OSM2World - Tobias Knerr - State of the Map 2013

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*** Presented at State of the Map 2013 in Birmingham, UK *** http://lanyrd.com/2013/sotm/scphgg/ With the coverage of basic map features approaching completeness for well-mapped areas, mappers are looking for new challenges – so adding a third dimension to OpenStreetMap's data is an exciting idea. There are a wide range of potential applications, including not only traditional slippy maps, but also modelling software, simulations, or video games. In this session Tobias will give an overview of 3D information currently available in the OpenStreetMap database, explain how the open- source renderer OSM2World makes use of this data, and discuss the future of 3D mapping.

Technology Art & Photos

Tobias Knerr

OSM2World

3D Rendering for OpenStreetMap
SOTM 2013

Why 3D? – Mapper’s perspective
●

●

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lack of visual
feedback for many
detailed tags
“complete” maps
in many regions
opportunity to
expand our scope

Why 3D? – Use cases
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Many potential applications:
–

improved visuals for maps

–

virtual reality

–

modelling software

–

simulations

–

video games

–

...

3D Mapping: Buildings
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Basics
–
–

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building:levels=7
building:min_level=5
height=24
min_height=16

building=*
building:part=*

Levels and Height
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height

–

min_height

–

building:levels

–

building:min_level

5 floors
16 meters

building:levels=7
height=24

7 floors
24 meters

3D Mapping: Buildings
●

Materials
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building:material

–

building:colour

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roof:material

–

roof:colour

3D Mapping: Buildings
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Roof shapes
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roof:shape = flat/gabled/hipped/mansard/...

–

roof:orientation or roof:direction

3D Mapping: Highways
highway

width

lanes

3D Mapping: Highways
●

Some information is not specific to 3D:
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surface

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turn lane layout

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highway=crossing

–

traffic lights

–
●

footway, cycleway

...

Frequently: 3D as motivation to collect data
which is useful elsewhere.

OSM2World
http://osm2world.org

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Free Software (LGPL)

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3D models from OpenStreetMap data

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Flexible use as converter and renderer

OSM2World: Basics
.osm
.pbf
…
OSM Data

.obj
OSM2World

.png
.pov
…
3D Models

OSM2World: Viewer Application
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locally installed Java application

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loads any .osm, including JOSM output

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configuration through style & config files

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free camera placement and scene exploration

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export to all supported formats

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optional CLI for tile rendering, batch exports ...

OSM2World: Slippy map
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uses OpenLayers

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4 viewing directions

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pre-rendered tiles (due to slow rendering)

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about 1–2 weeks for each update ☹

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coverage: D, A, CH only ☹☹

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small areas elsewhere possible:
just ask me … or host SOTM

OSM2World: WebGL
●
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(probably) the future of 3D web content
no server-side OpenGL required
=> better coverage and faster updates

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animations, free camera, weather effects ...

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but: WebGL service still under construction

The Future: Tagging improvements
●

hints for elevation (currently mostly SRTM):
–

incline, (physical) maxheights, river directions, ...

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bridge/tunnel areas or relations

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bridge classification

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lane transitions

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road areas, junction details

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some additional building tags

The Future: Creative Experiments

http://forum.osm.org/viewtopic.php?id=20012

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