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1. Luci for Chai Tea (zens@merveilles.town)'s status on Friday, 06-Jan-2023 11:14:14 JST Luci for Chai Tea

   Toying with a video synth concept in desmos

   • Adrian Cochrane repeated this.
   • Luci for Chai Tea (zens@merveilles.town)'s status on Friday, 06-Jan-2023 11:14:13 JST Luci for Chai Tea

     in reply to

     So, my concept for this, (though not really illustrated here) is to generate video with the sum of two cosine waves: you can almost imagine analog circuitry for this, if you're a plug head:

     Z(x,y,a,b,c,d,e,f,g,h,i,j,k) = a*cos(x*b + c)*cos(y*d + e) + f*cos(x*g + h)*cos(y*i+j) + k

     (for each RGB channel)

     and so using an ifft on some 2d image you could very blurrily approximate an arbitrary image- and "morph" between them by interpolating params a through k

     Adrian Cochrane repeated this.
   • Luci for Chai Tea (zens@merveilles.town)'s status on Friday, 06-Jan-2023 11:35:03 JST Luci for Chai Tea

     in reply to

     You could increase detail by adding terms of course, and this is the basic concept behind jpeg compression, where such an equation represents an 8x8 pixel block. there's nothing really new or novel about summing cosines.

     So but, imagine it's the 1970s and you're doing this with big old boxes with patch boards and such. The neat part in my mind, is implementing the ifft using optics/lenses.