Exporting a sparse point cloud after step 1

PIX4Dmapper PIX4Dmapper Questions/Troubleshooting
1

Hello,

For my use case, the computation time is critical and should be reduced as much as possible. But I don’t need a dense point cloud: the sparse point cloud displayed after processing step 2 is sufficient.

Is it possible to export the sparse point cloud before running step 2?

I tried to dig in the text files stored in 1_initial , but I didn’t find anything.

Here it says that the tie points coordinates are saved in various files (such as the Bingo file) but it is only their 2D coordinates on the images. I need the 3D points with x,y,z coordinates in the project coordinate system.

https://support.pix4d.com/hc/en-us/articles/202977149#label61

Your help will be much appreciated!

 

2

Hi Raffael, 

I think that article describes what you are looking for: How to export the Automatic Tie Points

Out of curiosity, for what kind of application are you using the sparse point cloud (automatic tie points)? 

Cheers

3

Thanks Pierangelo for your answer!

In some instances the sparse point cloud seems to be useful to check the rough geometry of a place and fit a model.

Cheers!

4

You’re welcome Raffael!

Okay, sounds cool. Feel free to post some of your models or use cases in the Hall of fame :slight_smile: It would be interesting to learn from such applications!