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Virtual
Oracle GeoRaster roadmap deimos
10gR1(2003)
First version
interleaving
Georeferencing
Pyramids
Raster loader, viewer and exporter
10gR2(2005)
Raster compression/decompression
Geo Raster objects in other schemas
Enhaced geoRaster tools
11gR1(2007)
Automatic DML trigger creation
SDO GEOR ADMIN
Bitmap masks
NODATA ranges
Empty raster blocks
Random blocking size
New functions, procedures and other features
11gR2(2009)
Java APl
GCP Support
Raster reprojections
Optimized blocking
Grid interpolations
Polygon-based clipping in queries
New functions, procedures and other features
FOSS4G 2010
Barcelona
2010VCDTI
Cen ro para el Desarrollo
Tecnologico industrial
spaa PostGIS WKT Raster roadmap deimos
0.1.6d(Feb2009)
First version
Type definition
Canonical input/output
GIST index support
Raster loader (gdal2wktraster)
0.1.6k(Aug2010)
Get/set raster properties
Intersect raster&geometries
Register out db rasters
Get metadata for raster and bands
Convert between world and raster coords
Set and know true nodata values
Get/Set pixel values
GDAL r/o basic driver
0.24(Pred.Nov2010)
Set raster rotation
Reproject rasters
Export raster to standard formats
Validate raster data
Topological operators
MapAlgebra, reclassify
Edit raster data on db
Full GDAL driver
http://trac.osgeo.org/postgis/wiki/wktraster/planningandFunding
FOSS4G 2010
Barcelona
2010VCDTI
Cen ro rara el desarrollo
Tecnologico industrial
Espai
Virtual
Main characteristics: Data type deimos
Oracle GeoRaster: 2 related data types
BLOB
Eeoraster
column
block
cell
sp。 GEORASTER table
SDO RASTER table
PostGIS WKT Raster: 1 data type
Raster pIxel
Reuter
eder
Antar eat
Ra时 tr column
WKT Raster table
FOSS4G 2010
Barcelona
5
2010VCDTI
Cen ro para el Desarrollo
Tecnologico industrial
Espai
Virtual
Main characteristics: Georeferencing deimos
Oracle Geo Raster
SDO GEOR&STER
table
R
aster
d
SDO RASTER
Georef inform ation
Georef infomation
Georef, information
Raster data
≤ DO RASTER
t
C路ih是
只 aster data
D。 RASTE
PostGis WKT Raster
尺 aster tat|e
尺 aster column
GEonet inta
≤t≌ t dat
e武
P【d改
FOSS4G 2010
Barcelona
6
2010VCDTI
Cen ro para el Desarrollo
Tecnologico industrial
Espai
Virtual
Main characteristics: Indexing deimos
Oracle GeoRaster: Creates a spatial index(R
Tree index on the spatial extent of the
GeoRaster object
PostGIS WKT Raster: Creates a GiST index on the
raster column using convex hull
FOSS4G 2010
Barcelona
7
2010VCDTI
Cen ro para el Desarrollo
Tecnologico industrial
Espai
Virtual
Main characteristics: Pyramids deimos
Oracle geoRaster: Reduced-resolution versions of
rasters can be generated using
5 resampling
techniques. The pyramids are stored in the same
raster data table as the geo raster object with the
same srs than the original one
PostGIS WKT Raster: GDAL-provided pyramids are
generated on loading time at desired levels. The
pyramids are stored in different tables than the original
raster
FOSS4G 2010
Barcelona
8
2010VCDTI
Cen ro para el Desarrollo
Tecnologico industrial
Espai
Virtual
Main characteristics: Metadata deimos
Oracle GeoRaster: metadata are part of the
SDO GEORASTER object, and follow a XMl
schema
PostGIS WKT Raster: The metadata is packed
with the raster data, like the georeference
information Only basic metadata is stored
(upper left corner, width, height,
pixel size, skew, srid and numbands)
FOSS4G 2010
Barcelona
9
2010VCDTI
Cen ro para el Desarrollo
Tecnologico industrial
tana Main characteristics: Open specs deimos
Oracle GeoRaster: the specs for sdo georaster and
SDo RASTER objects are open this is really important
to allow third party tools to provide capabilities not
implemented in the server, like spatial analysis.
PostGIS WKT Raster: Uses WKT/WKB format for
representing data Is a open specification too
FOSS4G 2010
Barcelona
10
2010VCDTI
Cen ro para el Desarrollo
Tecnologico industrial
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