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Resizing help


K

KingEddy

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Hi,

Im trying to resize a picture to be able to print it out for a poster, but it looks pixelated.

Any help on how to do so

jordan-free-throw-line poster.jpg

Trying to make it like 3000+ pixels
 
How good are you with the pen tool? I know there are some vector based programs that could perhaps upscale this automatically but within Ps you'd need to trace the whole image first (basically recreating it).
 
RTContent, I made this tracing over the Jordan Free throw dunk photo with the lasso tool, I though that would make it scalable since it would make vector shapes. Should I just do the same thing over again with the pen tool?
 
Thanks RTContent, I did not know that, that will make this easier. How would I use the pen tool to make this work? As I have never really used the pen tool
 
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You can upsize the image....I'm at work so I don't have PS open, so from memory.

Go to Image...the dialog in the box will allow resizing....where the pulldown shows inches, CM, and % set percent to 110 in the pixel size box, (check the option that is best for enlargment)

Run this as many times as needed....I learned the 10% from Kelby...and it does work on most images.
 
MikeMc said:
You can upsize the image....I'm at work so I don't have PS open, so from memory.

Go to Image...the dialog in the box will allow resizing....where the pulldown shows inches, CM, and % set percent to 110 in the pixel size box, (check the option that is best for enlargment)

Run this as many times as needed....I learned the 10% from Kelby...and it does work on most images.
Click to expand...

I'm confused. How would that get rid of the noise already in the jpeg? What exactly does this 10% process do?
 
RTContent said:
I'm confused. How would that get rid of the noise already in the jpeg? What exactly does this 10% process do?
Click to expand...

I'm wondering the same thing. I dont understand that process? And the jpeg is pixelated because I have already tried enlarging it via canvas size in the dialog box
 
There are lots and lots of ways one could do this. Here's how I would rank some of the more common approaches:

I agree with everyone else that using the Pen tool is, by far, the best way to go.

If you have Adobe Illustrator, probably the next best approach in terms of quality / accuracy is to use its "Image Trace" tool, and then edit the paths. However, you still need to be quite familiar with paths and AI, and it often generates spurious paths that need to be edited out, so it can be slow.

My third choice is to stick with bitmaps and use one of the programs in the old "Vivacity" plugin suite from Topaz. It's called "2x" and it works quite well for graphics like this. I've attached below a 1:1 crop of the image after I used this program to bring your image up to 5120 pixels wide. It's not perfect, but not bad, and it's extremely fast.

Genuine Fractals (aka, onOne's Perfect Resize) produces similar results to Vivacity 2x.

My next choice would be to simply up-rez using Photoshop's "Image Size" dialog box. My impression is that their image resizing algorithms have been tweaked when going from cs5 to cs6 and it's better than it used to be. Edges will still be a bit soft, as shown in the 2nd attachment, below.

With respect to the incremental up-rez'ing technique, I never was that fond of it. It might be a tad better than PS's old algorithms, but the extra work simply wasn't worth it when other methods were clearly superior.

HTH,

Tom

Attachments:

a) 1:1 crop (600 pixels square) of the image after being up-rez'ed by a factor of 4 using Vivacity 2x twice. I find this works quite well.

b) same as the previous except that up-rez'ing was done using "Image Size" in CS6. Obviously, there are a lot of artifacts present.
 

Attachments

  • jordan-free-throw-line poster-tjm02-acr-ps02a_vivacity_up_rez-5200px_wide-02_1to1_crop_of_hoop.jpg
    jordan-free-throw-line poster-tjm02-acr-ps02a_vivacity_up_rez-5200px_wide-02_1to1_crop_of_hoop.jpg
    160.5 KB · Views: 24
  • jordan-free-throw-line poster-tjm01_acr-ps01a-uprezed_to_5120_in_PS-then_1_to_1_crop.jpg
    jordan-free-throw-line poster-tjm01_acr-ps01a-uprezed_to_5120_in_PS-then_1_to_1_crop.jpg
    93.1 KB · Views: 24
PS - BTW, did you make this graphic? If so, how? I ask because of (a) possible copyright issues, and (b) if you have the original artwork available, there may be other, even better options open to you.

T
 
I will never disagree with using the pen. That said the OP was asking how to resize w/o pixelating...I reread it and I guess it is already pixelated...

That said I have done the 10% upsizing, and thought the results very nice using a picture

Sorry for not reading correct. :beer:
 
The pen tool is great but it takes getting used to so if you have not had experience with it by the time you finish your project you may have less hair on your head (because you tore it out in frustration :) ) The upside is you will then be real good at creating vectors and doing selections using this excellent tool.

I have a program called PhotoZoom which is used to do this sort of thing. If its your own graphic, and if you like, send the pic to me and I will do it for you. You might also be able to find a free service on-line to do this, try doing a google search, you may be lucky and find one.
 
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@Bgoodman - You can download the OP's image exactly the same way I did: Click on his image 2 or 3 times and you be taken to the full-rez version of it.

I'm always interested in enlargement methods that I'm not familiar with.

It would be of interest to many of us if you could provide a comparison of PhotoZoom to the enlargement methods I discussed and illustrated earlier in this tread. You don't have to do the whole image -- just enlarge the hoop by 400% (linear) and post the result.

Tnx,

Tom
 
RTContent said:
I'm confused. How would that get rid of the noise already in the jpeg? What exactly does this 10% process do?
Click to expand...

The short answer is that I don't think anyone knows, or can even articulate a good argument about why it should be better. ;-)

There has been an astonishing amount written on up- and down-rez'ing images both in the photographic and scientific literature. The incremental up-rez'ing technique received a lot of attention from around 2003 to about 2007, but interest in it has died off substantially since then. In fact, I haven't seen it mentioned anywhere in the last year or two. There are many websites that compare the various approaches to up-rez an image. I did my little comprison only because I have a feeling that the image size algorithms in PS (ie, image interpolation and extrapolation) have been improved slightly in CS6 (disregarding the new "automatic" option), and I wanted to see how they currently compare to one of my favorites (Topaz Vivacity). The result was that I still prefer Vivacity over the native "Image Size" tool for 2x and 4x (linear) up-rez'ing.

Tom
 
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