1984 to 2016, Earth, world, you were in town, what happens?

Beijing building more, way more verbose, constantly expanding outward; reclamation in Dalian, into land of the sea ... ... changes in cities around the globe for 32 years, is now available at a glance.

Within the five-ring changes in Beijing

Dalian change, you can see the land and sea expansion

Google timeline features recently published update of the largest in recent years.

Three years ago, Google first launched this feature, users can see the changes in 1984 to 2012 in all regions on Earth, today, Google added since 2012 Earth image information.

Users only need to access Google Timelapse Web site, and on the top left of the search bar that you want to explore the city or region name, you can see the dynamic image of the past 32 years. For example, you could enter "Beijing", you can also enter ", Dongcheng District, Beijing", you can try entering a shop near your home to another name, may also be recorded.

Shantou a 32 years of changes in rural areas, some farmland into construction zones

Each year, Google will pass its platform Google Earth satellite image processing engine, 5 million satellite photo filter out up to 3 trillion pixels in the image, and then selected highest quality preserved in these photos, there are a lot of accumulation, coding dynamic image block.

This updated four years of satellite images of the Earth, from a sentry 2nd and Landsat 8 satellites. Dynamic actions such as zoom in and zoom out of the image can be completed smoothly, you benefit from Carnegie Mellon CREATE lab time technology.

1984年至2016年，地球，世界，你在的城市，发生了什么变化？

北京市楼多了，路也多了，密密麻麻的，不断向外扩张；大连市填海，海洋成了陆地…..32年来的全球各个城市的变化，现在可一览无余。

北京五环以内的变化

大连市的变化，可以看到陆地向海洋扩张

Google时间线功能近日发布近年来最大规模的更新。

三年前，Google第一次上线这个功能，当时用户可以看到1984年到2012年地球上各个地区的变化，如今，Google新增了2012年以来的地球图像信息。

用户只需要进入Google Timelapse网站，并在左上角的搜索栏里输入想要探索的城市或地区名字，便可看到该地过去32年来的动态变化图像。例如说，你可以输入“北京”，还可以输入“北京市东城区”，你也可以尝试输入你家附近的小卖部店名，可能也会有记录。

广东汕头市某个农村32年的变化，部分耕地变成建筑区

每年，Google都会通过它的卫星图像处理运行平台——Google地球引擎，把500万个卫星图像中像素点高达3万亿的照片筛选出来，然后再在这些照片里选出质量最高的保存下来，有了大量积累后，再编码做成动态图像块。

此次更新的地球四年卫星图像，来自于哨兵2号和 Landsat 8卫星。动态图像的放大与缩小等操作能流畅完成，则得益于卡内基·梅隆CREATE实验室的时光器技术。