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Author Topic: Dense point cloud computation is Time / CPU consumming  (Read 1970 times)

j.seinturier

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Dense point cloud computation is Time / CPU consumming
« on: April 23, 2015, 11:39:02 AM »
Hello,

I'm using photoscan to make dense 3D model of a complex environment (an underwater rock with cavities) and i'm facing huge time and CPU consumming process.

My original photoscan project is made of a chunk of 5100 aligned photographs (taken from an AVT Prosilica GT660 6576 × 4384 camera: https://www.alliedvision.com/en/products/cameras/detail/6600.html)

When i'm trying to make dense point cloud of my chunk, the processing is quite long (90 hours already passed, 19% done and still 359 hours to go).

The set-up of the dense point cloud computatio is:

  Quality: Medium
  Depth filtering: agressive

* The computer that run photoscan is a super-micro type with 2 xeon processors, 512 Gb of RAM and a Geforce GTX 980 graphic card.


The depth map creation step was long bu reasonable (40 hours) but now, the filtering of depth maps is started from 90 hours and is achieved at 19% with a remaining time of 350 hours.

Is anyone can explain why the densification time is so long ?

Do i set a bad parameter ?

Thanks a lot,

Julien

Alexey Pasumansky

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Re: Dense point cloud computation is Time / CPU consumming
« Reply #1 on: April 23, 2015, 11:53:47 AM »
Hello Julien,

Could you please post a scrennshot of the model overview with the camera positions?

Complex structure of the surface and excessive overlap may be a reason of the long processing time.
Best regards,
Alexey Pasumansky,
Agisoft LLC