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bitmap import

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olive

26 Jan, 2014 02:03 PM

Hi!
would it be possible to make an " bitmap analyzing" node via Python?
(that would for example retrieves brightness of pixels at certain coordinates) Thanks !

1. Support Staff 1 Posted by lievenmenschaer... on 29 Jan, 2014 08:39 AM

   

   hi,

   Doing things like this is possible, you just need to import some python code through

   file >> code libraries.

   I've included a simple example that retrieves the red component and the location for a pixel and returns the value so it can be used in NB. Change the python code to retrieve other values..

   You also will have to make a new node which refers to the python file and function.

   regards,
   lieven

   • Screen_Shot_2014-01-23_at_23.03.47.png 117 KB
   • ReadPicture.zip 90 KB
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2. 2 Posted by olive on 29 Jan, 2014 09:38 PM

   

   Great!!
   thanks for that . I'll try it soon.
   Cheers

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3. 3 Posted by olive on 30 Jan, 2014 08:53 PM

   

   Thanks again for this answer, it was more than what I was dreaming of and exactly what i needed!
   Now, I'm totally beginner at Python but I'm amazed that you could just import Java image libraries to do the job for Python. Is that a magic from Nodebox or is it always like that?
   Cheers,
   Olivier

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4. Support Staff 4 Posted by Frederik De Ble... on 05 Feb, 2014 09:23 AM

   

   NodeBox is written in Java and uses Jython, a Python implementation in Java. Jython can access anything that the JVM has access to, including image libraries.

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5. 5 Posted by Olivier on 05 Feb, 2014 04:50 PM

   

   That's great!
   Thanks for that explanation.
   Cheers
   /olivier

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6. Frederik De Bleser closed this discussion on 07 Feb, 2014 08:43 AM.