Re: Shrinking a picture --- and it becomes blur !!

tacit wrote:
> In article 
> <52088436-f3ae-42a8-862f-cb283c8c517c@[EMAIL PROTECTED]
>,
>  hsyq8xg@[EMAIL PROTECTED]
 wrote:
> 
>> I do computer graphics as a hobby, and have produced quite a number of
>> stunning graphics. Often time though, when I shrink the graphic to put
>> them online, they become blurred !!
> 
> Well, of course! What did you expect?
> 
> If you resize an image to make it smaller, you remove pixels. When you 
> remove pixels, you remove detail.
> 
> On top of that, if you save as JPEG, you remove even more detail. JPEG 
> compression is "lossy." It was invented for situations where file size 
> is critical and image quality is not im****tant. It makes files smaller 
> by discarding image detail.
> 

On rereading the OP's post, I think the
(interesting) discussion on sampling algorithms
is besides the point.

The key phrase (I think) is:

> However, I found that when I do that, many interesting minute details
> that were in the 8K X 6K pictures (even when I shrink fit it to my
> 1024X768 desktop as wallpaper) are GONE.

I think this implies that simply setting the "big image"
as desktop gives results the OP finds acceptable, which I imagine
involves pretty crude down sampling.

Which leaves JPEG artifacts as the culprit.

   BugBear