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Author Topic: export tie points as XYZ  (Read 3630 times)

jason.liu

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export tie points as XYZ
« on: August 31, 2015, 10:45:04 AM »
Hi,

Is there any way I can export tie points in Photoscan as xyz in world coordinates instead of xy in image coordinates? I notice that I can export both sparse and dense cloud points as xyz in world coordinates. So I thought I can do the same for tie points. But I just can't find the function to do so.

Thanks in advance for any help.

Cheers
Jason

Alexey Pasumansky

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Re: export tie points as XYZ
« Reply #1 on: August 31, 2015, 12:24:28 PM »
Dear Jason,

Sparse cloud actually consist of the tie-points used for the image matching.
Best regards,
Alexey Pasumansky,
Agisoft LLC

jason.liu

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Re: export tie points as XYZ
« Reply #2 on: September 01, 2015, 07:07:09 AM »
Hi Alexey,

Many thanks for your reply.

Is there any way I can find out which point in the sparse cloud correspond to which tie point?

Cheers
Jason

Alexey Pasumansky

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Re: export tie points as XYZ
« Reply #3 on: September 01, 2015, 02:00:19 PM »
Hello Jason,

Each point of the sparse cloud is a tie point obtained for image matching procedure and used for the scene structure estimation.

What information to you need to export actually? In principle it is possible to customize the output using Python scripting.
Best regards,
Alexey Pasumansky,
Agisoft LLC

jason.liu

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Re: export tie points as XYZ
« Reply #4 on: September 02, 2015, 04:40:28 AM »
Hi Alexey,

I would like to know the xyz world coordinates for each tie point.

In the tie point export file (orima format for example), there is

[image label], [tie point ID], [tie point image x], [tie point image y], 0, M

It would be great if there is something like

[image label], [tie point ID], [tie point image x], [tie point image y], [tie point world x], [tie point world y], [tie point world z], 0, M

Or alternatively in the sparse cloud point export, there is information to link to the tie point information for each sparse cloud point.

How would i achieve that using Python scripts?

Many thanks for your help.

Jason

fjgarciam

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Re: export tie points as XYZ
« Reply #5 on: October 14, 2020, 12:15:38 AM »
How to do it on phyton script? thanks!!