QFontDatabase: Cannot find font directory /home/ec2-user/photoscan-pro/lib/fonts

[Goran]

hey,
Apparently this Qt library is needed to render the pdf document with fonts.

QFontDatabase: Cannot find font directory /home/ec2-user/photoscan-pro/lib/fonts - is Qt installed correctly?

How to solve this?
I am running Amazon Linux AMI & Agisoft PhotoScan Professional version 1.3.1 build 4030 (64 bit)
Do I have to build that whole Qt Toolkit ?

regards
goran

[Alexey Pasumansky]

Hello Goran,

You may need to set up the following environment variable:

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export QT_QPA_FONTDIR=<path to font files>
The fonts should be directly in that folder, not in the sub-folders.

[Goran]

i cant see any lib folder in the photoscan directory,
tried linking agains the base photoscan directory as it contains some qt files but it didnt work

[Alexey Pasumansky]

Hello Goran,

You can link it to any fonts folder on the computer.  PhotoScan is not packaged with any fonts by default.

[jomey]

Alexey,

could you please give an example on what you mean with 'no subdirectories;?

I set the variable to the

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/usr/share/fonts before starting Agisoft and still have no luck getting the fonts to work.

Also, are there any recommended fonts to use?

Thank you.

[Alexey Pasumansky]

Hello jomey,

Are all font files in the /usr/share/fonts/ folder? "no subdirectories" means that there shouldn't be additional bottom directory level inside /fonts/.

[jomey]

Alexey,

Yes, here an excerpt:

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ls -a /usr/share/fonts/
.                  google-crosextra-caladea  lohit-devanagari  msttcorefonts        smc
..                 google-crosextra-carlito  lohit-gujarati    nhn-nanum            stix
abattis-cantarell  google-noto               lohit-kannada     open-sans            thai-scalab

Joe

[BenP]

Hi,

I'm having the same issue where my report is exported with only black squares instead of text. I'm working on a CentOS 7.4 Linux machine with fonts in a number of sub-directories under

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/usr/share/fonts/ (e.g.,

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/usr/share/fonts/open-sans
I've tried setting the QT_QPA_FONTDIR variable to point to one of these sub-directories but I get the same results everytime. Is there a specific font package that Agisoft requires (like Times, Courier, Helvetica)?

After setting the variable to the font directory I no longer get the error:

QFontDatabase: Cannot find font directory - is Qt installed correctly?

So I guess the problem is with the font packages?

Thanks,
Ben

EDIT: It works now for some reason. I just need to point QT_QPA_FONTDIR to any of the available font folders (e.g., export QT_QPA_FONTDIR=/usr/share/fonts/open-sans) before running my python scripts.

[jomey]

Thank you Ben for sharing.

That did it for me too!