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Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) [message #53655 is a reply to message #53654]

Sat, 18 April 2020 23:43

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

Oblivion wrote on Sat, 18 April 2020 20:15

Ah, yes, I totally forgot that!

AFAIK, a single Premultiply(out) at the end should be sufficient.

Edit: But since this implementation don't have a working alpha channel, Premultiply should be removed completely.

This algorithm is not "the fastest", but reasonably fast and works well.

Best regards,
Oblivion

Ah, but then it should probably start with "unmultiply"...

Mirek

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[Message index]

		[Proposal] Blur algorithm (fast box blur with gaussian approximation) By: Oblivion on Sat, 18 April 2020 00:51
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: mirek on Sat, 18 April 2020 19:33
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: Oblivion on Sat, 18 April 2020 20:15
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: mirek on Sat, 18 April 2020 23:43
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: Oblivion on Sun, 19 April 2020 10:13
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: mirek on Sun, 19 April 2020 17:09
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: Oblivion on Sun, 19 April 2020 18:06
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: mirek on Mon, 20 April 2020 12:30
		Re: [Proposal] Blur algorithm (fast box blur with gaussian approximation) By: Oblivion on Tue, 21 April 2020 13:04

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