Request for information regarding special jpg image freeware / software

  • Thread starter Thread starter John2005
  • Start date Start date
J

John2005

Hello everyone,

Can anyone please tell me if there is a freeware or demo program that
will increase the size of a jpg file without loss of image quality ? Is
there a way to increase image size and actually improve image quality ?

Perhaps I should convert the jpg to another format, and then try to
improve the quality of the image in a different format.

I would appreciate any feedback and/or advice.

Thanks
John
 
Can anyone please tell me if there is a freeware or demo program that
will increase the size of a jpg file without loss of image quality ?
Click to expand...

Since the concept is impossible (there's no way to add non-existent
data to a file), the simple answer is "no".
Is there a way to increase image size and actually improve image quality ?
Click to expand...

Not without adding the missing pixels from another, higher density,
picture.

You can change image size (downward as much as you want, upward a
little) with no *apparent* loss of image wuality, but you can't take a
50k .jpg and produce a 16 foot X 20 foot blowup that you can look at
from a short distance. (There's a maximum "subtended angle" [or
minimum distance] at which the picture elements start being visible -
you can't increase that.) Regardless of the size of the file, the
actual resolution can't be increased without adding picture elements.
 
Hello everyone,
Click to expand...
Can anyone please tell me if there is a freeware or demo program that
will increase the size of a jpg file without loss of image quality ? Is
there a way to increase image size and actually improve image quality ?
Click to expand...
Perhaps I should convert the jpg to another format, and then try to
improve the quality of the image in a different format.
Click to expand...
I would appreciate any feedback and/or advice.
Click to expand...

It seems like you might want a freeware program that works like a
number of payware programs. SmartScale, Genuine Fractals etc. I
doubt that anything in freeware like them exists. There is however
free information on some of the issues you ask about, upsampling
etc at ;

http://graphicssoft.about.com/cs/resolution/gr/smartscale.htm

and other pages on that site. There are also a number of freeware
graphics programs listed there for downloading.

Regards, John.
 
Back
Top