Messages

31

Bug Reports / Re: Build model 1.6.3. seems to stop after loading kernels

« on: September 22, 2020, 06:56:09 AM »

This time not at loading kernels but still not working.
Please open the attached log file.

2x Vega 64 rog strix
driver 20.4.2

Thank you!

32

Face and Body Scanning / Re: Best Camera Choices for a rig - budget cameras?

« on: September 16, 2020, 04:25:09 PM »

Thank you very much!

33

Python and Java API / Re: Use of pickPoint() in order to create marker

« on: August 30, 2020, 12:22:36 PM »

Thank you very much - not only for the code but also for the explanation in the code!
Works great!

34

Python and Java API / Re: Use of pickPoint() in order to create marker

« on: August 29, 2020, 03:04:12 PM »

Is there a possibility to calculate the distance of a camera to the model in z-axis using model.pickPoint function?

I'd like to calculate the point on the model under the camera and the distance to camera center.

Thank you!
 

35

General / Re: Measuring photogrammetry resolution

« on: August 27, 2020, 11:05:45 PM »

Metashape calculates the Pixel size (GSD?) for the build orthomosaic step. Does anybody know how the distance in this formula is calculated?
Is it the average distance between cam hight and hight of model points? Or something else?

Thank you!

36

Python and Java API / calculating ground sample distance (GSD) or ground sample resolution

« on: August 27, 2020, 04:38:15 PM »

Hello everybody!

Can someone please tell me how to calculate a ground sample resolution (mm/px)?
I have noticed, that Metashape gives out a resolution in the "build orthomosaic"-GUI, where it is called Pixel size (m).

The report of the model says "Ground resolution", but the calculated value is different.

I'm looking for the value to calculate an orthomosaic. Would be very nice if someone could help.

THANK YOU! 

37

Face and Body Scanning / Re: Best Camera Choices for a rig - budget cameras?

« on: August 27, 2020, 03:27:29 PM »

What type of cameras do you use with raspberries?
I've only found cameras with a few megapixels, but I didn't mess around a lot with rasp until now...
 
Thank you! 

38

Python and Java API / Re: Build Orthomosaic - Projection plane with markers

« on: August 25, 2020, 02:20:44 PM »

I have been able to calculate the model dimensions in x and y plane by looking through all the model vertices.
But the next step must have to do with some camera parameters. Please help with the calculation of the expected ortho dimensions (see post above).

Thank you!

39

Python and Java API / Re: How do you specify orthophoto width?

« on: August 24, 2020, 04:06:19 PM »

Would be very interested too! 
Haven't found a hint on how to read the mesh vertices x,y,z values.

Edit: Found it. (.coord)

40

Python and Java API / Re: Build Orthomosaic - Projection plane with markers

« on: August 24, 2020, 04:02:00 PM »

Hello Alexey,

I'm still wondering how the ortho size can be calculated as it is done in GUI (attachment).
Can you please give advice on how to calculate the value m/px and the estimated total size in px?

The python value is Orthomosaic.resolution

Thank you! 

41

Python and Java API / Re: Pixel size in orthomosaic generation

« on: August 24, 2020, 03:52:35 PM »

up... 

42

General / Re: The mysterious 'bowl effect'

« on: August 21, 2020, 03:22:15 PM »

Hello Alexey!

Would you be so kind and tell me how exactly I can improve projects with bowl effect in it?

1) How should I take photos of an additional model for finding good camera parameters?

2) At which stage of my model should I import known values?

3) What do I need set as fixed and which parameters should be calculated in the model?

4) Which parameters of optimization should be activated for fisheye cameras if I want to improve the model... And if I change focal length manually?

Thank you very very much!

Edit: Just wanted to tell you that I use markers (23) in all of my models. Hopefully they can help now.

43

Python and Java API / Re: Auto process on start

« on: August 10, 2020, 01:14:13 PM »

Hello Alexey!

Is it possible to fix that in one of the next versions?
Thank you 

44

Python and Java API / Re: Auto process on start

« on: August 10, 2020, 07:36:30 AM »

Thank you for that!
Do I really need to save and open the project to start working?

When launching my python code manually I don't...

[edit]

Code: [Select]

                test_project = r"E:\Arbeitsordner\Test\Test.psx"
                doc = Metashape.Document()
                doc.addChunk()
                doc.save(test_project)
                doc.open(test_project)
                doc.addChunk()
                chunk = doc.chunk

                [...my functions for startup...]

--> no chunk is open when my code launches.
--> In GUI the add-chunk-button is greyed out as you can see in the screenshot.

Hopefully you can help!

45

Python and Java API / Re: Auto process on start

« on: August 09, 2020, 09:04:41 AM »

Same problem with my script. Found no workaround till now.

Script works fine via "run script" but right after Metashape starts it seems to be unable to open doc and create chunk ...
Please help!