On May 1, 8:12 am, hsyq...@[EMAIL PROTECTED]
wrote:
> Sorry for this late reply.
>
> 3 example online:
>
> A.www.PenangA1.com/png/1K.PNG
>
> B.www.PenangA1.com/png/4K.PNG
>
> C.www.PenangA2.com/png/ORI.PNG
Picture C should be www.PenangA1.com/png/ORI.PNG
> The three examples above are fragments of a drawing that terragen
> produced just a few days ago.
>
> All three pictures were taken by the same screen capture program.
>
> If you take a look at Picture C (ori.png), it's from the original
> drawing ( resolution: 4096 X 3072 ), with file size of 37MB, in BMP
> format. In Picture C you can see patches of green leaves distinctly,
> arising from the brown wall.
>
> Picture B represents a screenshot fragment of the 37MB drawing as my
> desktop wallpaper (1024 X 768). As you can see from Picture B,
> although much smaller than Picture C, the patches of green leaves are
> still separated from the brown wall.
>
> However, if you look at Picture A ... the patches of green leaves
> kinda melt into the brown wall behind it. Picture A was from a
> fragment of a 1024 X 768 picture (JPG format) that I shrunk from the
> original 37 MB BMP drawing. When I shrunk it, I use 100% JPG quality,
> with the "Lanczos" option.
>
> The most im****tant thing is that comparing Picture A with Picture
> B ... as you can see, even if Picture A and Picture B were obtained
> from pictures with the same dimension ( 1024 X 768 ), albeit different
> pictures, the green leaf patches of Picture B can still be clearly
> seen, while Picture A, the green leaves and brown wall are all mixed
> up.
>
> Any comment ??
>
> aruzinsky wrote:
> > On Apr 29, 12:39=EF=BF=BDam, hsyq...@[EMAIL PROTECTED]
wrote:
> > > Hello !
>
> > > 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 !!
>
> > > I do all kinds of computer graphics, from fractals to virtual
> > > landscape, to sci-fi rendering, using softwares ranging from
photoshop=
> > > to terragen to povray.
>
> > > When I am satisfied with a certain creation, I often make a master
> > > copy with the resolution of 8192 X 6144 pixel. Why that size?
Because
> > > that's the largest size my puny computer (dual-core 3GHz CPU running
> > > XP with 4GB RAM) can produce within a reasonably timeframe. (Give or
> > > take 8 hours for rendering).
>
> > > As the filesize for a JPG with 8192 X 6144 resolution may go up to
30+=
> > > MB, I often have to shrink them to a more reasonable 1024 X 768,
> > > filesize about 800 KB or so.
>
> > > 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. In the 1024 X 768 JPG
files,
> > > all those details become blurred. No matter it's a JPG ---> JPG
> > > shrink, or BMP ---> JPG shrink, or TIFF ---> JPG shrink, all those
> > > details are GONE !!
>
> > > I have experimented with many different graphic / photo softwares in
> > > the shrinking process, all of them give me the same "blurring"
effect.=
>
> > > Now my questions to all you Gurus as below ---
>
> > > 1. =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD
=EF=BF=
=BDCan you tell me of the best way to shrink a 8192X6144 size graphic
> > > to
> > > =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD
=EF=BF=BD =
=EF=BF=BD 1024X768 size graphic without losing the interesting details?
>
> > > 2. =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD =EF=BF=BD
=EF=BF=
=BDWhich software do you recommend to carry out the shrinking
> > > operation?
>
> > > Thank you all in advance !!!
>
> > > Sincerely,
> > > Lee
>
> > Instead of excess verbosity, you should post links to crops of before
> > and after images showing the problem areas.
>
> > You (plural) are not entitled to ignore the adage, "A picture is worth
> > a thousand words."
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