#632338 - 12/22/06 10:18 AM
Re: Superoverlay.1.5.0
[Re: Valery35]
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Cartographer
Registered: 07/16/05
Posts: 455
Loc: California
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Is there anyway to fix the out of memory problem that happens when I try to load too many maps at the same time?
If I have 20 or 30 maps to process, I can only do them in groups of 5-6 at a time because the application runs out of memory and won't add anymore to the batch.
Is it necessary to load the entire image into memory before it is time for it to be processed?? That seems to be the problem.
Thanks.
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#632340 - 12/23/06 12:59 AM
Re: Superoverlay.1.5.0
[Re: Valery35]
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Cartographer
Registered: 07/16/05
Posts: 455
Loc: California
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Thanks Valery. It does work very well. I'm trying the Scheduler right now. I can see that being very useful for online maps that get updated regularly. Here is what I just finished doing with SuperOverlay. About 40,000 tiles alltogether. http://www.fox-fam.com/gefiles/maps/Sectionals/SectionalCharts.kmlMatt
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#632343 - 12/26/06 10:05 AM
Re: Superoverlay.1.5.1. News.
[Re: Valery35]
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Cartographer
Registered: 07/16/05
Posts: 455
Loc: California
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I have a suggestion for image output format that is optimized for transparency.
Can you add an option to output a mix of PNG and JPG with the following rules:
- Tiles that are 100% transparent color get skipped completely. - Tiles that have 0% transparent color get saved as JPG - Tiles that have >0% and <100% transparent color are saved as PNG with transparency.
This will help because PNG supports transparency but isn't lossy. JPG is lossy but doesn't support transparency. So a mix of the two formats will create the smallest possible SuperOverlay and still have transparency.
Thanks.
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#632344 - 12/26/06 10:52 AM
Re: Superoverlay.1.5.1. News.
[Re: Forkboy2]
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Cartographer
Registered: 07/16/05
Posts: 455
Loc: California
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Quote:
I have a suggestion for image output format that is optimized for transparency.
Thanks.
Actually, after doing some more experimenting, I found a way to have lossy compression AND transparency at the same time with 8-bit GIF files. That seems to do what I need. So nevermind 
In case any others are interested, here are the file sizes for my little experiment.
Original JPG - 14.7 KB Regular GIF - 28.5 KB Lossy (80% quality) GIF with transparency- 12.8 KB PNG (with PNGOut) - 25.4 KB
Matt
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