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Re: [opensource-62] need image resolution graphic design advise

From: mowgli
Sent on: Friday, June 29, 2012 5:45 PM
useful yes.  i dont want to resize it.  i just want to get rid of random grainy excess dots & perhaps sharpen image a bit.  size is ok.

how would i adapt your advised methods below for that since they seem like they will all enlarge it?

its a 417x418 png presently 96 dpi for a print brochure.  sigh.

btw, thanx!

On Fri, Jun 29, 2012 at 5:10 PM, Collin May <[address removed]> wrote:
I believe that it is [or used to be] common practice to do bicubic upsampling in increments of about 110% or so until you reach your desired size.  There are also some commercial packages like alien skin and genuine fractals that are supposed to work pretty well, but I don't have any experience with them.  Honestly tho, its been a while since I've messed with any of this stuff.  

Additionally, it seems like it would depend on how big of an enlargement you need and what sort of print media you're talking about.  If its going to a newspaper or something, you should be fine.  I've had some pretty grainy stuff that looked decent in newsprint.  I've never dealt with a magazine before, but it doesn't seem like it would be very forgiving.

It seems like it would also depend on what sort of images they were.  

Not sure if any of that was actually useful, just thought I'd throw in my 2 cents

On 29 June[masked]:17, mowgli <[address removed]> wrote:
i have some low rez images from the web i need to adapt to print media quality.  i have read about upsampling/uprezzing images.

if you have any experience/advise/feedback on achieving (or the futility of achieving) the above, pls share with meh.  thanx.

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