Hi !
I am planning to create a 3D model using lidar data and picture a took from a UAV. with Bentley context capture.
I want to have my final 3D model geo referenced
I will have :
- A .las file containing my lidar data. Lidar points are projected in a local frame.
- Picture files
- A .csv files with the coordinates of each picture in LLA and is orientation (omega, phi, kappa)
- A .csv file with the UAV trajectory in LLA
1 - Do I need to convert all my data sets (lidar, pictures position and UAV trajectories) in a common coordinate system ? Like a local coordinate or ECEF ? Can Bentley do it for me ?
2 - How Bentley know in which frame my lidar data are ?
3 - When I use the option "import point cloud from a mobile scanner" I can specify the spatial coordinate system, does that coordinate system should be the same for my .LAS file and my trajectory ?
4 - How Bentley use the lidar and the picture to create the 3D model ? Does it simply do a RGB lidar colorization ?
Thank you,
我雷達數據是只有e57 並沒有las檔案 是否可以結合行拍照片讓照片貼附紋理在e57檔案所產生的模型
可以,你需要把拍摄的照片做空三处理 然后手动配准控制点,让连接点和雷达点云融合配准,就可以着色到模型上。
是要先丟航拍照片產製出3MX 再匯入E57檔案嗎我丟航拍照片及E57無法繼續跑建模
ContextCapture support E57 for input only. You cannot import a 3MX to E57. What you may be able to do is produce a LAS file in ContextCapture and then use a 3rd party application to convert this to E57
所以必須用航拍照片轉成e57檔案 用航拍轉出來的e57檔案跟雷達掃出來的e57一起跑的意思嗎?
https://www.youtube.com/watch?v=JhqAntx3xPU 這部影片為何可以使用航拍照片及e57檔下去跑呢
請問官方網站是否有範例,可以利用範例檔案(照片、E57檔)跑出官方網站的成果。