ofxDither - dithering for OF

extend
#1

ive been experimenting with dithering algorithms for their old-school 1-bit aesthetic and have put it together into a addon on github, ofxDither => https://github.com/julapy/ofxDither.

i had some help for jesús gollonet and you should also check out his ofxHalftone addon => https://github.com/jesusgollonet/ofxHalftoner.

below are a some gif loops ive created with ofxDither and source is also included below.
[attachment=0:2z6itu9a]110309_dither_examples.zip[/attachment:2z6itu9a]

also put up a blog post about the experiments => http://www.julapy.com/blog/2011/03/09/ofxdither/

110309_dither_examples.zip

1 Like
#2

nice!

#3

cool!!!

#4

this is great.

i am using this on line video and for some reason the first 10 or so horizontal pixels jitter.
i am trying to figure out if it is some pixels array or image not being cleared …

i even get it when i feed the imageIn with a solid color image.

this is being updated every frame.

any ideas?

#5

this change in ofxDither.cpp int the prepImagesForGreyscale function seems to have fixed the problem.

for some reason imageIn.getPixelsRef() cause the pixel jitter.

  
  
	//--- image in.  
   // cout<<"imageIn.bpp "<<imageIn.bpp<<endl;  
	if( imageIn.bpp == 8 )	// already greyscale.  
	{  
		imageInPixels = imageIn.getPixels();  
	}  
	else					// convert to greyscale.  
	{  
        imageIn.setImageType(OF_IMAGE_GRAYSCALE);  
		//ofImage imageInBW;  
        // imageInBW.setFromPixels( imageIn.getPixelsRef());  
		//imageInBW.setImageType( OF_IMAGE_GRAYSCALE );  
		  
		imageInPixels = imageIn.getPixels(); // imageInBW.getPixels();  
	}