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Dices (Read 2060 times)

redflatliner

Dices
Jul 6^th, 2009, 4:09am

Hi !

A friend of meine (photoartist) wants do build an image he did out of dices. He asked me how to do this, cause Im a developer, but Im new to processing.
The function should divide a given image into many squares and then choose for the square a image of a dice to replace it.
The dices are from one to six (1- dark and 6 -lightest) and are in red blue and yellow with white points). So the function shoud calculate for a sqare of pixels the average color and brightness and than choose the corresponding image of the dice and then the next part of the image. It shoud be a pointilism effect with dices.
He wants to build this picture if he has the electronic model in real.
2 x 2 meters somehow.
Any advices how to do this in processing.

Thanks in advance. Thomas

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: Dices Reply #1 - Jul 6^th, 2009, 8:07am Reminder: this section is "a place to share your finished work", questions should go to Programs (in your case) or Syntax Questions or more specialized sections. And I fear I didn't understand your problem.

Cedric God Member Offline Posts: 1838	Re: Dices Reply #2 - Jul 6^th, 2009, 8:32am I do understand, seems like he just want to copy roberts work http://www.flight404.com/blog/?p=131 ok, it has been done before many times. with dices, cofee, toasts, rubikcubes etc... so all you have to do is take the picture and remap the brigthness from 0-255 for every pixel to a new greyvalue from 1-6...
	twitter.com/CedricKiefer

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: Dices Reply #3 - Jul 6^th, 2009, 8:52am Aaah, it is much clearer with an illustration! Re-reading the explanation after seeing that, it is much clearer, I didn't get it was about real dices... Would have been easier, perhaps, with red, blue and green dices, but I suppose we have to do with what you have... And what is the size of a dice? How many fit in the 2 meters?

Cedric God Member Offline Posts: 1838	Re: Dices Reply #4 - Jul 6^th, 2009, 8:53am btw i already worked on something like this. im sorry that i cant share the code because its part of an upcoming book. But like i said, its pretty easy.
	twitter.com/CedricKiefer

luis2048 YaBB Newbies Offline Posts: 13 NY	Re: Dices Reply #5 - Jul 6^th, 2009, 11:16am Here is my implementation (including source): http://luis.net/projects/processing/dice/ Input Image: Dice:

Cedric God Member Offline Posts: 1838	Re: Dices Reply #6 - Jul 7^th, 2009, 12:21am yep thats better, now i know why my version looked so strange i should have inverted the dices...
	twitter.com/CedricKiefer

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: Dices Reply #7 - Jul 7^th, 2009, 1:02am Actually no, at least according to original post, since the dices have white dots... Also one of the requirements were to use three colors of dice, which make the task harder... (read: more interesting...)

luis2048 YaBB Newbies Offline Posts: 13 NY	Re: Dices Reply #8 - Jul 7^th, 2009, 9:35am No code change needed: input image: only increased the color index array by adding a few more die: A different input image would yield better results. Having dices within the same color range(dark red + pink + orange) with black and white die would make better dice art.

davbol

Re: Dices
Reply #9 - Jul 7^th, 2009, 10:06am

it might be an interesting experiment to sample the image at double the output resolution (so f.e. 100 pixels -> 50 dice, each 2x2 pixel block producing one die) so that when a 2 or 3 is called for you could subsample those four pixels and determine if a forward/backward slash rotation were a better match, the intent being to add a bit of "edge detection" to the die orientation when possible.

redflatliner YaBB Newbies Offline Posts: 2	Re: Dices Reply #10 - Jul 12^th, 2009, 4:34am Great. That was exactly what I was searching for ! Many thanks.T.

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