Hi,
Do not imagine anything about JPEG2000 without trying yourself. Theoretically
it is a wonderful image format but obviously so complicated that there are only
a handful of SDKs which are really good and fast. Even they may have
difficulties with JPEG2000 images which are not created with their own
preferred parameters. For example the images from the National Land Survey of
Finland suit well for Kakadu and ECW JPEG2000 but not at all well for MrSID
JPEG2000 based drivers and OpenJPEG cannot open them at all. JPEG2000 code
streams can be reorganized without loosing anything about the quality so
existing images can be converted to suit some certain SDK but once again, there
are not many good tools for that. It is also hard to find information about
most suitable parameters for each SDK. It also depends on the size and type of
source images. It is best to keep your stop watch available, play as much as
you can and measure everything.
It may be that JPIP streams have less variation but I do not know really.
-Jukka Rahkonen-
________________________________
Ronak Patel wrote:
Sounds good Rahkonen,
Looks like there's enough support on the iPhone to render a JPIP stream as well.
http://www.imagemagick.org/script/binary-releases.php#iOS
I'll have to play around with this this weekend and see what I can scrap
together.
I imagine a JPIP stream to the iPhone will be faster than WMS, TMS HTTP Calls??
________________________________
From: Rahkonen Jukka <[email protected]>
To: "'[email protected]'"
<[email protected]>
Sent: Friday, May 25, 2012 10:15 AM
Subject: Re: [Geoserver-users] Non Georeferenced Image Tile Server
Sorry,
I noticed too late that those BitTorrents are ECW files so they are not for
JPIP. I am prepering some new JPEG2000 mosaics but they are not ready yet.
Right now there is whole lot of JPEG2000 orthoimages with attribution-only
license downloadable through this link
https://tiedostopalvelu.maanmittauslaitos.fi/tp/kartta?lang=en
Those JPEG2000 images are created so that they suit well to be used as source
for JPIP servers
-Jukka-
________________________________
Lähettäjä: Rahkonen Jukka [mailto:[email protected]]
Lähetetty: 25. toukokuuta 2012 17:02
Vastaanottaja: '[email protected]'
Aihe: Re: [Geoserver-users] Non Georeferenced Image Tile Server
Hi,
When it comes to JPEG2000 it is worth having a try with Kakadu demo
applications from
http://www.kakadusoftware.com/index.php?option=com_content&task=view&id=26&Itemid=22
Demos can only be used for non-commercial use without buying Kakadu license but
they are of so high quality that it is good to test them for having something
to compare other products with. Demos include both JPIP server and client
(kdu_server and kdu_show). Prepare some test images with PCRL or RPCL
progression order and have a try. Alternatively you can test with these public
domain satellite images. They may well suit for JPIP but I have not tried them
myself.
Europe Landsat mosaic 1.7 GB torrent (originally downloaded from the late
GeoTorrent.org<http://GeoTorrent.org>)
http://laillisettorrentit.net/index.php?page=torrent-details&id=d2c502c1aec3cce0180d92b31721597cbb523751
Finland Landsat mosaic 630 MB torrent (made by myself)
http://laillisettorrentit.net/index.php?page=torrent-details&id=b04ee8123dd8ca6bd6b2870b41d5a936c2362e13
-Jukka Rahkonen-
________________________________
Ronak Patel wrote:
Hi,
I was wondering if someone knows of a good generic image server for
non-georeferenced Images (dumb PNGs and JPEG2000).
Thanks,
Ronak Patel
________________________________
From: Ronak Patel <[email protected]>
To: "[email protected]"
<[email protected]>
Sent: Saturday, May 19, 2012 7:20 PM
Subject: [Geoserver-users] Non Georeferenced Image Tile Server
Hi all,
I was looking into using Geoserver as a generic image tile server but looks
like Geoserver doesn't actually have that capability. The new support I thought
was coming is only for ImageCollections which are randomly served?
I was hoping to use GetCapabilities to load up my list of layers and be able to
treat the "dumb image" as a WMS Layer.
Does anyone know of an easy to set up image tiling server that I could be using?
I have images as png and as jpeg2000.
Thanks,
Ronak Patel
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