TW: Using Imagery in ArcGIS27th of October 2011 - 16.30 to 18.00

held by:

Guenter DoerffelTechnical Marketing LeadSynerGIS Austria (Distributor Austria)g.doerffel@mysynergis.com

The Description in the Agenda

A rough plan for this afternoon

• Images as attributes and attachements

• Single Image Files in ArcGIS for Desktop

• Images/Raster and the Geodatabase- Raster Dataset

- Raster Catalog

- Mosaic Dataset

• Serving Imagery: Image Services

Always included: Whats comming with ArcGIS 10.1

Raster/Imagery as attribute

• Create with ArcGIS for Desktop Standard+

• Any picture will do

• No need for a Spatial Reference

• Only one raster column per Table• Only one raster column per Table- Use relationship if you need more than 1:1

• What can you do?

Raster geladenKlick in FeldSee it!

Raster/Imagery as attachement (new in 10!)

• Anything will do

• No need for a Spatial Reference

• Relationship class to a feature class

• Objects stored in Geodatabase• Objects stored in Geodatabase

• Opened with „System application“

• Usable in WebMapping Apps

Add a raster attribute to a table

Use it � where you see it

DEMO No. 1

Add attachements to a feature class

Use it � where you see it

Using (single) File-based raster (datasets)

• Access in ArcGIS 10 is unified by GDAL-libraries(Geospatial Data Abstraction Library – gdal.org )

• Format Support for read/write differs:- Read: Lossless and lossy

Write: predominantly lossless formats- Write: predominantly lossless formats

• „A Raster“ = the Image PLUS other files:- *.ovr (Overviews/Pyramids) … used to be *.rrd

- *.prj/prjx*.??w … Projection/WorldFile

- *.aux.xml … Statistics, Spatial Reference, Metadata

• Many settings in ArcMap/Advanced Settings

Direct Access using ArcGIS and File based raster

• Many Improvements with Default-Formats- Compression

- Standards- TIF (vs IMG)

- .OVR (vs .RRD)- .OVR (vs .RRD)

- Stats (.aux.xml)

• Imporved GPTools- Recursive Pyramids

- Statistics

� Optimized Access for existing and new/future formats

Settings for Images

• ArcMap Settings for Raster- In ArcMap Settings

- In GP Environment

• Advanced ArcMap Settings- More here

10.1: ArcMap Options - RasterExtended Defaults

• More Raster Properties used

• Adjust to meet your preferences

Optimized Raster display

• Optimize Display-Performance

• Uses Caching/Threading

• For all Types of Imagery - Local Raster

- “Mosaic Dataset”

- Image Services

• Dynamic Properties remain

• Use as “Operational Layer”

• Hardware-Accelleration supported

The “Image Analysis” Window …

• Settings at your fingertips - Contrast, Brightness, Gamma, Stretching

- Dynamic Range Adjustment

- Transparency

• Simple Interpretation- Zoom 1:1, Top Up

- Difference

- Sampling

• On-The-Fly Processes- Orthorektifikation, pan-sharpening

- Clip, Mosaicking

- NDVI, Shaded Relief � “One-Click” Access for frequently used functions

… in 10.1 becomes a Image Analysis Window +3 mayor enhancements

• Interaktive Stretch (1)

• Raster Function Button (2)

• Mensuration (3)

12.4m

Raster Settings you should be aware of

Optimized Display (vs. Basemap-Layer)

Image Analysis Window (10.1)

DEMO No. 2

Image Analysis Window (10.1)

A raster type is more than a raster dataset …

• Introducing the „raster type“- Supported (only) by Mosaic Datasets

- identifies metadata (georeferencing, acquisition da te, sensor type) along with a raster format

- Files, - Files, tables, WebServices products(like satellitesensor)

- Online Help

… and with 10.1 becomes the „Raster product“Available to everybody everywhere in ArcGIS

• Very easy to handle

• „Image Intelligence“ massively improved!

10 10.1

Load a Raster product into ArcGIS for Desktop

A LITTLE 10.1 DEMO

Images as Geodatabase-Datasets

• Raster-Dataset- One Entity – managed in the Geodatabase

- Often the result of a mosaicking process

- Same content in different resolutions (pyramids)

• Raster-Catalog- Group of Raster-Datasets

- Client regards them One Entity

- Every part in fact is a Raster-Dataset

- Every part can be different

- Managed/Unmanaged

- Can be time-aware

Raster-Dataset

• For a long time THE element to store rasters in a GDB

• Major properties:- Pyramids, Spatial reference, Statistics

• Fast display at all scales• Fast display at all scales

• Stored with a tiling schema- Required – not apparent to the enduser

- Tilesize defined when loading

- Pyramids then tiled, too

• Always somehow converts/resamples!

• Mosaic- Initial tiles are „glued“ together – overlap gets lost

• Metadata only on the dataset level

ImageImage ImageImage

MosaicMosaic

Raster pyramids always show the same content ..10 m

Level 0

20m

Level 1

A

Level 1

40 m

Level 2

80m

Level 3

Different cell sizes

Raster-Catalog

• Grouped Raster-Datasets

• Storage of Footprint-Polygons with their Raster-Datase ts

• Managed or Unmanaged- Unmanaged

- Only a file location reference gets stored

- Supported in Personal- and File-GDB

- Advantage: base-Data unchanged

- Managed- Pixel converted into Geodatabase

- Supported in all GDB-Types

- Base-Data gets changed

• Usable for Animations/Time-Series

…by the way – still exists

• Raster-Catalog based on a simple table- Any Table (in or out of Geodatabase)

• Must-structure: IMAGE, XMIN, YMIN, XMAX, YMAX- IMAGE

- full Path / relative Path / UNC Path or environment -variable to the source of the data

• Display-Order is table record order

„Best of breed“: The Mosaic Dataset

• Combines advantages of Unmanaged Catalog and Raster Datset

• Can combine data of different resolution, color model, spatial reference, meaning … in different scales

Knows about raster types /products• Knows about raster types /products

• Knows about (on the fly) raster functions

• Can dynamically mosaic using different methods

• Allows access to table for selection, download, upload (1 0.1)

• Can create Referenced Mosaics (derived results)

• Is time-aware

Organizing rasters as a mosaic dataset

Image 1 Image 2

Image 4Image 3

Source images Mosaic dataset

A

Overviews are not (always) pyramids ….10 m

Level 0

20m

Level 1

A

Level 1

40 m

Level 2

80m

Level 3

Different cell sizes

The structure of a MosaicDataset

• Group-Layer display in ArcMap:- Boundary

Whatever you want the extent of theService to be

- Footprint- FootprintThe extent of participating imagesCan be changed!

- (Seamline)Where mosaicking is to take place

- ImageThe Image delivered – with manyadditional settings

Mosaic methods control display orderClosest to Center

Area of Interest

A

Mosaic methods control display orderClosest to Nadir

Nadir

A

Mosaic methods control display order

With Cloud coverWith no Cloud cover

By Attribute

By Acquisition DateBy Cloud cover

A D

Mosaic Dataset Properties

Different mosaic methods

Dynamic compression

DEMO No. 4

Dynamic compressionRaster functions

Referenced Mosaic

Serving single raster datasets

• Can be done without Image Extension

• Allows IMAGING, WCS, WMS

• Set Size, Resampling, compression on server

Serving mosaic datasets

• Many more server-sided settings:- Size

- Number of rasters

- Resampling

Compression- Compression

- MosaicMethods

- Table/catalog access

- Metadata level

- Fields

- Download

- Upload (10.1)

- Mensuration (10.1)

Raster Dataset Properties on the server

Mosaic Dataset Properties on the server

Client effects

DEMO No. 5

Client effects

A sample web client

Caching Image Services

• Why?- Reduce server load

- No need for on-the-fly processes

- Provide max. compatibility with other cached services

The „Web -feeling “ needs to be there- The „Web -feeling “ needs to be there

• How?- 10: Always via an mxd-based service

- 10.1: Default of ImageService can be cached

Me gustaría dar las gracias aI would like to thank

• Tracasa

• Aurensis

• la Junta de Andalucía

• el Instituto Geográfico Nacional

• y a Esri España• y a Esri España

por su colaboración en los datos usados en este wor kshop

for their collaboration with the data used for this presentation

Questions ???g.doerffel@mysynergis.com

Thank You