In Photoshop 8 how would I sharpen a jpeg after resizing?

charles hill wrote:

I have scanned a 1×1 inch image from a magazine that I want to increase the image size to 4×4. Unfortunately, when increased the resulting image is very poor and you can see the outline of each pixel. How can I fix the resized image to make it as sharp as the original?
In MS Paint I could use a paintbrush or something to paint in pixels to make a image sharper, is there a tool in PS8 to do the same only easier?
Thanks

try unsharp mask in filters

upsizing images will *always* result in a loss of image quality

your best bet is to scan at the highest resolution possible, and / or increase the resolution in photoshop *before* enlarging.

—
Michael Evangelista
Southern Utah Web Design
www.suwebs.com

"charles hill" wrote in message

I have scanned a 1×1 inch image from a magazine that I want to increase the image size to 4×4. Unfortunately, when increased the resulting image is very poor and you can see the outline of each pixel. How can I fix the resized image to make it as sharp as the original?
In MS Paint I could use a paintbrush or something to paint in pixels to make a image sharper, is there a tool in PS8 to do the same only easier?
Thanks

I would scan at a high resolution and probably choose the appropriate descreen option if it’s from a magazine to reduce the moir

On Wed, 19 Jan 2005 17:29:35 -0800, Peadge wrote:

I would scan at a high resolution and probably choose the appropriate descreen option if it’s from a magazine to reduce the moiré patterns, perhaps a setting of 133 lpi. You’re scanning program may also have other adjustments
Then open it in Photoshop and see how it looks. Using descreen alone may fix all your problems. To sharpen it more, use the Unsharp Mask under Filter > Sharpen.

Another method is to make a copy of the layer and add a tiny bit of Gaussian Blur (Filter >Blur > Gaussian Blur). Then grab the eraser tool (soft brush) and set the opacity to around 60 or 70% and erase over the areas that would obviously look better less blurry. One swipe with the eraser may do the trick or multiple swipes may be needed. The strategy is to slightly blur areas that lack definition, like a blue sky or even a cloudy sky something like that. Then erase away the blurred areas that have and need definition. This works well on faces too to smooth out the skin, and then erase around the eyes eyebrows, mouth, teeth, jewelry, etc.
Peadge 🙂

"charles hill" wrote in message

I have scanned a 1×1 inch image from a magazine that I want to increase the image size to 4×4. Unfortunately, when increased the resulting image is very poor and you can see the outline of each pixel. How can I fix the resized image to make it as sharp as the original?
In MS Paint I could use a paintbrush or something to paint in pixels to make a image sharper, is there a tool in PS8 to do the same only easier?
Thanks

Again thanks to everyone who replied. I will try all the suggestions.

My scanner is old model but good enough for most things. I have an image scanned elsewhere at a very low resolution I wanted to enlarge from 1×1 inches to 8×8 inches but I see the individual pixels at 2×2 inches. With PS 8 I should be able to enlarge it without the pixels right?

That was my question, what techniques would I use to enlarge any small digital image to say 11×14 inches?

charles hill wrote:

My scanner is old model but good enough for most things. I have an image scanned elsewhere at a very low resolution I wanted to enlarge from 1×1 inches to 8×8 inches but I see the individual pixels at 2×2 inches. With PS 8 I should be able to enlarge it without the pixels right?
That was my question, what techniques would I use to enlarge any small digital image to say 11×14 inches?

A process known as "Stair Interpolation" can be used in increments of 110% several times to ‘stretch’ an image to larger size. 300% is about the limit of this process before distortion becomes the deciding factor of it being ‘good enough’. If you can see pixels at 2×2, you won’t get much past 4×4 with SI before the image turns to crud.

Doug

"charles hill" wrote in message
:
: I have scanned a 1×1 inch image from a magazine that I want to increase : the image size to 4×4. Unfortunately, when increased the resulting image : is very poor and you can see the outline of each pixel. How can I : fix the resized image to make it as sharp as the original? :
: In MS Paint I could use a paintbrush or something to paint in pixels to : make a image sharper, is there a tool in PS8 to do the same only easier? :
: Thanks

I’m not a 100% sure but I think a photo lab could do
the best job for you. They use optics to enlarge and I
don’t think there is any better way to enlarge a picture.

On Wed, 26 Jan 2005 15:25:30 -0800, "formerly known as ‘cat arranger’" wrote:

"charles hill" wrote in message
:
: I have scanned a 1×1 inch image from a magazine that I want to increase : the image size to 4×4. Unfortunately, when increased the resulting image : is very poor and you can see the outline of each pixel. How can I : fix the resized image to make it as sharp as the original? :
: In MS Paint I could use a paintbrush or something to paint in pixels to : make a image sharper, is there a tool in PS8 to do the same only easier? :
: Thanks

I’m not a 100% sure but I think a photo lab could do
the best job for you. They use optics to enlarge and I
don’t think there is any better way to enlarge a picture.

There is a way to increase the picture image size and retains the resolution described in

Scott Kelby’s Book, Photoshop book for Digital PHotographers:

1. Open the picture, then, Image menu—>image size
2. In the image size dialog box: make sure Resample Image is turned on to bicubic. Switch the unit of measurement pop-up menus in the dialog from inches to percent and type in 110, which will increase your image by 10% increments, for some reason it doesn’t seem to soften or blur the image.
3. Repeat this procedure until the size of the picture is what you want. Turnning on the rulers around the picture will let you see the progressively increasing dimensions of your pic.

Hope this help

Jack Chan wrote:

On Wed, 26 Jan 2005 15:25:30 -0800, "formerly known as ‘cat arranger’" wrote:

"charles hill" wrote in message

I have scanned a 1×1 inch image from a magazine that I want to increase the image size to 4×4. Unfortunately, when increased the resulting image is very poor and you can see the outline of each pixel. How can I
fix the resized image to make it as sharp as the original?
In MS Paint I could use a paintbrush or something to paint in pixels to make a image sharper, is there a tool in PS8 to do the same only easier?

Thanks

I’m not a 100% sure but I think a photo lab could do
the best job for you. They use optics to enlarge and I
don’t think there is any better way to enlarge a picture.

There is a way to increase the picture image size and retains the resolution described in

Scott Kelby’s Book, Photoshop book for Digital PHotographers:
1. Open the picture, then, Image menu—>image size
2. In the image size dialog box: make sure Resample Image is turned on to bicubic. Switch the unit of measurement pop-up menus in the dialog from inches to percent and type in 110, which will increase your image by 10% increments, for some reason it doesn’t seem to soften or blur the image.
3. Repeat this procedure until the size of the picture is what you want. Turnning on the rulers around the picture will let you see the progressively increasing dimensions of your pic.

Hope this help

It will. Good procedure according to some comparison reports.

If it is in a magazine, it will be "screened", I think. Most times a judicious Gaussian Blur will remove that obstacle to a nice, clean image.

Go to Wayne Fulton’s site for an excellent compendium of facts and procedures:
http://www.scantips.com/

—
Frank ess

"Because of the Swiss Cheese nature of everyone’s life experience and education, the Whoosh Bird can drop a load on anyone’s head, without warning." -Albrecht Einstein