Leica BLK360 也加入3D 點雲掃描的行列，並且已經開始出貨了

https://lasers.leica-geosystems.com/blk360

以下是官網的關於精確度的說法:

A laser scanner calculates 3D XYZ coordinates using 3 measurements - a horizontal angle, a vertical angle and a slope distance from the scanner center to the measured point. This is refered to as a "polar" measurement. Add a bit of trigonometry and you quickly come to XYZ or Cartesian coordinates.

In simple terms, the 3D accuracy of a laser scanner is affected by the accuracy of the polar measurements. The BLK360 has 3D point accuracies of 6mm @ 10m and approximately 8mm @20 m (1/4" at 33' and approx 1/3" at 66' respectively), 1 sigma. This makes the BLK360 a perfect as-built measurement tool, especially when you consider you can collect up to 360,000 measurements per second AND full HDR imagery at the push of a button.

Think of it as bringing the jobsite back to the office.

polar measurements 是極座標測量的意思，極座標就是以角度與距離描述兩點的關係。

當然這已經相當精準了，但對於某些工程種類還是不足。

但點雲掃描已經成為新一代測離的利器了，希望在競爭下價格能夠在低一些。這種裝置如果能整合水平、垂直、測距、放樣點射點就更好了。