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Posts Tagged ‘Google Earth’

Windmills (wind turbines). Geovisualization live!

2009/08/10

I will do my best to build a 3d scenario incluiding a few wind generators located very close to Pancorbo Cliff, North of Spain, about 320 km from Madrid. As usual, I started getting a model from 3D warehouse and included inside my google sketch up session… after that it was just placing it in my GE scenario… That’s it!. Now a little bit of literature: 

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The most modern generations of windmills are more properly called wind turbines, or wind generators, and are primarily used to generate electricity. Modern windmills are designed to convert the energy of the wind into electricity. The largest wind turbines can generate up to 6MW of power (for comparison a modern fossil fuel power plant generates between 500 and 1,300MW).

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With increasing environmental concern, and approaching limits to fossil fuel consumption, wind power has regained interest as a renewable energy source. It is increasingly becoming more useful and sufficient in providing energy for many areas of the world.

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One area where turbines have become feasible is in the Midwestern United States, due to great amounts of wind.

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Source: Wikipedia

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Hope you liked it.
Alberto
BA Geography
MSc GIS and Remote Sensing
GIS Technician
albertoconcejal -at -gmail.com

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Getting textures from Google Maps – Street View

2009/08/05

I this post I am trying to show you how easy is adding a building to your scenario using textures from Google Maps (Street View). You have to know a little bit about Photoshop and layers and these stuff but it’s pretty easy thou…

First step, capturing my screen…OMG!!! there’s a tree in the middle of the building I want to model… there is no need to worry about it… Photoshop deals with it very well!!.

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And after taking these three pictures I finally get this one (Thank you Photoshop!!!)… I could have done it much better but this is just for you to know the way to do it… its not that bad thou!

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Second step: Start modelling… Im not teaching you how to model but I can tell you it’s a piece of cake… just try it. Of course I am using my beloved Google Sketchup. I get my current GE’s view:

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Defining XYZ axes, first blocks… just starting dudes!…

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Applying textures I had already got from Adobe Photoshop…

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And after a few minutes modelling this is what I finally get:

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Hey, It looks like more or less realistic!!!

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Third and last step: Let’s go to Google Earth…

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These two blocks of buildings are very close to where I live here in Madrid. Vicálvaro is 10 minutes to Madrid downtown by car… It’s far away but now it’s in your computer…cool, isn’t it?.

Alberto
BA Geography
MSc GIS and Remote Sensing
GIS Technician
albertoconcejal -at -gmail.com

WMS in Google Earth.

2009/08/04

I have thought there is something very interesting maybe you guys have never tried… using your Google Earth sesssion not just for navigating, finding your house or the place you are going on holidays to… If you use the WMS protocol to show your map over your 3D scenario you are going to add a little bit more of interest to your Google Earth… Lets add a Corine Land Cover Map over my 3D map…but, What is WMS???, What is Corine Land Cover???. Im not even trying to tell you by myself, I am opeining my WIKIPEDIA to tell you, hehe…

WMS

A Web Map Service (WMS) is a standard protocol for serving georeferenced map images over the Internet that are generated by a map server using data from a GIS database. The specification was developed and first published by the Open Geospatial Consortium in 1999.

CORINE LAND COVER

CORINE (Coordination of information on the environment) is a European programme initiated in 1985 by the European Commission, aimed at gathering information relating to the environment on certain priority topics for the European Union (air, water, soil, land cover, coastal erosion, biotopes, etc.). Since 1994, the European Environment Agency (EEA) integrated CORINE in its work programme. EEA is responsible for providing objective, timely and targeted information on Europe’s environment.

This is the Official Corine Land Cover key map.

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This is the area I would like to know more about, Chiclana de la Frontera in Cádiz, SW of Spain.

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This is once we get connected via WMS to the place where you can get those maps (http://www.idee.es/wms/IGN-Corine/IGN-Corine?). By the way you can search on the internet to get more maps… you just have to go to google and search for ‘wms maps’ and you’ll be able to find them. This is a Corine Land Cover Map with information from year 1990.

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This is a Corine Land Cover Map with information from year 2000.

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This is what we find after comparing both images… I have compared them using Photoshop CSX but you can go further and use global Mapper, ER Mapper or ArcGIS… As you can see, those areas highlighed are the areas with changes (very small in this case)…

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More geographic post to come very soon!!!

Alberto

Georreferenced pictures. Geovisualization live!

2009/08/04

You find a picture you like and convert it to 3D in a few steps:

Step1: Find a picture you like:

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Step2: Now Open your Google Earth and go to Tools/Add/Photo:

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Step3: You have it with the same perspective… you can even navigate inside the picture… This is just within a 3D model, now imagine if you have pictures from your trips… you can share their position with your friends just saving these files into a KML!!!… We’ll check it soon!.

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Modelling Madrid 3D. Geovisualization live!

2009/07/29

And now, Let’s start with a 3D model… this is not very simple thou…

First of all we have a flat /2D scenary at GE, no much more than 50 cm of resolution. The place is very close to Madrid downtown, a very big neighborhood called Moratalaz…we will find there two very big towers of about 50 meters high:

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As I said in the last post now we first open SU (Sketch-up by Google) and click on ‘get current view‘… This is more or less what we will find:

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Let’s start modelling…I’m not telling you here the way you should model it… I’m just telling you that It is a PIECE OF CAKE!!!!!!!… This model has thousands of pieces but I just spent about 15 hours in modelling them all…

I have used something called ‘components‘… this means that you -for instance- design a floor and later on you can repeat it as much as you want… all you change in that floor will be repeated in the rest of them… didn’t I tell you that it was EASY???… Let’s stop saying nonsense and check it out!

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Now let’s texture it!. As this is not an architectural model, this is just a building we want to visualize in our 3D scenery (now you know something else about geovisualization, nothing to do with Architecture as you can deduce from it)… we have just used a few textures (less than 5, more than 2…a few! I told you!).

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Now that we have just added textures all we have to do is clicking on ‘place model‘ in our SU:

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And finally switching to our GE to check it out…

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Exactly georreferenced at 40°24’21.08″ N – 3°37’30.22″ W…

Do you like it?. It’s not that difficult isn’t it?. Do you dare to do something similar in your country… I’m sure yes!.

Alberto
GIS Technician.
BA Geography, MSc GIS.
Multimedia designer

albertoconcejal -at- gmail.com

Modeling from scratch. Geovisualization live!

2009/07/29

This is what we first have, a low resolution image taken from Google Earth (GE) visualization engine. This area is a small town within La Rioja, NE of Spain, about 300 km from Madrid. The town is called Muro en Cameros.

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First of all we have to find a better resolution imagen beacouse is absolutely impossible geting the shapes of the buildings without a better one… I find it in the SIGPAC website (you can find a link by your right side->).

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Let’s see the difference between these two scenaries…

Before:

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After:

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Now, Let’s start modelling!!!!!. We open our Google Sketch-up (SU)…

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We should clic on this icon to get our current GE view… Very easy as you can see… 

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Now let’s start modelling… Isn’t it easy?????.

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we will check it very soon!

Alberto

albertoconcejal-at-gmail.com

Modelado 3D. Escenarios subterráneos en red de alcantarillado de varias ciudades españolas

2009/07/27

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Definición de flujos de trabajo en 3D

2009/07/27

Protocolos de creación de escenarios en 3D, tratamiento de imágenes satélite, creación de modelos digitales de elevaciones -MDE- y del terreno -MDT- además de modelos en 3D. Google Sketchup, Google Earth, Global Mapper.

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Personalización de KML desde Photoshop

2008/07/21

Edición de Video. Visualización cartográfica.

2008/07/21