How can I keep the quality of a image even when it gets large?

It's the skilled human being and the dummy computer (college professor code name for the PC) have to perform the task of editing a poor image into a good one. If it can be done or not? There are photo studios that can use Adobe Photoshop or better to try to clean up the image. Not going to be cheap process either way you cut the pie!

I'm sure you know this tipstir and this is really directed at adu123, but Pixel averaging/blurring is not equal to increasing quality. What tipstir has done is the best you can hope for.

Best...explanation...ever! :haha:

Yes I know it's aim at that user, but thanks for the nod though...

this is a classic Desktop Publishing issue; resolution ( xx by yy) is not the same thing
as DPI (Dots per Inch).

• the image size is measured in the resolution which defines the paper size needed to contain it.
• the DPI setting controls the print quality. minimal lazer printer dpi is 300, but professional
  b/w, 4 color spot images or full color printing is sent to the printer in EPS formats with
  a dpi > 1200.

do the math (1200 dpi x resolution width x resolution height) and you see that these
are VERY LARGE files.

the original image must have a high DPI value if enlargement is to have any hope of
decent quality.

a GIF/BMP is always low dpi as they are designed for screen (monitor) display,
while a JPEG can contain any reasonable dpi * resolution.

I'm definitely not wasting my time here on Techspot! this is a place where people can ask for help and learn from each other, that's what this site is for. Not everyone has a DEGREE in "Photography" like you.

Thank you for all the advices you guys gave me! especially I have to thank tipstir having edit the image for me, I'm really appreciated it. This discussion can end.....