Virtual representation of a real-world object that is vizualized in a 3-dimensional artificial space.

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9
votes
4answers
176 views

Creating photogrametric point cloud of an object from distributed photographs, here: Making accurate 3D model of building using UAV imagery?

Is there a way of creating a photogrametric point cloud from a set of densly distributed photographs of an object? Application: I am trying to investigate if creating a 3D model (point cloud) of the ...
8
votes
2answers
565 views

Help with Draping an Image over a TIN in FME for viewing in MeshLab or Similar

I'm using FME to generate a TIN from a LiDAR point cloud, and everything is working except for draping an image over the resulting TIN. I've read all the FME help pages, and checked out the examples ...
7
votes
4answers
1k views

Assigning RGB values from Geotiff image to LiDAR data, using R

I have given a Geotiff image and its corresponding Lidar data (x,y,z) in UTM coordinates. I need to merge the Lidar data with the RGB values from the image. That means, at the end, I need to plot (...
4
votes
3answers
150 views

What is the difference between DEM data sources?

I have started experimenting creating basic 3D elevation models in QGIS recently. It turned out for me that there are several free sources of DEMs, like USGS's EarthExplorer, CGIAR-CSI's Digital ...
3
votes
4answers
2k views

How to create a point cloud from DEM?

Please forgive my ignorance if I am asking a totally irrelevant question, I am still a GIS newbie. I looked in Google and found a lot of links as of how to convert point clouds to DEMs. I am trying ...
3
votes
1answer
565 views

Create an animation that rotates around an central axis

I am looking to create an animation of a 3D model. I want the model to be the central object in the animation, so rotating around the model, always looking at the model. I am wondering what is the ...
3
votes
1answer
144 views

Looking for more realistic 3D terrain renderer than ESRI Arcscene

I am looking for simple suggestions of software packages that go beyond what ESRI ArcScene can offer. I want to create 3D terrain visualisations, particularly of orthophotos draped over high quality ...
3
votes
0answers
89 views

Questions about SRTM , .hgt format and the sea level/coastline

What a nice place here ! The questions/answers system is very elegant. I have read and get some useful informations allowing me to write a little .hgt reader... I am working on C.G.I and create 3d ...
2
votes
1answer
194 views

How to make a 3d visualisation of different peat layer to show the height of each layer?

I have bore hole point data that has about 5 to 7 types of peat layer and also has several depths. I also have digital elevation data of the area. I need to interpolate these layers separately, then ...
2
votes
1answer
159 views

3D model of rooftops based on LiDAR and cadastral data?

I´m trying to model building rooftops based on a LiDAR dataset. I've already interpolated using Delaunay's triangulation a DEM with 1 meter resolution. Due to LiDAR data is not accurate in building ...
2
votes
1answer
2k views

How can I import AutoCAD 3D solids into ArcGIS?

I have an AutoCAD drawing that contains contours and 3D solids. I am able to import the contours (which i don't need) but not the 3D solids (which I do need). I understand ArcGIS does not support ...
2
votes
1answer
43 views

Is it possible to export 3D model data from SimUrban?

Today I came across a 3D modelling package I haven't seen before - SimUrban. The client wants to migrate their SimUrban project to a more modern system, and the provider who built it is no longer ...
2
votes
0answers
33 views

Line Layer seems to be floating and shifted after adding terrain effect in Cesium

I had made add a line layer using cesium. In which i had added a terrain effect using the standard cesium terrain provider as below var dataSource1 = new Cesium.GeoJsonDataSource(); var roads = ...
2
votes
0answers
305 views

ArcGIS - multipatch and surface

I want to get 3D building. I have DEM surface and 3D feature of building roof. I created multipatch class by extruded building roof with '-' value. Is it possible to create building from this ...
2
votes
2answers
74 views

3D queryable GIS

I've used GIS for many years, and now I'm moving into 3D GIS, but I have some questions. Say I have a 3D model of a viliage, I can get this into Blender, but I want to be able to run GIS type queries....
2
votes
0answers
157 views

Importing 3D models/wireframes into QGIS

I was wondering if Qgis2threejs is able to import 3D models (wireframes in 3D dxf) from GoCad, Datamine or any other 3D modelling software? If not, is there any other plugins for QGIS that would be ...
2
votes
0answers
401 views

LiDAR point cloud to 3D model of street [duplicate]

I am looking for a way to convert point cloud collected through a Riegl LiDAR scanner to a perfect 3D model of a town. The sample data is from vehicle mounted scanner, but final data is going to be ...
1
vote
1answer
113 views

Viewing a geojson as 3D in cesium

I have a geojson with height informations in it. I tried adding the geojson to the scene using var viewer = new Cesium.Viewer('cesiumContainer', { sceneMode : Cesium.SceneMode.SCENE3D, timeline : ...
1
vote
1answer
33 views

Is it possible to use ArcGIS to define a boundary around a self-constructed 3D feature?

I am creating a 3D rendering of a future building and would like to know the distance from which this building would be visible from. Is it possible to use ArcGIS to define a boundary that delineates ...
1
vote
1answer
172 views

3D Symbology for a Model Farm in ArcScene

I am working on visualization of a model farm I have developed consisting of various types of grazing land, cropping areas and other. As I have constructed it myself, I don't have an image with it for ...
1
vote
2answers
2k views

3d print an area from Google Earth

Is it possible to extract all 3d data (terrain + objects: buildings, vegetation, landmarks, etc.) from Google Earth in an easy way and 3d print it? I found tutorials about extracting the terrain ...
1
vote
1answer
1k views

Import SketchUp created KML contour lines model to QGIS

There's a neat trick to create contour lines based on the GE 3D terrain using Sketch-Up. The resulting KML however is a model I have looked at ways of importing KML layers to QGIS, like it was ...
1
vote
0answers
51 views

Load 3D models on globe or 2D map

I'm using ol3, ol3-cesium for creating 2D map & 3D globe. These things are getting used at backend 1) tinyows 2) map server 3) postgis Now I want load 3D models on my map and globe. Lots of ...
1
vote
1answer
169 views

3D OSM buildings seems to be floating and shifted after adding terrain effect in Cesium

I had made a 3D view of the osm buildings using cesium. In which i had added a terrain effect using the standard cesium terrain provider as below var viewer = new Cesium.Viewer('cesiumContainer'); ...
1
vote
1answer
67 views

Free Digital Elevation (Terrain) Model of Europe or Germany

Is there any free (or not expensive) source of Digital elevation model of Europe or Germany with the resolution of 10 meters or better and vertical accuracy of +-5m or better?
1
vote
0answers
40 views

Creating equirectangular projection from 3d spatial model?

Apologies if this is not the right group for this question, but I think there may be people here who can help. (I'm open to suggestions for better places to ask.) I have a program that contains a ...
1
vote
0answers
65 views

Creating Dynamic 3D Buffers in ArcGIS Pro

I am currently using ArcGIS Pro to model WiFi router signal distribution and I would like to use buffers to display them in a 3D format. I have used the Buffers 3D tool to create spherical buffers, ...
1
vote
0answers
72 views

3D tool for a visual analysis

Given a 3D mesh I need to visualize and analyze properties and elements generated from the object such as: tensors coplanar/similar elements ( coplanar faces, aligned vertices, etc etc, 3D geometry ...
1
vote
0answers
518 views

How to import 3D geometries from DXF, VRML or X3D into PostGIS 2

we plan to develop a webbased 3D GIS using PostGIS 2 and GeoServer with a W3DS. The architecture works fine, but i have problems to import 3D geometries into PostGIS. The geometries come from AutoCAD ...
0
votes
1answer
136 views

How to add 3D features in Online ArcGIS (Story Map)

How to add 3D features in Online ArcGIS (Story Map) - I created the 3D layers / features using ArcMap Desktop and ArcScene I'm a student and a newbie looking for detailed information.
0
votes
1answer
26 views

Can targets placed on the facades of a building be used to increase the accuracy of a point cloud of a building generated from Drone/UAV/UAS imagery?

Can targets (used for registering point clouds) mounted on a building be used to increase the accuracy of a point cloud generated from UAV imagery?
0
votes
1answer
194 views

Is it possible to show 3d models using QGIS?

I can show vector layers from PostGIS using QGsMapCanvas and QGsVectorLayer in my standalone application. But now I need to show 3d models, for example 3dmax or sketchup, of some buildings over vector ...
0
votes
0answers
13 views

3ds Max file of a cityscape import into ArcGIS

I imported a 3ds Max file into ArcGIS Tools/3D Analyst toolbox/Conversion toolset/from File toolset Coordinate System(optional) I use the given projected spatial coordinates but the file is drawn in ...
0
votes
0answers
21 views

Contouring and rendering bathymetric & other attributes in QGIS

I wish to visualise (2d & 3D) and contour point sampled bathymetric and other associated attribute data (biovolume and bottom hardness) in QGIS. The source data files are CSV files consist of lat/...
0
votes
0answers
12 views

How ArcScene import collada to multipatch?

I want to know how ArcScene creates triangles, triangle strips, triangle fans and rings as in the attaching picture. What is the rule or algorithm that it uses?
0
votes
0answers
26 views

City engine web scene (large model)

I have a tag bit of a problem I made a 3d model of a city (about 21000 models) and using the city engine web scene viewer from Esri is slow and eats up a lot of resources unfortunately (and I'm ...
0
votes
0answers
142 views

What are the top 5 file types for 3D model?

I don't know much about GIS but I'm investigating a project that requires a 3D model of a hilly large town (town centre, suburbs, golfcourse, etc.). I'm not certain which file-type of these ...