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Messages - madekwe

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1
Hello,

From my experience it depends on your GSD, with a low GSD < 1.5 cm I recommand moderate.
The best solution is to test the different parameters on a small area using the region bounding box


2
General / Re: Agisoft PhotoScan 1.3.0 pre-release
« on: February 07, 2017, 08:55:21 PM »
Hello,

What is the new function ?

== > Added WIRIS thermal image format support.

Is there a thermal image alignment option is the new version ?

Thanks

3
General / Re: heat imaging and photoscan
« on: January 27, 2017, 04:38:50 PM »
Hello frank,

I have the same kind of problems. I would like to know how you warp the RGB images with the IRT images from FLIR ?

thanks a lot,

Simon

4
Bug Reports / gap in the vegetation dense cloud from RGB-UAV survey
« on: January 26, 2017, 06:22:59 PM »
Hello,

I guess this is a problem you have allready encountered.

We are flying over a maïze field, the vegetation cover is then really important. The ground resolution is about 0.6 cm and the overlapping really high, as you can observe in the report (attachment)


We then reconstruct the dense cloud using the medium option and moderate filering. We compare the same area using the high and moderate (respectively left and right in the attached image). We have some gap in the high reconstruction... 

As my area of interest in the maize and I would like to have the best height estimation posible ! DO you have any recommandation in terms of configuration/ option ? Or even flight configuration for my purpose ?

Thanks a lot

   



 



5
General / Re: Multispectral project with different focal
« on: November 17, 2016, 02:17:35 PM »
Ok ! and when photoscan deal with multiplane chunk how photoscan deal with the co-registration of the images for one trigger ?

Is there an alignment for every plane ?

6
General / Re: Multispectral project with different focal
« on: November 17, 2016, 01:42:45 PM »
When you mean properly aligned with each other, you assumed that images have exactly the same orientation ?
Because this is not the case for multispectral images (like Micasense, Airphen ...). There is small offset, images in the same trigger are not properly co-registrated..

7
General / Re: Multispectral project with different focal
« on: November 17, 2016, 01:31:28 PM »
yes, that was my conlusion ! thanks to confirm it.

8
General / Re: Multispectral project with different focal
« on: November 16, 2016, 08:39:34 PM »
thanks for your quick reply,

I test this approach, and fix the fish eye as the master channel.

The 5 others bands (frame type) have very low overlapping and I have very bad results on some CPs (others are ok)
Placing the GCPs for in the fish-eye images is quite imposible...

On an other hand, i test a project with one chunck ans two sensors : a fish eye and a normal frame (both in the green band), the accuracy of the alignement is really good. The problem is that I have the orientation of juste 2 sensors. But using a melling fourier transform I find the translation rotation and scaling between the different sensors.

So i think I'll give up the multispectral project.

What is exactly the master channel ? Its looks like it is not posible to do a multispectral project using different frames (fish-eye, normal, spherical .. ) Am I right ?

9
General / Multispectral project with different focal
« on: November 16, 2016, 07:57:21 PM »
Hi,

I have a 6 bands multispectral camera (triggering at the same time). 5 have normal frame, one is fish-eye. The idea is to fix the fish-eye band as the master channel in order to find the position of the cameras (normal band have no sufficient overlapping for an alignment)

It is posible ?

Thanks a lot.

10
General / Re: Agisoft for IR camera on UAV
« on: February 22, 2016, 09:26:09 PM »
I guess you give up ? :(

11
General / Re: Dense cloud at lower resolutions
« on: February 19, 2016, 03:21:10 PM »
Images are downscaled corresponding to the target quality selected:

    Ultra High - no scaling
    High - images are downscaled two times by each side
    Medium - downscaling four times by each side
    Low - eight times
    Lowest - sixteen times

12
General / Re: Agisoft for IR camera on UAV
« on: January 13, 2016, 02:19:30 PM »
Hello, is there a solution ? Do you need help or informations ?

13
General / Re: Agisoft for IR camera on UAV
« on: December 02, 2015, 12:08:42 PM »
Dear Alexey, do you have some results ?
Maybe I can help you on the camera characteristics ?

14
General / Re: Agisoft for IR camera on UAV
« on: November 25, 2015, 02:10:12 PM »
Thanks ! if you have any questions ...

15
General / Re: Agisoft for IR camera on UAV
« on: November 18, 2015, 06:19:04 PM »
Great idea ! thanks i sen the images to the support. I hope they 'll find a solution
best

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