From: Mxsmanic on
Martin writes:

> which particular destabilising results are you referring to?

The usual manifestations are strange application and system crashes.

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From: Mxsmanic on
Stanislas de Kertanguy writes:

> Is that true for all antivirus software and all operating systems ?

Generally speaking, yes. Most operating systems don't have antivirus
software, however.

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From: Mxsmanic on
barney2(a)cix.compulink.co.uk writes:

> In what circumstances can the press card be withdrawn?

Failure to continue meeting the criteria for having it.

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From: Mxsmanic on
Richard writes:

> If anyone who wanted to gain access to a demonstration needed a press card,
> then it wouldn't be very public.

Sometimes that is the objective.

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From: didier Meurgues on
didier Meurgues a écrit :

> Mxsmanic a écrit :
>
> > Gregory Morrow writes:
> >
> > > Are the roofs of the White House and it's directly - adjoining
> > > buildings blanked - out...???
> >
> > Some of the roof area on the White House has been retouched on Google
> > Maps. It's not a very good job.
> >
> > I just tried Geoportail; the image quality is almost unusably poor,
> > and looks like a sick joke compared to Google Maps. And this is for
> > the center of Paris! The site is also designed more poorly and the
> > response time is worse. If they can't do it right, why don't they
> > just give up?
> >

I'VE FOUND THAT :
http://www.npoc.nl/EN-version/satelliteinfo/satellitetabel.html AND
MODIFIED MY FORMER POST.

-=-=-=-=-=-=-

What about 1 Observatory circle Washington DC and a comparison for 55
rue du Faubourg Saint Honoré Paris or 57 rue de Varenne Paris.
They have not yet installed a direct link for address search (only for
communes) on Geoportail. So you must choose : Plus de service/pages
jaunes/villes en direct/vues aérienne to find the address search
engine...

Hi,

According to WIKIPEDIA, « Google Earth accuracy : Most land areas are
covered in satellite imagery with a resolution of about 15 m per pixel
[LandSat 7 ?], and some population centers are also covered in aircraft
imagery (orthophotography) of several pixels per meter [until 0.125 m
?]. Oceans are covered in much lower resolution. »

I've made again... a little (approximative) survey. SORRY !!! Here
are only the best results found on the web in each category, by level
of resolution + IGN and SPOT IMAGE since... France is here
concerned..., but France is not the only european country to open this
kind of free geographical website :

AERIAL PHOTOS (orthophotography) :

Others « free as well » (i.e. : zoom over large zones) :

GEOCONTENT (DE) : 0.2 m (Berlin) ; 0.5 m (virtually all Germany) colour
(but with green lines) ; 3 D : http://www.dlkviewer.de .

AERODATA (BE) : 0.2 m colour (Antwerp-Brussels corridor) ; 3 D :
http://www.aerogrid.be .

USGS (US) through NASA WORLD WIND (future DIGITAL EARTH ?) : 0.25 m
colour (main US cities, N.Z) and 1 m black & white ; 3 D.

IGN (FR) : GEOPORTAIL : 0.5 m colour (all France and part of french
oversea territories) ; 3 D in Octoberr 2006.

« Paying » (i.e. : without zoom found) :

SANBORN (US) : 0.03 m (client requiring) ; 0.15 or 0.30 m (main cities)
colour ; 3 D.

PHOTOGRAMMETRIE PERRINJACQUET (CH) 0.05 to 0.25 m colour (6 cantons +
cities) ; 3 D.

THE GEOINFORMATION GROUP & GETMAPPING (UK) : 0.0625 m ? (no
ultra-precise black zone visible on the general map) ; 0.125 colour (63
% of UK + cities) ; 0.25 m colour (most of UK) ; 3 D.

Etc...

Governmental :
Germany : http://www.bkg.bund.de
New-Zeland :
http://www.linz.govt.nz/core/topography/aerialandorthophotos/index.html
Japan : www.gsi.go.jp/ENGLISH, etc...
or not www.imageone.co.jp, etc...

SATELLITE PHOTOS :

http://www.npoc.nl/EN-version/satelliteinfo/satellitetabel.html

Spy satellite :

ANRO (American National Reconnaissance Office) : KH-13 satellite :
resolution 0.04 m ? black & white (classified, but not in the NPOC
tables !) So, Mixi watch hands (aiguilles) are at least 4 cm long...

ANRO : KH-12 : 0.15 m black & white (classified, but not in the NPOC
tables !).

Etc...

French one : HELIOS 2A : 0.5 m (classified).

Public release (paying) :

DIGITALGLOBE (US) :QUICKBIRD : 06 - 07 m black & white (panchromatic) ;
2.4 - 2.8 m colour (multispectral).

ORBIMAGE (US) : ORBVIEW 3 : 1 m black & white ; 4 m colour.
To be replaced in 2007 by ORBVIEW 5 : 0.41 m black & white ; 1.64 m
colour, then the MOST ACCURATE.

SPACE IMAGING (US) or ? SIC (Satellite Imaging Corporation) : IKONOS 2
: 1 m black & white ; 4 m colour.

KARI (Korean Aerospace Research Institute) : KOMPSAT 2 : 1 m black &
white ; 4 m colour ; « merged » 1 m ? (made by EADS, the camera by a
german company, and normally launched TOMORROW !).

NSPO (Taiwan National Space Organisation) FORMOSAT 2 : 2 m black &
white ; 8 m colour (made by EADS).

French one : SPOT IMAGE : SPOT 5 : 2.5 m black & white ; 10 m colour
;.« merged » 2.5 m ? « seems » possible, see last image in
http://www.geoimage.com.au/geoweb/spot/spot_overview.htm or
http://www.spot.com/html/SICORP/_401_402_403_404_.php
To be replaced in 2008 by : PLEIADES : 0.7 m black & white ; 2.8 colour
; « merging » ? (= actual QUICKBIRD resolution) :
http://smsc.cnes.fr/PLEIADES/index.htm (IGN will be a « user
organisation » of PLEIADES images but I don't know if they will
up-date GEOPORTAIL with them).

NASA WORLD WIND (future DIGITAL EARTH ?) (US) : 15 m black & white ; 30
m colour (Landsat 7).

TERRA METRICS (US) : 15 m colour ? or like previous one.

BUT MANY... are to be launched this very year 2006 by :

Italy : COSMO-SKYMED : 0.7 m black & white ; 2 m colour. Then the 2nd
most accurate on the market : FORZA ITALIA ! (& Russia ?)
Israel-US : EROS B1-5 : 0.7 m black & white ; 4 m colour.
UK : DMC 2 : 2.5 m black & white ; 5 m colour.
Japan : ALOS : 2.5 m black & white ; 10 m colour.

Etc...

So, on Google Earth, ; the most precise zones (urban areas notably) are
apparently orthographic with a 0.125 to 0.25 m ? resolution (0.6 m with
satellite ?). Paris was apparently up-dated with The Geoinformation
Group 0.125 m resolution images, which are 4 times more precise than
Geoportail with its 0.5 m/pixel resolution. In fact the difference
seems higher (8 times ?) but it doesn't seem to look like 0.0625 m
resolution images and I doubt that the KH-13 key hole satellite was
used for this Paris area coverage... :+) So how can be explained this
incoherence, or the difference of quality with the corresponding IGN
paper photos ?

The IGN could nevertheless later make some more accurate aerial
orthophotos above the main french cities to complete Geoportail, or «
perhaps » buy too, meanwhile, the Geoinformation Group images for
Paris. The 3 D should be available this October, apparently for all
France. The actual possibility to make a search by city name, to easily
switch between image, coloured relief (rather funny) and topographic
map is already quite usefull. I precise that a left clic on the image
enlarges it while a right clic reduces it. But it's impossible to get
a larger view than a 80 km side sq