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Re: Inverse palette conversion algorithm... [message #2334 is a reply to message #2311]

Sat, 08 April 2006 14:00

mirek is currently offline

mirek
Messages: 13980
Registered: November 2005

Ultimate Member

What a lovely idea! Even if it is true that my original approach is using a sort of similar technique - distances are radix sorted for each G-line.

However, I have not reproduced your results. I have tried it with the real photo and your algorithm spend 14ms, while mine was done in 5ms.

It is quite possible that it has something to do with babysitting my kids Smile

Smile

- that means I am on notebook and that is Sempron with 128K level 2 cache - based on task manager, memory costs seem to be somewhere around 512KB (quite believable, you have 140KB in feed_me without any actual data stored....).

In any case, I am posting whole nImage package to play with... (with both PalCv algos present - BTW, there is also another "fast" variant that is supposed to be used when inverse palette cube is created with known histogram for the purpose of saving the image without dithering - in that case it is possible to omit colors not present in original image - zero histogram entries).

Mirek

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[Message index]

		Inverse palette conversion algorithm... By: mirek on Wed, 05 April 2006 10:11
		Re: Inverse palette conversion algorithm... By: mr_ped on Fri, 07 April 2006 10:05
		Re: Inverse palette conversion algorithm... By: mirek on Fri, 07 April 2006 11:16
		Re: Inverse palette conversion algorithm... By: mr_ped on Fri, 07 April 2006 13:23
		Re: Inverse palette conversion algorithm... By: mirek on Fri, 07 April 2006 13:34
		Re: Inverse palette conversion algorithm... By: mr_ped on Fri, 07 April 2006 13:16
		Re: Inverse palette conversion algorithm... By: mirek on Fri, 07 April 2006 13:33
		Re: Inverse palette conversion algorithm... By: mr_ped on Fri, 07 April 2006 17:30
		Re: Inverse palette conversion algorithm... By: mr_ped on Fri, 07 April 2006 17:46
		Re: Inverse palette conversion algorithm... By: mirek on Sat, 08 April 2006 14:00
		Re: Inverse palette conversion algorithm... By: mr_ped on Mon, 10 April 2006 17:58
		Re: Inverse palette conversion algorithm... By: mr_ped on Sun, 21 May 2006 15:40
		Re: Inverse palette conversion algorithm... By: mr_ped on Sun, 21 May 2006 15:46
		Re: Inverse palette conversion algorithm... By: mirek on Sun, 21 May 2006 16:01

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