Drone2Map Orthoが誤ったZ高さを表示しています。

Anonymous User

皆さん、こんにちは、

同僚がいくつかの画像の2Dオルソを作成しようとしました。Rapid機能を使用すると、データは正しいZ（高さ）にあります。しかし、より詳細な2Dオルソオプションを使用し、標準設定だけを使うと、彼のオルソとベースマップが突然40メートル高くなってしまいます... 

なぜこれが起こるのか、何か考えはありますか？

Bill_VS

If it was flown with a DJI drone, they tend to use the wrong datum for elevation, and can be off by more than 50m vertically. In Pix4Dmapper, I correct this by editing the imagery input table (the one with the EXIF values). I don't use Drone2Map, but I hear it was based on the Pix4D engine, so it might have a similar interface at the beginning of the orthorectification process. You can use a single value to approximate height, or If you want to get more accurate, you could take one ground shot before takeoff, and subtract the AGL elevation of that ground shot (should be 0) from all subsequent values. I've found the approximation method works just fine for my purposes, though.