Comments | mancomb: Never pour salt in your eyes

mancomb

Never pour salt in your eyes

Feb 25, 2008 11:39

Filed under: work, imaging
I attempted to open a 3.5 GB JPEG 2000 image over a network drive using IM Display from ImageMagick. That was a mistake I will never make again. How the client even managed to get a JP2 file that large is beyond me. It was a high resolution aerial photo of Nantucket, MA but still...with an average compression ratio of 18: ( Read more... )

Comments 7

grahams February 25 2008, 17:34:45 UTC

Based on experience from my former employer, that's not that crazy. If it covers all of Nantucket you could clearly get crazy image sizes...

mancomb February 25 2008, 18:24:36 UTC

I just found out that they say they used 20:1 JPEG 2000 compression. That would make the source TIFF file 70 GB...

Opening TIFF image, please insert Blu-ray disk 2...

grahams February 25 2008, 19:20:28 UTC

I know this blows your mind, but that's small....

mancomb February 25 2008, 19:29:25 UTC

It's certainly the largest we have had here. I hope it looks good in our site.

mancomb February 25 2008, 20:34:48 UTC

Google satellite image

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notafluffybunny February 28 2008, 20:53:18 UTC

I just spent about 10 minutes looking at all three images. I clearly see that Virual Earth and the aereal photo are of the same area, but Google earth is either really old or shifted enough where it does not show the right area.

Actually, never mind, it's shifted, I see the same gray somethings with four and two points on the roofs.

mancomb February 28 2008, 20:59:28 UTC

Yeah, it's funny that the Google geocode is so far off. Maybe I typed a different street number by mistake.