Messages

1

General / Re: exporting point cloud - coordinate system

« on: July 24, 2019, 01:52:31 PM »

the camera coordinate system in the settings is WGS84 (EPSG::4326), with the long, lat and altitude imported with the images - the altitude is recorded as 44m although the flight was conducted at 60m above surface

2

General / Re: exporting point cloud - coordinate system

« on: July 24, 2019, 12:43:59 PM »

Hi Alexey

I'm still having issues with the exported point cloud I'm afraid

The x/y cords are still around a metre out even though control points have been used and the z values are nowhere correct - the exported ground values are approximately -60m, whereas the correct OS z value should be around 30m

any advice appreciated
thanks

3

General / Re: exporting point cloud - coordinate system

« on: July 23, 2019, 11:05:54 AM »

thanks for the speedy response, will try this

4

General / Re: exporting point cloud - coordinate system

« on: July 23, 2019, 10:33:25 AM »

thanks, got the file and exported

are there settings in the CAD software i can tell my colleagues to use when opening the file which avoid the problem of the results interpreting X, Y, Z values as similar units - or does exporting in code 7405 fix this?

thanks

5

General / Re: exporting point cloud - coordinate system

« on: July 22, 2019, 06:47:12 PM »

thanks - is the page and if so which version should i download?
https://www.ordnancesurvey.co.uk/business-and-government/help-and-support/navigation-technology/os-net/formats-for-developers.html

6

General / exporting point cloud - coordinate system

« on: July 22, 2019, 05:04:45 PM »

I'm a new user of Agisoft and am having issues with the export of a point cloud and the correct coordinate system.

The point cloud and model (of a building) have processed fine as far as I can see, including adding 4 control points measured using the OSGB coordinate system. The images were taken by drone using the WSG84 coordinate system.

The point cloud needs to be analysed in CAD based on an OSGB coordinate system, however if I export to OSGB the result is a meaningless straight line rather than the building; if i export to the local coordinate system it doesn't tie in to OSGB (I don't have access to the CAD as the model is being analysed by someone else).

Is there anything I should be doing to avoid this?

Thanks in advance