Subject:
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Re: Switching from BITMAP/JPEG to PNG
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Newsgroups:
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lugnet.cad, lugnet.inst
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Date:
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Mon, 28 Apr 2003 21:43:49 GMT
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Viewed:
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1375 times
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I've decided to keep the original two formats and add a third.
Processing of the new layout layer of LPub must be done in either bitmap or
PNG, because composite images made of JPEGs end up having the barground color
change all over the place.
I can see working the whole issue in bitmap, and then saving the final forms in
BITMAP, PNG or jpg.
Kevin
In lugnet.cad, Jake McKee writes:
> In lugnet.cad, Kevin L. Clague writes:
> > JPEG image format and the new callout capabilites in LPub (plus PLI • background
> > color non-white which I just fixed) are incompatible with JPEG because when • you
> > pack images together that are rendered with the same background color, not • all
> > the backgrounds look *exactly* the same.
> >
> > I'm going to add PNG support to LPub for building instructions and want to
> > eliminate JPEG and BITMAP capabilities. This will simplify things in a *lot*
> > of places in LPup. Those of us who authored books for Syngress using LPub • used
> > bitmap format because it was loss-less. For web publishing, JPEG is • typically
> > used because of reduced file size.
> >
> > PNG provides lossless compressed images. Rather than having to support all
> > three formats bitmap, JPEG and PNG, I only want to support PNG.
> >
> > Any objections?
>
> I don't necessarily object because I can completely see where you are coming
> from. I will say though that recently in working with PNG in Photoshop, the
> PNG images took MUCH longer for Photoshop to deal with them. I'm not sure
> what was going on, but they took far long longer to open and to process than
> their direct JPG and BMP equivalents. I also noticed that the BMPs seem to
> compress down to almost nothing when Zipped, but the PNGs remain quite
> large. (Important when you have limited hard drive space and are rendering
> at print quality!)
>
> For what it's worth. Again, I don't really object, just throwing a few other
> things out to consider.
>
> Jake
> ----
> Jake McKee
> LEGO Enthusiast
> Webmaster - B.I. Portal
> http://www.bricksonthebrain.com/instructions
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Message is in Reply To:
 | | Re: Switching from BITMAP/JPEG to PNG
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| (...) I don't necessarily object because I can completely see where you are coming from. I will say though that recently in working with PNG in Photoshop, the PNG images took MUCH longer for Photoshop to deal with them. I'm not sure what was going (...) (22 years ago, 28-Apr-03, to lugnet.cad, lugnet.inst)
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