延时挖掘从互联网的照片 [SIGGRAPH 2015年]We introduce an approach for synthesizing time-lapse videos of
popular landmarks from large community photo collections. The
approach is completely automated and leverages the vast quantity
of photos available online. 第一次, we cluster 86 million photos into
landmarks and popular viewpoints. 然后, we sort the photos by
date and warp each photo onto a common viewpoint. 最后, we
stabilize the appearance of the sequence to compensate for lighting
effects and minimize flicker. Our resulting time-lapses show diverse
changes in the world’s most popular sites, 像冰川的减少,
正在建造的摩天大楼, 和改变路线的瀑布.
Water Balloon FULL OF MURCURY –; 科学中弹出! 更详细的画面 6 磅. 汞气球流行视频显示从汞的有趣飞溅,因为它击中在浴缸底部. 我添加了一些只是为了好玩的声音效果. 汞的体积比水重近 14 倍 (又名 "密度") 和的密度比铅.
- 不要在家里尝试这个- 汞是危险的在高暴露水平.