谷歌是如何做地图的? 街景光标“正在关注”
在 Google 地图街景中,当您将鼠标悬停在场景的不同部分时,光标会变成矩形/椭圆形。 例如:
当您将光标移到建筑物上时,它会“拥抱”墙壁。 这并不只是沿着十字路口那么简单,因为如果您继续向左行驶,您可以看到当它碰到建筑物的不同面时角度发生变化。
他们是否会进行某种图像分析来识别建筑物的面孔,或者在拍照时进行某种激光测距仪,然后将其与图片结合起来?
In Google Maps Street View your cursor turns into a rectangular/oval shape as you mouse over different parts of the scene. For example:
As you move the cursor over the building it "hugs" the walls. It's not just as simple as following the intersection because if you continue on to the left you can see the angle change as it hits different faces of the buildings.
Do they do some sort of image analysis to identify faces of the buildings or do they, as they take the picture, do some sort of laser range finder and then later combine it with the picture?
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他们确实使用激光测距扫描仪。 根据 Google 经纬度博客:
They do use laser range scanners. And according to the Google Lat Long Blog: