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December 1, 2016 04:00 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/8rcwKGrnF0A/google-earths-timelapses-offer-a-32-year-look-at-earths-changing-surface
Google Earth's Timelapses Offer a 32-Year Look At Earth's Changing Surface
Google has partnered with TIME to release an improved version of Google Earth Timelapse that provides animated satellite imagery covering the past 32 years, from 1984 to 2016. In 2013, Google and TIME launched Timelapse with a time-lapse from 1984 to 2012. However, this time around the project uses the higher-resolution maps introduced back in June to provide a look that's more detailed and more seamless than in the past. ZDNet reports: The 10-second snapshots of Earth from space over 32 years captures urban sprawl, deforestation and reforestation, receding glaciers, and major engineering feats, such as the Oresund Bridge connecting Denmark to Sweden, or the spread of the Alberta Tar Sands in Canada. Google Earth engine program manager, Chris Herwig says it created the new "annual mosaics" by stitching together 33 images of the Earth, each representing one year. Each image contains 3.95 trillion pixels, cherry-picked from an original set of three quadrillion pixels. "Using Google Earth Engine, we sifted through about three quadrillion pixels, that's three followed by 15 zeroes, from more than 5,000,000 satellite images," Herwig said. "We took the best of all those pixels to create 33 images of the entire planet, one for each year. We then encoded these new 3.95-terapixel global images into just over 25,000,000 overlapping multi-resolution video tiles, made interactively explorable by Carnegie Mellon CREATE Lab's Time Machine library, a technology for creating and viewing zoomable and pannable time-lapses over space and time." The satellite images come from the NASA Goddard Space Flight Center and US Geological Survey. Since 2015, they also contain some data from the European Space Agency's Copernicus Program and its Sentinel-2A satellite.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/8rcwKGrnF0A/google-earths-timelapses-offer-a-32-year-look-at-earths-changing-surface
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