historic building in a famous urban context, i.e., a registered historic structure in the museum district of New York City. Shape grammar as a computational design methodology is used to analyze the historic fabric of the urban area and to create a configurable hybrid design that is both compatible with that context and reflective of the needs and design of the contemporary urban setting. The validity of shape grammar as a methodology for designing configurable hybrid constructions in historic neighborhoods and its effectiveness in relation to a teaching focus on historic preservation are considered through an analysis of projects from an upper-undergraduate-level architectural design studio. The students used the shape grammar methodology to analyze and understand historic contexts and features in order to generate new designs for the given context.
keywords	Configurable hybridity; Historic preservation ; Shape grammar; Neue Galerie; Vienna Secession
series	eCAADe
email
last changed	2022/06/07 07:49

_id	100d
authors	Hadikusumo, B.H.W. and Rowlinson, S.
year	2001
title	Development of a virtually real construction site - design for safety
source	CIDAC, Volume 3 Issue 2 May 2001
summary	Interpreting two-dimensional drawings presents problems for builders since they are required to transfer these into three-dimensional mental images. Virtual Reality (VR) technology has several advantages. One is that it can be used to solve the problem of image transfer since VR supports a What-You-See-Is-What-You-Get object together with a binocular effect, improving users' visual sense. Another advantage of VR is the capability to present a real time dynamic simulation, which can be used to represent construction processes. By representing virtually real construction components and processes, users can walk through the virtual project. Using his/her safety knowledge, he/she can identify safety hazards inherent within the virtually real construction components and processes and determine the appropriate safety precautions to employ to make the virtual construction site safe. This hazard identification process can be better achieved if a guideline is provided. Therefore, a Design-For-Safety-Process (DFSP) guideline is developed to assist users to identify safety hazards as well as to recommend remedial safety measures. This paper discusses how virtual reality benefits the construction industry in terms of a design representation. In addition, important issues in developing virtually real construction components and processes as well as functions of virtual reality which are needed to support the DFSP are discussed.
series	journal paper
last changed	2003/05/15 20:36

_id	ijac20097107
id	ijac20097107
authors	Hadjimitsis, D.G.; Themistocleous, K.; Agapiou, A.; Clayton, C.R.I.
year	2009
title	Monitoring Archaeological Site Landscapes in Cyprus using Multi-temporal Atmospheric Corrected Image Data
source	International Journal of Architectural Computing vol. 7 - no. 1, 121-138
summary	This paper aims to examine the use of satellite remote sensing for monitoring archaeological and more generally cultural heritage sites. For this purpose, multi-temporal data from Landsat 5 TM, Landsat 7 ETM+ and Quickbird images were applied. The paper also discusses the importance of atmospheric correction at the pre-processing step in order to determine true surface reflectance values by removing these effects from satellite images. Atmospheric correction is arguably the most important part of the pre-processing of satellite remotely sensed data and any omission produces erroneous results. The effects of the atmosphere are more severe where dark targets are shown in the satellite image. In the management of cultural heritage sites, since temporal satellite images are required for monitoring purposes, the effect of the atmosphere must be considered. In-situ spectro-radiometric measurements using the GER1500 field spectro-radiometer have been used to assess the reflectance values found after applying the darkest pixel atmospheric correction to the image data. The study area consist the Amathus archaeological site in Limassol and the Nea Paphos archaeological site area located in Paphos district area in Cyprus. Vegetation Index (NDVI) change detection algorithm has been applied to a series of thirteen Landsat TM/ETM+ images of Amathus archaeological site in Limassol. Classification and extraction algorithms have been applied to Landsat TM and Quickbird high resolution images of Nea Paphos archaeological site area.
series	journal
last changed	2009/06/23 08:07

_id	2005_319
id	2005_319
authors	Hadjri, Karim
year	2005
title	Assessing the Use of Contact and Non-Contact 3-Dimensional Digitization in Architectural Design Studios
doi	https://doi.org/10.52842/conf.ecaade.2005.319
source	Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 319-327
summary	This paper presents a recent experience related to the use of 3D digitization and digital modelling. This was done with the aim to bridge the gap between physical and digital models produced by students as part of their design development exercise. The paper examines the use of 3D digitization in architectural design education, by using both contact and non-contact scanning technology. The main aim was to translate physical models using 3-Dimensional digitization in order to create accurate digital copies. Finally, the paper discusses the results of the use of 3D digitisation and the digital modelling process, and assesses the benefit of this technology within an educational setting.
keywords	Digitization; Laser Scanning; Studio; Models; Modelling
series	eCAADe
email
last changed	2022/06/07 07:49

_id	ijac20064205
id	ijac20064205
authors	Hadjri, Karim
year	2006
title	Experimenting with 3D Digitization of Architectural Physical Models using Laser Scanning Technology
source	International Journal of Architectural Computing vol. 4 - no. 2, 67-80
summary	This paper assesses the use of 3D Digitization techniques by carrying out laser scanning of typical physical models produced by architecture students. The aim was to examine the product of laser scanning with respect to scanning and 3D modeling processes, and the effects of variables such as characteristics of the models, materials used, and design complexity. In order to assess the similarities and accuracies achieved by the scanning and 3D modeling processes, the research investigated human perception of differences between analogue and digital models. This enabled an assessment of the degree to which digital models were accurate representations of the real ones, and whether laser scanning can successfully be used as a medium to recreate and represent complex architectural physical models. The study presents a potential direction for digital translation in architectural education.
series	journal
last changed	2007/03/04 07:08

_id	ecaade2017_011
id	ecaade2017_011
authors	Haeusler, M. Hank, Asher, Rob and Booth, Lucy
year	2017
title	Urban Pinboard - Development of a platform to access open source data to optimise urban planning performance
doi	https://doi.org/10.52842/conf.ecaade.2017.1.439
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. 439-448
summary	In this paper we present our research to design and develop 'Urban Pinboard', a platform to optimise urban planning process and performance. We argue that second machine age general purpose technologies can now be accessed for city modelling. Based on the observation that: GIS does offer a depository that can display urban data; data sets exist but often stored at different locations; there is a discrepancy of access to planning information; and the data often are not accessible to private / public sector and the general public on one location, Urban Pinboard aims to address these problems as an integrated digital platform that enables the public, private and community sectors to connect by contributing ideas, comments and proposals on all planning issues in a single platform. The paper outlines the background research, methodology and introduces the Urban Pinboard's features to create a single source of truth for planning data.
keywords	Software development; web-based GIS platform; Urban Planning; planning data
series	eCAADe
email
last changed	2022/06/07 07:49

_id	caadria2021_013
id	caadria2021_013
authors	Haeusler, M. Hank, Butler, Andrew, Gardner, Nicole, Sepasgozar, Samad and Pan, Shan
year	2021
title	Wasted ... Again - Or how to understand waste as a data problem and aiming to address the reduction of waste as a computational challenge
doi	https://doi.org/10.52842/conf.caadria.2021.1.371
source	A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 1, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 371-380
summary	The global construction industry is the single largest consumer of materials on the planet. Of that material consumption anywhere between 10-20% will end up in landfills as waste. Currently, there are three approaches to tackle this problem - reduce, reuse, and recycle. Concentrating purely on the challenge of reducing waste this research aims to address the problem of waste in the construction industry by addressing it in the preliminary design stage. It does so by asking the research question if computational design offers opportunities towards lean construction or to achieve Zero Waste by understanding waste as a data management challenge. For our research materials are specified in databases outlining geometrical and quantitative information either in material supplier databases (homepage) or in architecture and construction databases via Revit or Grasshopper. Consequently, one can collect via web scraping, investigate via databases, inspect and compare via Grasshopper and Python these databases to understand if one can transform data into information towards material use and consequently into knowledge on waste production and reduction. This investigation, its proposed hypothesis, methodology, implications, significance, and evaluation are presented in the paper.
keywords	Construction industry; waste reduction; databases; web scraping; computational design
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	caadria2017_002
id	caadria2017_002
authors	Haeusler, M. Hank, Muehlbauer, Manuel, Bohnenberger, Sascha and Burry, Jane
year	2017
title	Furniture Design Using Custom-Optimised Structural Nodes
doi	https://doi.org/10.52842/conf.caadria.2017.841
source	P. Janssen, P. Loh, A. Raonic, M. A. Schnabel (eds.), Protocols, Flows, and Glitches - Proceedings of the 22nd CAADRIA Conference, Xi'an Jiaotong-Liverpool University, Suzhou, China, 5-8 April 2017, pp. 841-850
summary	Additive manufacturing techniques and materials have evolved rapidly during the last decade. Applications in architecture, engineering and construction are getting more attention as 3D printing is trying to find its place in the industry. Due to high material prices for metal 3d printing and in-homogenous material behaviour in printed plastic, 3D printing has not yet had a very significant impact at the scale of buildings. Limitations on scale, cost, and structural performance have also hindered the advancement of the technology and research up to this point. The research presented here takes a case study for the application of 3D printing at a furniture scale based on a novel custom optimisation approach for structural nodes. Through the concentration of non-standard geometry on the highly complex custom optimised nodes, 3D printers at industrial product scale could be used for the additive manufacture of the structural nodes. This research presents a design strategy with a digital process chain using parametric modeling, virtual prototyping, structural simulation, custom optimisation and additive CAD/CAM for a digital workflow from design to production. Consequently, the digital process chain for the development of structural nodes was closed in a holistic manner at a suitable scale.
keywords	Digital fabrication; node optimisation; structural performance; 3D printing; carbon fibre.
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	caadria2014_002
id	caadria2014_002
authors	Haeusler, M. Hank; Danny Nguyen and Margaret Goldsack
year	2014
title	Ruled Surface Media Facades
doi	https://doi.org/10.52842/conf.caadria.2014.689
source	Rethinking Comprehensive Design: Speculative Counterculture, Proceedings of the 19th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2014) / Kyoto 14-16 May 2014, pp. 689–698
summary	Traditionally media facades have been created using 2D surfaces, not dissimilar to televisions. As computational architecture continues to explore non-Euclidian shapes it is a logical process to investigate the use and possibilities of emerging complex curved surfaces for the display of media content to match architectural design aspirations with demands of ubiquitous city concepts of penetrating surfaces with information. Drawing on existing architectural knowledge of ruled surfaces the paper outlines the implementation of adopting existing principles from architecture and mathematics to contemporary discussions in media architecture. It demonstrates that ruled surfaces can function as media facades by simulating ten different ruled surface types in Grasshopper and overlaying them with different video content. Based on the results the team proceeded to build a 1:1 prototype of a hyperbolic paraboloid to test if the simulated results in the computer matched with the physical model. The prototype was further tested using media content to observe the visibility of the display from various viewing positions. Based on the findings the paper concludes that ruled surface media facades are feasible. This investigation, its proposed hypothesis, methodology, implications, significance and evaluation are presented in the paper.
keywords	Media facades; responsive architecture; ruled surfaces; non-Euclidian spaces
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	ecaade2009_014
id	ecaade2009_014
authors	Haeusler, Matthias Hank
year	2009
title	Media-Augmented Surfaces: Embedding Media Technology into Architectural Surface to Allow a Constant Shift between Static Architectural Surface and Dynamic Digital Display
doi	https://doi.org/10.52842/conf.ecaade.2009.483
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference Proceedings / ISBN 978-0-9541183-8-9] Istanbul (Turkey) 16-19 September 2009, pp. 483-490
summary	The way screens are attached to architecture at present limits architectural surfaces to carriers of signs. The research presented in this paper offers a possible solution that allows architectural surfaces to be both a space-defining element that has certain architectural material qualities and at the same time allows media technology to be embedded. These surfaces can alter their state from static material to dynamic image in an instance. The paper presents a prototype capable of fulfilling this requirement. It also positions the research within the architectural discussion by comparing it to works of others and confirming its research value by reference to work in a similar direction. Finally, the paper evaluates the research and concludes that it could offer a ‘fabric’ to be used as a sort of media clothing for architecture in the electronic age (Ito, 2001).
wos	WOS:000334282200058
keywords	Media facade technology, media-augmented spaces, architectural screen design, media architecture, digital displays
series	eCAADe
email
last changed	2022/06/07 07:51

_id	ecaade2020_197
id	ecaade2020_197
authors	Haghighi, MohammadYousef and Mahdavinejad, Mohammadjavad
year	2020
title	HelioPhilia Intelligent Kinetic Canopy
doi	https://doi.org/10.52842/conf.ecaade.2020.2.243
source	Werner, L and Koering, D (eds.), Anthropologic: Architecture and Fabrication in the cognitive age - Proceedings of the 38th eCAADe Conference - Volume 2, TU Berlin, Berlin, Germany, 16-18 September 2020, pp. 243-250
summary	In the contemporary changing world, digital architecture is to bring us new horizons and opportunities to take a determining step toward future. It results in speed and precision in process of design and construction. Moreover, the world is shifting to smartness. This paper is to develop a comprehensive mechanism to design an innovative canopy inspired from nature. Therefore, the canopy is going to inspire from young sunflowers. The canopy consists of a multi-functional waffle-frame. The main wing of the platform structure can have alternative utilization and the amount of light passing through it can be adjusted by using shade on the waffle spaces. Solar panels can also be used on the frames conductive to supply the energy independently. This HelioPhilia canopy always seeking the daylight, therefore, it cast a shadow behind itself to provide much more comfortable environment for whom choose there to be inside as a user. The results emphasize on the role of learning from nature in successful digital design process.
keywords	HelioPhilia Architecture; Intelligent Architecture; Kinetic Spaces; Digital Fabrication; High-Performance Architecture; Interactive Design
series	eCAADe
email
last changed	2022/06/07 07:51

_id	85b9
authors	Haglund, Bruce and Sumption, Brian
year	1988
title	Toward a Computer Integrated Design Studio
doi	https://doi.org/10.52842/conf.acadia.1988.291
source	Computing in Design Education [ACADIA Conference Proceedings] Ann Arbor (Michigan / USA) 28-30 October 1988, pp. 291-299
summary	The formation of our vision for a computer-integrated design studio is outlined. The ways in which our experience in teaching with computers in a variety of settings and in developing our own computer tools has contributed to this is explained. The next step in actualization of our vision is the creation of a design curriculum and a computerized studio which support the integration of this new technology into the traditions of architectural education.
series	ACADIA
last changed	2022/06/07 07:51

_id	ecaade2023_308
id	ecaade2023_308
authors	Haidar, Adonis
year	2023
title	Evolution of Modelling in Architecture: A Framework for the categorisation and evaluation of digital models in Architectural Design
doi	https://doi.org/10.52842/conf.ecaade.2023.2.811
source	Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 1, Graz, 20-22 September 2023, pp. 811–820
summary	Apart from being an integral part of the architectural design process, modelling is becoming central to architecture as well as to neighbouring fields. The technologies and tools applicable for the generation, development and coordination of models are growing rapidly. In one single project, a wide range of models is used which poses challenges in practice in terms of establishing a systematic way to utilise those modelling techniques and access their potential benefits. Aiming to enhancing the effectiveness and efficiency of the various modelling methods, this paper establishes a framework for the different types of models where the models are categorised and evaluated based on different criteria. To achieve this, a critical review of the literature related to the history of modelling in architecture and the emergence of the different methods of modelling is conducted. Beyond classical, CAD-based 3D models, the framework identifies four categories of modelling methods: performative modelling, algorithmic modelling, parametric modelling, and BIM. Each category is evaluated based on the generation and modification process, model entity and model function. Subsequently, the paradigm shifts associated with each modelling method are identified and discussed.
keywords	3D Modelling History, CAD, BIM, Generative/Algorithmic Modelling, Parametric Modelling, Performative Modelling, Paradigm Shift, Computational Design
series	eCAADe
email
last changed	2023/12/10 10:49

_id	896b
authors	Haider, Jawaid
year	1986
title	A Conceptual Framework for Communication -Instruction in Architectural Design
source	Pennsylvania State University
summary	Existing design models, it is generally acknowledged, are inadequate to deal with the complexity of contemporary situations; and an assessment of self-conscious design manifests a slow development in the power and scope of conceptualizing. The quality of knowledge and conceptual tools available to the designer largely determine his ability to conceive and accomplish; conversely, the limitations of method are reflected in design solutions. Some emerging social problem-solving paradigms, which seek to construct a cognitive psychology of problem solving, have a direct relevance to architectural design. Notwithstanding the traditional criticism and scepticism, problem solving is predicated by task environment and problem space as these have a significant impact on design synthesis. Despite a rigorous search for theoretical perspectives and methods, the concern for the quality of the physical environment persists unabated. Historically, architecture has depended on other disciplines for its theoretical insight; but the application of borrowed theories without a viable framework for translation has often resulted in misinterpretation. Aggravating the problem is the art-science controversy which has consequences for architectural practice and education. What is required is a unified approach encompassing the scientific and artistic modes of inquiry. But a unified perspective, involving vast and disparate areas of human knowledge, demands a conceptual framework for integrative learning. The proposed model of this study provides such a framework and calls for a re-examination of the conventional boundaries of design disciplines. It advocates an interdisciplinary approach and recognizes the design process as inherently a learning process; this shifts the emphasis from product to process and allows students to plan and assess their own design/learning experience. While the study focuses on substantive issues, it identifies a strategy for integrative learning applicable within the existing context of design education. Despite its untested nature, the proposed model can become a vehicle for stimulating coordination of all facets of human knowledge and experience toward creative design synthesis. It inculcates a sense of critical assessment of generative ideas by presenting a conceptually clearer picture of the design process to elicit a response to and a better understanding of the task environment of architecture.
series	thesis:PhD
email
last changed	2003/02/12 22:37

_id	cdrf2021_168
id	cdrf2021_168
authors	Hainan Yan1, Yiting Zhang, Sheng Liu, Ka Ming Cheung, and Guohua Ji
year	2021
title	Optimization of Daylight and Thermal Performance of Building Façade: A Case Study of Office Buildings in Nanjing
doi	https://doi.org/https://doi.org/10.1007/978-981-16-5983-6_16
source	Proceedings of the 2021 DigitalFUTURES The 3rd International Conference on Computational Design and Robotic Fabrication (CDRF 2021)
summary	In China’s hot summer and cold winter areas, the façade design of buildings needs to respond to a variety of performance objectives. This study focuses on the optimization of daylight and solar radiation of building façade of office buildings in Nanjing and proposes a simple and efficient method. The method mainly includes a random sampling of design models, simplified operation of daylight performance criteria and selection of optimal solution. The results show that the building façade can improve the indoor lighting uniformity and reduce the indoor illumination level compared with the unshaded reference building. Besides, the amount of solar radiation received by office buildings in summer and winter becomes more balanced with the building façade. The optimization design method of building façade proposed in this study can be of guiding significance for office buildings in Nanjing.
series	cdrf
email
last changed	2022/09/29 07:53

_id	d37c
authors	Haines, Eric A. and Greenberg, Donald P.
year	1986
title	The Light Buffer: A Ray Tracer Shadow Testing Accelerator
source	Comput. Graph. and App., vol. 6, no. 9, pp. 6-16, IEEE, Sept. 1986
summary	The basic ideas presented are classifying objects from the light's viewpoint, and caching shadowing objects. The classification scheme uses a modified z-buffer to create lists of objects in sorted order for each "pixel" the light sees and determining depths beyond which no light passes. The other technique presented is caching the object that was last intersected by a shadow ray and immediately testing this object for the next shadow ray for the same light at the same location in the ray tree. Shadow caching is simple and applicable to almost any ray tracer. Dieter Bayer implemented the light buffer for POV-Ray.
series	other
email
last changed	2003/04/23 15:14

_id	e65f
authors	Haines, Eric A. and Greenberg, Donald P.
year	1986
title	The Light Buffer: A Shadow-Testing Accelerator
source	IEEE Computer Graphics and Applications. September, 1986. vol. 6: pp. 6-16 : col. ill. includes bibliography
summary	In one area of computer graphics, realistic image synthesis, the ultimate goal is to produce a picture indistinguishable from a photograph of a real environment. A particularly powerful technique for simulating light reflection - an important element in creating this realism - is called ray tracing. This method produces images of excellent quality, but suffers from lengthy computation time that limits its practical use. This article presents a new method to reduce shadow testing time during ray tracing. The technique involves generating light buffers, each of which partitions the environment with respect to an individual light source. These partition descriptions are then used during shadow testing to quickly determine a small subset of objects that may have to be tested for intersection. The results of timing tests illustrate the beneficial performance of these techniques. The tests compare the standard ray-tracing algorithm to light buffers of varying resolution
keywords	realism, synthesis, ray tracing, algorithms, computer graphics, shadowing
series	CADline
last changed	2003/06/02 13:58

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