Addressed to: Miguel Cruz <[EMAIL PROTECTED]>
[EMAIL PROTECTED]
** Reply to note from Miguel Cruz <[EMAIL PROTECTED]> Sat, 27 Apr 2002 19:11:46 -0500 (CDT)
>
> I'm guessing the issue is that it complicates the process of adding new
> images, because someone has to create and upload two corresponding files.
>
> This way, they get the benefit of rapid page generation combined with a
> simpler administration process.
>
> miguel
>
Who said anything about UPLOADING two images? My understanding of the
question was that he wanted to: "store only one copy of each image -
full size." and "resize it down to the thumbnail size before sending it,"
IMnsHO, that's crazy, unless you have a very large number of images with
very few repeat visits to their thumbnail pages.
I agree, it is just as crazy to expect the user to do the thumbnail
creation. ImageMagick does a great job of this, but it should be done
when the file is uploaded, not every time an image needs to appear on a
thumbnail page.
It might not be that bad with 400X400 initial files, but resize time on
my server for a mega-pixel JPEG from my digital camera is about 10-40
seconds which you might get a photo uploader to sit thru, but way too
long for a visitor to your site.
Rick
> On Sat, 27 Apr 2002 [EMAIL PROTECTED] wrote:
> > I think he already has the best solution. Store two images. How many
> > thumbnails are there on a page? At 1-2 seconds per image to resize how
> > long will you make every visitor wait to see the thumbnails?
> >
> > Disk space is cheap. If you have to buy another drive - no big deal. I
> > don't know about you, but for me if a web page doesn't load in about 10-15
> > seconds I'm outa here!
> >
> > Rick
> >
> >
> >
> > ** Reply to note from Miguel Cruz <[EMAIL PROTECTED]> Sat, 27 Apr 2002 11:36:54 -0500
>(CDT)
> > >
> > > On Sat, 27 Apr 2002, Ray Paseur 703.346.0600 wrote:
> > > > I am storing several detailed images at about 400x400 pixels (inventory
> > > > for an art gallery). I show a page with thumbnails of the images. When
> > > > a site visitor clicks on a thumbnail, I open a separate window to
> > > > display the detailed image.
> > > >
> > > > Presently I am storing two copies of each image - full size and thumb.
> > > >
> > > > My objective is to store only one copy of each image - full size. (The
> > > > rationale behind this is a complicated story involving old gallery
> > > > owners, digital cameras, rudimentary image editing skills, etc.)
> > > >
> > > > I want the server to read the full size image, but resize it down to the
> > > > thumbnail size before sending it, thus saving transmission time.
> > > >
> > > > Are there any server-side applications that can handle this?
> > >
> > > You could use ImageMagick (particularly, the 'convert' program) to do this
> > > but decent results are not fast (not that it'll take several seconds or
> > > anything, but it does take a certain amount of time, and everything adds
> > > up).
> > >
> > > If you want to do this on the fly, I'd suggest having it save the
> > > thumbnails when they're generated so that the next time someone comes, it
> > > doesn't have to go through the process again.
> > >
> > > miguel
> > >
> > >
> > > --
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> > >
> > >
> >
> >
> > Rick Widmer
> > Internet Marketing Specialists
> > http://www.developersdesk.com
> >
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> >
> >
>
>
Rick Widmer
Internet Marketing Specialists
http://www.developersdesk.com
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