Pixels

DV
Posted By
Dayle_Vickery
Jul 16, 2004
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419
Replies
6
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Closed
I have a small picture that I downloaded from the internet and am now trying to have it professionally blown-up into a 24×36" poster. The original picture is 161 x 252 pixel and the company says it needs to be
1600 x 1200 pixel to make a good quality poster.

How do I increase the pixels and still have photo-quality? I can take it to a local photo machine and have it blown-up to 8×10, but that’s all I can think of!

Any help would be greatly appreciated!
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DM
Don_McCahill
Jul 16, 2004
You will have to get a scan of the original image in the pixel range the company specified. There is no way you can enlarge from 161×252 to 1600 x 1200 in Photoshop and maintain any kind of quality.
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Phosphor
Jul 16, 2004
Even 1600 X 2400 pixels isn’t a high enough pixel count for decent resolution at 24" X 36".

You’d really need something more on the order of 200 pixels per inch (p.p.i.)or higher…bringing the image to 4800 X 7200 pixels or larger.

You’re not going to be able to scale up that large from a small web sized image, no matter what you (or anyone else) tries.
P
Phosphor
Jul 16, 2004
EDIT:

" Even 1600 X 2400 pixels isn’t a high enough pixel count for decent resolution at 24" X 36"."

I meant to type: "1600 X 1200 pixels…36" X 24"."

Everything else stands true, though.
I
ImJeffP
Jul 16, 2004
The CSI filter may be able to do this.
X
Xalinai
Jul 16, 2004
wrote:

I have a small picture that I downloaded from the internet and am now trying to have it professionally blown-up into a 24×36" poster. The original picture is 161 x 252 pixel and the company says it needs to be 1600 x 1200 pixel to make a good quality poster.

How do I increase the pixels and still have photo-quality? I can take it to a local photo machine and have it blown-up to 8×10, but that’s all I can think of!

Any help would be greatly appreciated!

This image is so small it covers only 40572 pixels. That is 3% of a 1280×1024 screen. For a photo quality print you assume 300dpi. 24×36" in photo quality means 77.76 million pixels – this is more than 1900 times the size of the original image or only 0.05 percent original data if you upsample to the size you specified.

Maybe you can find a salesman, a politcian or some hot journalist who can make up something from so little substance, a graphics application can’t.

Try to get the original image to scan it.

BTW: If you can get the image from it’s owner in a better quality you might avoid copyright trouble too.

Michael
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Ol__Whozit
Jul 17, 2004
If not, you might find an old MacGyver plug-in that can do it with two burnt matches and a paperclip…

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