> Al wrote: > Please, check this new handler in the forum and suggest how to > make this faster and more precise.
I already gave you a method that is, with a 500x500 image, at least 1000 (thousand) times faster than your script. Of course this is not due my special skills but the ability of javascript (used via a browser widget) to let the GPU/graphic card do the essential job of pixel manipulation. So all considerations to improve the LCS script are, TMHO, of rather theoretical value. Here are some more: > Al wrote: > ... the result STILL is not visually identical to that handler. > My educated guess is that Atkinson dither algorithm requires > numbers with more than 2 numbers after the decimal point. > That is: 243.643578 instead of just 243.64 Conclude from the following: The Atkinson algorithm uses multiples of 1/8 = 0.125 for the diffusion-error, the Floyd-Steinberg algorithm uses multiples of 1/16 = 0.0625. And have this in mind: Whenever you use numToChar(Number) in your script you are wrong by Number - round(Number) of the accumulated pixel value ... _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
