create hi res/quality enlargements from a low res file

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modsquad
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create hi res/quality enlargements from a low res file

Postby modsquad » Sat Dec 14, 2002 7:11 pm


Roo
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Postby Roo » Mon Dec 16, 2002 6:27 am

? ?

HaraldHeim
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Postby HaraldHeim » Mon Dec 23, 2002 6:02 pm


bkmitch

hi res from low res

Postby bkmitch » Tue Dec 31, 2002 6:20 pm


artzend

Increasing dpi

Postby artzend » Wed Jan 01, 2003 12:33 am


Threebirds

Miracle Enlarger

Postby Threebirds » Wed Jan 01, 2003 10:00 am

http://www.fredmiranda.com/SI/index.html

A Photoshop Action: $15 US. I've used it and it is amazing. It is an automation of the 10% increase in image size explained below. It is called Stair Interpolation. Think of the possibilities of using low-res low-cost images for print media. Or using a lower res camera and getting high res results. I can't praise this action enough.

-Steve

HaraldHeim
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Postby HaraldHeim » Wed Jan 01, 2003 11:29 pm

The incremental 10% enlargement which is also used in the "Stair Interpolation" actions from Fred Miranda was rated as good as Lazcos interpolation in an article which tested several of these methods. But it is said to be less effective than S-Spline and Genuine Fractals.

Everyone can easily create an action in Photoshop that does these 10% enlargements. For example for a 200% enlargement, you need seven 10% enlargements and one 2.6% enlargement.

Overlord_Diabolus

Agrees with Harold...

Postby Overlord_Diabolus » Sat Feb 01, 2003 6:10 am

S-Spline is incredible! I'm always amazed at how crisp and sharp the images come out. ~Hail Thyself~ :evil:

harrie verstappen

reductio ad absurdem

Postby harrie verstappen » Sun Feb 02, 2003 1:59 pm

Interpolation can work very well, up to a point. Now, go all the way down to a one-pixel image and try to enlarge from that. See what I mean? It's what Kodak used to call "false enlargement". The information just does not exist.

Echo Walking

Grow!!!

Postby Echo Walking » Thu Feb 12, 2004 7:35 am


HaraldHeim
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Postby HaraldHeim » Thu Feb 12, 2004 4:07 pm


Lightkeeper
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Postby Lightkeeper » Sun Oct 10, 2004 7:51 am


HaraldHeim
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Postby HaraldHeim » Sun Oct 10, 2004 12:40 pm


danielrigano
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Postby danielrigano » Wed Jan 23, 2008 3:14 pm

S-spline and the is really unbelievable.
Last edited by danielrigano on Mon Oct 11, 2010 2:59 pm, edited 1 time in total.

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Re: create hi res/quality enlargements from a low res file

Postby apophatile » Sun Mar 02, 2008 4:58 am


Lesam
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Postby Lesam » Sat Mar 08, 2008 12:42 pm

I am no expert on this, I generally use Irfanview or Genuine Fractals to resize, however an Overview of Seam Carving see
http://www.seamcarving.com/ caught my eye and I found Resizor, a free program at http://www.peterw.000webhost.com/resizor/
which among other techniques uses Seam Carving.
I have not had a chance to really try out the program, so cannot at this time comment with any authority.
The only stupid question is the one you didn't ask

Lesam
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Postby Lesam » Sat Mar 08, 2008 1:27 pm

Apologies, Resizor only uses Seam Carving to reduce image size
The only stupid question is the one you didn't ask


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