MPI Informatics Building Model v1.0

MPI Informatics Building Model v1.0 - 3D Model Data

We provide the final and intermediate data files of the MPII building model in several 3D formats. Please, check some statistics before you download the model:

**** The complete model contains 73,216,589 triangles organized in 103,943 meshes and 623 light sources *****

Therefore, it might happen that you cannot use the model on your computer if you do not have enough memory installed. For example, when using a relatively small model in the [PBRT] format having 23,564,514 triangles in connection with a PBRT rendering package on a 64-bit computer, you need at least 8 Gigabytes of main memory to fit the data into memory and render an image using path tracing without exhaustive swapping.

Download:

The partial 3D model in the [PBRT format] (74,041,999 Bytes), which was converted to suit the rendering package accompanying the book Physically Based Rendering Toolkit by Matt Pharr and Greg Humphreys. The model consists of 23,564,514 triangles and 623 light sources. The process to convert the data into this format was carefully prepared and is described separately. This model does not include the furniture installed in the offices and lecture rooms, and therefore its complexity is limited.
The full 3D model in the [simple VRML97 format] (833,312,194 Bytes), which contains spot light sources and corrected BRDFs. This format strictly adheres to the ISO/IEC 14772 norm. This simplification of the model uses the VRML97 spotlight definition which has a very limited range of intensities and hence the model in this format is not accurate and cannot be used for predictive rendering. However, this variant of the model can be viewed in a standard VRML97 browser (on a powerfull PC from the year 2009).
The full 3D model in the [extended VRML97 format] (833,306,630 Bytes), which describes the lights by using goniometric light diagrams (from the area of far-field photometry). This extension has the following syntax:
PROTO GonioLight [
   exposedField MFString url []
   exposedField SFVec3f location 0 0 0
   exposedField SFVec3f direction 0 0 -1
   exposedField SFVec3f baseVector 1 0 0
   exposedField SFColor color 1 1 1
   exposedField SFFloat intensity 1
   exposedField SFBool on TRUE
] { }
and uses the IESNA-95 description of goniometric diagrams. The following is an example of a goniometric light definition:
DEF Light_01 GonioLight {
   url [ "IESlouis_poulsen.ies" ]
   location 903.2000 361.0000 -191.1000
   direction 0.0000 -1.0000 0.0000
   baseVector 1 0 0
   color 1.0000 0.9852 0.8705
   intensity 106.230003
   on TRUE
}

This extension allows to use the VRML language for predictive rendering. You can find the description of the IESNA-95 photometric file format in the paper by Ian Ashdown, for example.
The full 3D model as it was created in 3D Studio MAX in the [3D Studio MAX format] (949,814,292 Bytes), this version of the (MAX) format is the one used in Autodesk's 3ds Max 2009. The model in this representation contains only diffuse BRDFs and does not incorporate the correct positions of the light sources. Furthermore, the light sources are not described by goniometric diagrams. Therefore, this format cannot be used for predictive rendering.
The full 3D model in the [export VRML97 format] (845,665,050 Bytes), as exported from 3D Studio MAX (incorrect light sources and only diffuse BRDFs), according to the ISO/IEC 14772 format (description of the VRML97 language). Similarly to the MAX format, this variant of the model has only diffuse BRDFs and does not contain the correct positions of the light sources. Furthermore, the light sources are not described by goniometric diagrams. Therefore, this format cannot be used for predictive rendering.
The origin and orientation of the right handed coordinate system is visible in the print screen images from the modeling software: [image1] and [image2]. For people who know the building - the origin is on the ground floor, located closely to the doors of the presentation room 028.

Data Organization:

In order to make manipulation of the data easier, the model was decomposed into several layers. Depending on your needs you can simplify the model by choosing which layers should be loaded. The statistics and the semantics for the individual layers are listed in the table for the VRML97 format: The first column contains the name of the file, the second column refers to the number of triangles. The preview images and triangle counts were taken in the vrmlview software.

Important note: In case you simplify the model, please, use the numbers of the layers to specify which parts of the model are used. For example, if you omit the furniture in the offices, then the specification is MPIMODELv1.0(layer 1-13). This is required in order to permit exact reproducibility of the model data.

Layer #	File name VRML97	# triangles	Preview image	Semantics in the scene
1	doors.WRL	4,308,291		All the doors from the ground floor to the sixth floor.
2	equipment.WRL	2,045,910		All the fire extinguishers, emergency lights etc.
3	furnitureAndEquipment.WRL	4,676,965		Furniture and other equipment in the building which is not located inside the offices like plants, etc.
4	geometry.WRL	143,230		The basic construction, walls and floors.
5	heating.WRL	626,334		The heating radiators and pipes.
6	lampsGeometry.WRL	4,510,939		The geometry and holders for 623 light sources.
7	outerConstruction.WRL	2,009,326		The outer balconies and auxiliary metal constructions.
8	roof.WRL	145,300		The roof of the building.
9	stairsAndFences.WRL	1,032,274		The stairs and handrails for the main stairs and the two side stairs.
10	thinPlates.WRL	581,762		The thin plates covering on the outer walls of the building
11	ventilation.WRL	1,774,132		The ventilation tubes.
12	windows.WRL	1,590,481		The window frames and glasses.
13	windows_shutters.WRL	1,119,570		The shutters of all the windows.
14	furniture_0fl.WRL	1,611,244		The office furniture on the ground floor, lecture room 024.
15	furniture_1fl.WRL	2,158,565		The furniture on the 1st floor.
16	furniture_2fl_N.WRL	2,242,991		The furniture on the 2nd floor, north side.
17	furniture_2fl_E.WRL	1,675,212		The furniture on the 2nd floor, east side.
18	furniture_2fl_S.WRL	2,451,165		The furniture on the 2nd floor, south side.
19	furniture_2fl_W.WRL	607,897		The furniture on the 2nd floor, west side.
20	furniture_3fl_N.WRL	2,105,599		The furniture on the 3rd floor, north side.
21	furniture_3fl_E.WRL	2,381,072		The furniture on the 3rd floor, east side.
22	furniture_3fl_S.WRL	3,046,408		The furniture on the 3rd floor, south side.
23	furniture_3fl_W.WRL	2,223,730		The furniture on the 3rd floor, west side.
24	furniture_4fl_N.WRL	2,471,438		The furniture on the 4th floor, north side.
25	furniture_4fl_E.WRL	2,009,471		The furniture on the 4th floor, east side.
26	furniture_4fl_S.WRL	3,191,660		The furniture on the 4th floor, south side.
27	furniture_4fl_W.WRL	1,695,735		The furniture on the 4th floor, west side.
28	furniture_5fl_N.WRL	2,196,600		The furniture on the 5th floor, north side.
29	furniture_5fl_E.WRL	1,860,713		The furniture on the 5th floor, east side.
30	furniture_5fl_S.WRL	3,299,781		The furniture on the 5th floor, south side.
31	furniture_5fl_W.WRL	1,571,951		The furniture on the 5th floor, west side.
32	furniture_6fl_N.WRL	2,017,175		The furniture on the 6th floor, north side.
33	furniture_6fl_E.WRL	1,906,361		The furniture on the 6th floor, east side.
34	furniture_6fl_S.WRL	3,223,687		The furniture on the 6th floor, south side.
35	furniture_6fl_W.WRL	1,723,660		The furniture on the 6th floor, west side.

Simple test scene:

A simple test scene in the VRML/MAX/PBRT format with one light. This could be used for an initial testing of your renderer.

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Files: [MAX] [WRL] [PBRT] [PBRT] [EXR] [EXR] [all in ZIP file] (5,709,360 Bytes)

This page is maintained by Vlastimil Havran. The usage conditions and copyright for any content on this webpage is given at http://www.mpi-inf.mpg.de/resources/mpimodel/v1.0/index.html#Copyright It was last updated on 12th December 2009..