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05/07/2007 10:36:29 PM · #1
I was doing some downloading while surfing the forums, so my speed was considerably slower than it usually is when Im on dpc..
I noticed something kinda strange, when I clicked on a photo I got 2 variants of the image being displayed..

The first variant was: the image would start appearing sharp from the strat, but would load on my screen on top first then add the lower prtions after.

The Second variant was: the image would appear on screen as a whole image, but blocky at first, then detail was would come after as it loaded..

Like I mentioned before, I was downloading some stuff (using a download accelerator) so the majority of my bandwith was dedicated to that, making web surfer alot slower than usuall, and it was the first time (I think) I saw these 2 different effects.

Has anyone else seen this and know why its different for some images?

Or am I just crazy???

05/07/2007 10:40:34 PM · #2
You are probably not crazy, but thankfully I haven't experienced that!
05/07/2007 10:41:28 PM · #3
It's happened to me occasionally

R
05/07/2007 10:47:49 PM · #4
happens to me all the time, but i'm on dialup and my connection is always slow.
05/07/2007 10:49:31 PM · #5
Well.. usually when an image loads in stages (starting with blocky), it's because the person has saved it as a progressive JPEG. So you're probably seeing images people have uploaded here saved as that.

The other type is a regular JPEG.

At least, that's the only explanation I have.
05/07/2007 10:52:26 PM · #6
Originally posted by buzzrock:

The first variant was: the image would start appearing sharp from the strat, but would load on my screen on top first then add the lower prtions after.

The Second variant was: the image would appear on screen as a whole image, but blocky at first, then detail was would come after as it loaded..


one image is saved as progressive JPEG, the other is not.
for DPC entries, progressive JPEG is not advised - you'll never know if some impatient voter will vote you low for "blocky" photo!

Message edited by author 2007-05-07 22:53:17.
05/07/2007 10:53:26 PM · #7
Originally posted by Artyste:

Well.. usually when an image loads in stages (starting with blocky), it's because the person has saved it as a progressive JPEG. So you're probably seeing images people have uploaded here saved as that.

The other type is a regular JPEG.

At least, that's the only explanation I have.


And that is an excellent explanation, makes sense to me..)
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