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Ascending Mt Xue Tour by Steven Ho

January 7, 2016

We have featured the work of Steven Ho a number of times in the past. He makes excellent Google Earth tours that really show off the capability of Google Earth’s Tour features. We have seen him do a variety of animations in Google Earth Tours, including the fireworks animation we show each New Year’s Eve, various marathons or running events, such as the tour of Scott Jurek running the Appalachian Trail and my personal favourite – Flying around with Blue Magpie Tea in Taiwan.

Today we are showing you his latest creation, which involves animating multiple paths at the same time, something he says he has not done before. Steven was inspired by this video created by the NCKU Mountaineering Association showing the routes of hikers that ascend a mountain in different groups and meet at the summit. The video shows an animation of the routes, made by overlaying an animation created separately and then overlaid on a static background image from Google Earth. Steven thought it would be much better to do it in Google Earth using its Tour feature. The result is these two Google Earth Tours:

An animation showing the groups’ routes to the summit of Mt. Xue

An animation outwards from the summit along the main ridges. This second animation is not the route used by the hikers but was to further demonstrate the simultaneous multi-route animation concept.

Read more about it on Steven’s blog

Filed Under: Site News Tagged With: Google Earth tour, steven ho

Seeing imperfect orthorectifcation in Google Earth imagery

October 20, 2015

Yesterday we talked about orthorectification and how it is imperfect, especially when using an inaccurate terrain model. We thought we would have a look at the effect using historical imagery. We used a variation on two JavaScript tools we have created in the past for animating historical imagery using the Google Earth plugin and using Google Earth Tours. This enabled us to create tours which animate only a selection of historical imagery and exclude lower quality images. Because Google Earth does not allow us to play the tours at a reasonable speed (it omits images), we recorded the tours and then sped up the recording.

We chose three locations that we know have significant elevation variation as well as a lot of satellite imagery. They are Devil’s Peak, Cape Town, South Africa, Rio de Janeiro, Brazil, and Calama, Chile.

If you look carefully, you can see that some locations move more than others.

The buildings at 1 and the bridge at 2 seem to move much less than the surrounding imagery. This suggests that the terrain model for these locations is closer to the true altitude than for surrounding areas.

You can download the Google Earth tours we used to create the video here.

Filed Under: Site News Tagged With: animation, Google Earth tour, historical imagery, measure

Mountain Visions Google Earth tours

January 20, 2015

Prompted by our series showcasing uses of the Google Earth plugin, Gary Grimm of Mountain Visions has shared with us some Google Earth tours that they have created. You can find a complete gallery of their tours here which includes a mixture of tours to download and view in Google Earth, tours to watch using the Google Earth plugin, and tours that have been recorded and can be viewed as an online video.

Although we generally prefer to download tours and view them in Google Earth, using the plugin to display tours can have a number of advantages:

  • You can place descriptive information in the web page around it, including links to further content – although most of this can be done within the tour.

  • To some degree it protects your content from copying.

  • It is easier for the user as they do not have to download the tour and open Google Earth.

Below are some of the best tours from the Mountain Visions collection presented using the Google Earth plugin. To view them using the plugin, you will need the plugin installed and a compatible browser. It may take some time to load the tours, so be patient and wait for the ‘play’ button to appear in the bottom left hand corner of the plugin.

Tour of Potential CuMO Mine – May 2012
(or download the KMZ to view it in Google Earth.)

Prince of Wales Island Watershed Restoration Projects, 2006-2011
(or download the KMZ to view it in Google Earth.)

Tour of Mores Creek Watershed Tour, October 2013
(or download the KMZ to view it in Google Earth.)

Boise River at High Water June 3, 2011
(or download the KMZ to view it in Google Earth.)

CuMo Mine
A screenshot from the CuMo mine tour.

Filed Under: GE Plugin, Tours Tagged With: Google Earth plugin, Google Earth tour



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