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Re: [resend] Why is threshold not working in my situation?



I think it's not working because the image being posterized is mostly translucent, and the posterization is only applied to the rgb components..?

Anyway, another way of doing this is to use a smaller blur radius, then multiply the blurred image by a scale factor:

Attachment: bubble.qtz
Description: application/quartzcomposer


John


On Jun 30, 2005, at 12:45 PM, Pierre-Olivier Latour wrote:

I don't know if it's a bug or not - I'd suggest you wait a few days to see if Core Image people had a chance to look at it and comment (they monitor this list as well), and if nothing happens, just post a bug. But make sure you simplify the composition to the minimum test case as it helps debugging a lot.

On Jun 30, 2005, at 12:35 PM, Dan Wood wrote:


Thanks.  Pierre, do you think I should file this as a bug?

Dan


On Jun 30, 2005, at 11:56 AM, Sam Kass wrote:



Hi Dan,
I got your message last time and tried your composition, and sure enough it seemed to me it should have worked but didn't. You might try hacking up your own posterize-esque Core Image Kernel filter, but in the meantime I couldn't figure out how to make it work or why it didn't, so didn't reply.
--Sam


Dan Wood wrote:




[Apologies if you have seen this before -- I thought I sent it, but I didn't see it go through, nor any responses. Trying again.]


I have a simple composition in which I am trying to blur some text, and then apply a posterization on the blur to make a "bubble" around the text, to get an effect sort of like the logo to Skype, <http:// www.skype.com/>.


I'm applying a gaussian blur to the text, then color posterize -- but it seems to have no effect.

Any ideas?



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Pierre-Olivier Latour                            email@hidden
Quartz Composer Architect                Graphics & Imaging Team

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References: 
 >[resend] Why is threshold not working in my situation? (From: Dan Wood <email@hidden>)
 >Re: [resend] Why is threshold not working in my situation? (From: Sam Kass <email@hidden>)
 >Re: [resend] Why is threshold not working in my situation? (From: Dan Wood <email@hidden>)
 >Re: [resend] Why is threshold not working in my situation? (From: Pierre-Olivier Latour <email@hidden>)



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