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Google introduced Google Earth and Google Maps several years back to give users a better and more comprehensive view of the ground below. Now the Google has improvised its satellite images by introducing greater detail and sharpness in its images. So users have all the more reasons to visit the Google Earth once again.
For checking out the difference in clarity, below are the images, before and after the update.
Earlier the Google was using Landsat 7 for eliminating striped artifacts, clouds and other atmospheric effects from Google Earth images. However the images Landsat 7 captured were affected by a hardware failure that resulted in diagonal gaps of missing data, they were still the best images available at that time. Now the Google engineers have come up with newer, crispier imagery from NASA and the U.S Geological Survey’s Landsat 8 satellite.
As announced by Google on its Google Maps blog,”with the new satellite, one the biggest problem of images getting ruined by cloud coverage can be solved now, as it captures images with unprecedented frequency that is capturing twice as many images Landsat 7 does every day.” For this the new processing technique used by Google is called “freshest global mosaic to date”.
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In comparison to earlier images , the new version of Google Earth imagery is also cloud-free, because of mining nearly a petabyte of data, which is more than 700 trillion pixels, or 7,000 times more pixels than the number of estimated stars in the Milky Way.
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