Forum

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - mfran2002

Pages: [1] 2 3 ... 5
1
General / Re: calculate NDVI from ortophoto
« on: September 30, 2016, 04:15:05 PM »
Hi Alexey and thank you again for your help!

excuse me for my limitations but I can't find this utility. I use Photoscan version 1.2.4

May you please guide me to that function? If possible also with an helpful  screenshot...

 ;D

2
General / calculate NDVI from ortophoto
« on: September 29, 2016, 04:40:46 PM »
Hello,
I can create an ortophoto using Photoscan.

Is it possible to get NDVI map from that ortophoto using Photoscan? If so, how can I?

thanks

3
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 19, 2016, 04:06:57 PM »
You are right Alexey,
but it is very difficult to frame correctly without monitoring what you are framing...
There is no display or some other way to check what the camera is framing...

I will try to repeat my shoots and then I will send you again for your check

thanks!

4
General / Re: photoscan export dense cloud points: what kind of coordinates?
« on: September 13, 2016, 04:07:16 PM »
thank you very much stihl!

5
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 12, 2016, 10:12:29 PM »
Hello Alexey,
I have tried anyway to generate xml calibrating files from Lens.

May I send to you the shoots (together with lnz, xml and log files) so you can tell me if it is all ok or not?

thanks a lot!

PS: via wetransfer as usual...  :D

6
General / photoscan export dense cloud points: what kind of coordinates?
« on: September 12, 2016, 07:09:54 PM »
Hello,
I have to export dense cloud points from photoscan.

I found several way to export points (XYZ txt, ASCII pts, WaveFront OBJ), but what are the differencies between all of them?

thanks!

7
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 11, 2016, 11:54:24 AM »
sorry but then for what should I have to use LENS?

I thougth it must be used for calibration of the cameras...

if not, for what else?

8
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 10, 2016, 05:51:36 PM »
sorry Alexey, รน
I didn't understand your last consideration, may you please explain me again?

and another doubt: what is "autocalibration in PhotoScan"? How can I do it?

sorry again, limit of mine...  :-\

9
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 10, 2016, 05:37:03 PM »
great!

someone told me that it was essential to have only the board, recommending not to frame the edges.
And since I can not always take the photo without frame the edges I thought to cut them.

The distance of the photos from the board should always be the same (more or less), right?

10
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 10, 2016, 04:41:55 PM »
due to the fact that I didn't see what I was framing I had to crop the images, and I cropped them manually

this is also (maybe) the reason why they have different resolution

because I had to stay close to avoid taking the edges, the pictures are not so sharp (I guess)

11
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 10, 2016, 04:12:50 PM »
have you some suggestion for correctly taking photos?

my procedure into LENS is very simple:

1. add photos
2. tools -> calibrate

is it correct?

12
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 10, 2016, 03:58:00 PM »
mmmm..... I understand

my problem is that during the shoots I cannot see the frame.
I go blinded :-/ and it is very difficult

I try to stay at the same distance during the shoots, and I try not to take the perimeter/edges

but it is not so simple

13
Camera Calibration / Re: Lens to calibrate Sequoia
« on: September 10, 2016, 03:33:03 PM »
each photo is more than 512KB may I send you an email?

14
Camera Calibration / Lens to calibrate Sequoia
« on: September 09, 2016, 08:51:35 PM »
Hello,
I'm trying to calibrate my Sequoia using Lens but, during the calibration procedure, I receive log messages like the following :

Code: [Select]
Calibrating lens...
corners hessian: 4.022 non-maxima: 0.041 correspondencies: 0.217 refine: 1.666
At least 3 photos with properly detected corners are required, calibration skipped
corners hessian: 4.091 non-maxima: 0.04 correspondencies: 0.168 refine: 1.619
At least 3 photos with properly detected corners are required, calibration skipped
corners hessian: 4.687 non-maxima: 0.045 correspondencies: 0.201 refine: 1.8
At least 3 photos with properly detected corners are required, calibration skipped

What it means? What is wrong?

Thanks a lot for your help

15
Feature Requests / Re: How to use Sequoia calibration target with Photoscan
« on: September 07, 2016, 05:37:47 PM »
ok, thanks for your info.
Do you know when it could be available?

Pages: [1] 2 3 ... 5