國立虎尾科技大學 |

Study of Building Surrounding Luminous Environment Using High Dynamic Range Image-Based Lighting Model.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Study of Building Surrounding Luminous Environment Using High Dynamic Range Image-Based Lighting Model./
Author:	Nahrkhalaji, Reza Sadeghi.
Description:	1 online resource (101 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-11(E), Section: B.
Contained By:	Dissertation Abstracts International78-11B(E).
Subject:	Architectural engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9781369992298

Study of Building Surrounding Luminous Environment Using High Dynamic Range Image-Based Lighting Model.
Nahrkhalaji, Reza Sadeghi.

Study of Building Surrounding Luminous Environment Using High Dynamic Range Image-Based Lighting Model. - 1 online resource (101 pages)

Source: Dissertation Abstracts International, Volume: 78-11(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

The accuracy of daylighting simulations for the built environment depends on the way its surround is represented in the simulation model. The common modeling practice of many designers is to create an exterior surround with a flat ground surface with little or no external architectural or landscape elements. In this dissertation, this abstraction and a number of different levels of detail for modeling the exterior surround were investigated by comparing real-life empirical measurements with their corresponding simulation results. A total of 13 different exterior views were each studied under 15 different sky/seasonal conditions to investigate the contribution of the surrounding features to the daylight delivered inside a small office. These features were classified into one of four different groups - sky, architectural structures, standing vegetation, and horizontal ground. Five of these locations were chosen for daylight simulation by applying six levels of detail to the exterior surround in a simulation model. The results reveal that ignoring exterior surround objects (common practice) yielded an average 67.9 percent error, while a high level of detail (which included high polygon vegetation representations) resulted in only an average 11.3% error. The LM-83 modeling recommendations resulted in an average of 22.8% error.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369992298Subjects--Topical Terms:

1180400
Architectural engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Study of Building Surrounding Luminous Environment Using High Dynamic Range Image-Based Lighting Model.
LDR:04020ntm a2200337Ki 4500 001 911126
005 20180517121920.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9781369992298
035 $a (MiAaPQ)AAI10629126
035 $a AAI10629126
040 $a MiAaPQ $b eng $c MiAaPQ
099 $a TUL $f hyy $c available through World Wide Web
100 1 $a Nahrkhalaji, Reza Sadeghi. $3 1182778
245 1 0 $a Study of Building Surrounding Luminous Environment Using High Dynamic Range Image-Based Lighting Model.
264 0 $c 2017
300 $a 1 online resource (101 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 78-11(E), Section: B.
500 $a Adviser: Richard G. Mistrick.
502 $a Thesis (Ph.D.) $c The Pennsylvania State University $d 2017.
504 $a Includes bibliographical references
520 $a The accuracy of daylighting simulations for the built environment depends on the way its surround is represented in the simulation model. The common modeling practice of many designers is to create an exterior surround with a flat ground surface with little or no external architectural or landscape elements. In this dissertation, this abstraction and a number of different levels of detail for modeling the exterior surround were investigated by comparing real-life empirical measurements with their corresponding simulation results. A total of 13 different exterior views were each studied under 15 different sky/seasonal conditions to investigate the contribution of the surrounding features to the daylight delivered inside a small office. These features were classified into one of four different groups - sky, architectural structures, standing vegetation, and horizontal ground. Five of these locations were chosen for daylight simulation by applying six levels of detail to the exterior surround in a simulation model. The results reveal that ignoring exterior surround objects (common practice) yielded an average 67.9 percent error, while a high level of detail (which included high polygon vegetation representations) resulted in only an average 11.3% error. The LM-83 modeling recommendations resulted in an average of 22.8% error.
520 $a The surround landscape highly influences the quantity and quality of daylight in an interior space, and is often excluded from daylighting simulation mostly due to the complexity of 3D geometry of trees and lack of efficient and validated modeling technics. In this study, different methods of representing trees in a daylighting simulation model are investigated by comparing the simulation output to real life empirical measurements and computing the associated errors. Eight species of tree were studied in a natural and relatively isolated setting by collecting photographic (HDR; High Dynamic Range) and photometric (luminance, illuminance and irradiance) data at 4 sky conditions and 8 view angles. A daylight simulation model was created in which trees were represented with high-poly and primitive geometry using a range of reflectance-transmittance material properties. The results revealed the average simulation error for representing trees as primitive geometry (LM-83 recommendation) was 120.7% (RMSE; Root Mean Square Error). Additionally Plastic and Trans material definitions were considered in the simulation model and a Response Surface Model (RSM) statistical design was chosen for data analysis. The findings showed the simulation error could be lowered to 52.8% with proper material definition for the primitive geometry and 32.9% if a high-poly 3D geometry was applied.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Architectural engineering. $3 1180400
655 7 $a Electronic books. $2 local $3 554714
690 $a 0462
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a The Pennsylvania State University. $b Department of Architectural Engineering. $3 1182779
773 0 $t Dissertation Abstracts International $g 78-11B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10629126 $z click for full text (PQDT)