jag 88 Responses

Last post: 2 months, 3 weeks ago | Thread started: Aug 28, 08, 12:03 p.m.

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• invisiblechamber

  was a little piece of pixel based picture manipulation software under mac os 7.6 back in the middle 90s. i used it because it did one thing photoshop never did: perfect anti-aliasing to jagged graphics as a post-process. does anyone know anything that would do this nowadays?

  Aug 28, 08, 12:03 p.m. – Permalink

• capsize

  knockout?

  

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  Dog-earAug 28, 08, 12:05 p.m. – Permalink

• Koopsy

  So you have a jagged/rastery edge and you wish to resolve it... is that what you mean?

  • If so, post it up or email me a low res so I can see how I would do it?– Koopsy

  

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  Dog-earAug 28, 08, 12:07 p.m. – Permalink

• invisiblechamber

  

  

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  Dog-earAug 28, 08, 12:16 p.m. – Permalink

• invisiblechamber

  

  • please anti-alias this. i'd be impressed.– invisiblechamber1/2

    I can do tomorrow, I'm at home now... no psd here.– Koopsy2/2

  

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  Dog-earAug 28, 08, 12:19 p.m. – Permalink

• Koopsy

  I'm guessing its more complicated than the diagram you've posted, but for the record, to get rid of the jags on an image like that circle (assuming ts not possible to just re-draw the circle) I would do a series of low impact soft gaussian blurs on it, then using either levels or brightness/contrast to re-establish the harder edges.

  Doing it that way takes a bit of patience becuase if you lurch straight into one single harsh gaussian blur you'll lose the integrity of the shape, so it has to be maybe ten or more blurs at a few pixels maximum, intersperced with correcting contrast adjustments.

  Obviously that doesn;t work with anything that contains tone or textured detail, which was why I asked if I could see the article.

  • I usually set up an action and just do it automatically until it looks good.– Koopsy1/4

    Knowing your work anyway IC, I'm guessing you'd already know this method of correcting Jags.– Koopsy2/4

    yes thanks. i have me all those actions. but real anti-aliasing a very complicated process.– invisiblechamber3/4

    i wonder how this old software did it easily but photoshop can't.– invisiblechamber4/4

  

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  Dog-earAug 28, 08, 12:19 p.m. – Permalink

• Koopsy

  The other thing I sometimes do is multiply the size of something up by fours plus 10 or 20%, so either 410%, 810%, 1610% or 3210% if you've got enough HD room to sample up your file that big, then just sample it back down to its original size. The extra 10% breaks up hard definition so that when you reduce the size back down to where it was to begin with, its anti-aliased itself.

  Takes an attemot or two before you figure out which emlargement and which extra 10 or 20% to add to be the most effectve for your image, but it works a treat.

  • better than blurring is this method.– invisiblechamber

  

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  Dog-earAug 28, 08, 12:35 p.m. – Permalink

• utopian2

  

  • Wrong thread, sorry– utopian21/2

    +1 = WTF.– akrokdesign2/2

  

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  Dog-earAug 28, 08, 1:03 p.m. – Permalink

• wrong

  this is weird, i was just trying to do this exact thing. would be interested to learn a better way!

  

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  Dog-earAug 28, 08, 1:13 p.m. – Permalink