Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-13 Thread Even Rouault
urday, October 05, 2013 6:31 AM > To: mapserver-users@lists.osgeo.org > Subject: Re: [mapserver-users] preparing orthos for Mapserver? > > Hi, > > Have also definitely a try with JPEG compressed tiffs. You can save 90% of > the disk space with nominal effect on speed and quality, b

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-13 Thread Worth Lutz
t: Re: [mapserver-users] preparing orthos for Mapserver? Hi, Have also definitely a try with JPEG compressed tiffs. You can save 90% of the disk space with nominal effect on speed and quality, but that depends on your hardware and imagery. It is still worth testing. The command to use is gdal_translat

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-07 Thread Julien-Samuel Lacroix
o.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Rahkonen Jukka Sent: Saturday, October 05, 2013 6:31 AM To: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] preparing orthos for Mapserver? Hi, Have also definitely a try with JPEG compressed tiffs. You can save 90% of the disk

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-06 Thread Worth Lutz
users-boun...@lists.osgeo.org] On Behalf Of Rahkonen Jukka Sent: Saturday, October 05, 2013 6:31 AM To: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] preparing orthos for Mapserver? Hi, Have also definitely a try with JPEG compressed tiffs. You can save 90% of the disk space with no

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-06 Thread Frank Warmerdam
On Sun, Oct 6, 2013 at 12:41 AM, Andrea Aime wrote: > On Sat, Oct 5, 2013 at 4:21 PM, Frank Warmerdam wrote: >> >> Great advice from Jukka, and I'd just note that GDAL >> *will* efficiently pull out reduced resolution images on >> the fly without overviews if you have a file organized >> with a o

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-06 Thread Even Rouault
Le dimanche 06 octobre 2013 11:49:05, Rahkonen Jukka a écrit : > Andrea Aime wrote: > > Hi Frank, > > this is quite interesting. Can you elaborate a bit of what "one block > > scanline" means? E.g., what is the actual tiling structure of this file? > > Does presence of compression affect the abilit

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-06 Thread Rahkonen Jukka
So the amazing file size of that GIS editor software is 600 kB or 601088 bytes to be exact. -Jukka- Rahkonen Jukka wrote: Andrea Aime wrote: > Hi Frank, > this is quite interesting. Can you elaborate a bit of what "one block > scanline" means? > E.g.,

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-06 Thread Rahkonen Jukka
Andrea Aime wrote: > Hi Frank, > this is quite interesting. Can you elaborate a bit of what "one block > scanline" means? > E.g., what is the actual tiling structure of this file? > Does presence of compression affect the ability to do the subsampling? > How about quality of the output? (e.g., is

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-06 Thread Angelos Tzotsos
On 10/05/2013 05:21 PM, Frank Warmerdam wrote: On Sat, Oct 5, 2013 at 3:31 AM, Rahkonen Jukka wrote: Hi, Have also definitely a try with JPEG compressed tiffs. You can save 90% of the disk space with nominal effect on speed and quality, but that depends on your hardware and imagery. It is s

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-06 Thread Andrea Aime
On Sat, Oct 5, 2013 at 4:21 PM, Frank Warmerdam wrote: > Great advice from Jukka, and I'd just note that GDAL > *will* efficiently pull out reduced resolution images on > the fly without overviews if you have a file organized > with a one scanline block even in the year 2013. For > map serving y

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-05 Thread Frank Warmerdam
On Sat, Oct 5, 2013 at 3:31 AM, Rahkonen Jukka wrote: > Hi, > > Have also definitely a try with JPEG compressed tiffs. You can save 90% of > the disk space with nominal effect on speed and quality, but that depends on > your hardware and imagery. It is still worth testing. The command to use is

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-05 Thread Rahkonen Jukka
Hi, Have also definitely a try with JPEG compressed tiffs. You can save 90% of the disk space with nominal effect on speed and quality, but that depends on your hardware and imagery. It is still worth testing. The command to use is gdal_translate -of GTiff -co tiled=yes -co compress=JPEG -co p

Re: [mapserver-users] preparing orthos for Mapserver?

2013-10-04 Thread Stephen Woodbridge
On 10/4/2013 3:45 PM, Worth Lutz wrote: I have a question on preparing a set of orthophoto tiff files for use with MapServer. The orthophotos are 10,000 x 10,000 pixels with 6 in. resolution. Currently I have a tile index pointing to these files. I’m wondering about internal tiling and overlay

[mapserver-users] preparing orthos for Mapserver?

2013-10-04 Thread Worth Lutz
I have a question on preparing a set of orthophoto tiff files for use with MapServer. The orthophotos are 10,000 x 10,000 pixels with 6 in. resolution. Currently I have a tile index pointing to these files. I'm wondering about internal tiling and overlays. Should I process these tiles w