00:05Hi, I'm Adam, a GIS analyst at Esri.
00:09Imagery is core to the work we do as GIS professionals.
00:13And new enhancements in ArcGIS make it much easier to manage large collections of imagery…
00:18…define how those images are viewed by others…
00:22…and it's much easier to take that imagery and share it with others.
00:26Using the new mosaic dataset, we can take collections of images and quickly seam them together and push them out.
00:33We can define how users interact and see that information without changing the source, just how it's viewed.
00:39And new and improved image services make it much easier and faster to take that content and push it out to our audiences.
00:47I'm very excited to show you how we can manage geospatial information using ArcGIS.
00:54This is my study area just north of Casper, Wyoming.
00:58It's called Teapot Dome, and I've collected several images for this area.
01:03And I would like to use the new mosaic dataset to help me manage these images.
01:08I'm going to create a new mosaic dataset.
01:11Mosaic dataset is a hybrid of a raster dataset in a raster catalog.
01:18And it's a new data type in the geodatabase.
01:21I'm going to select a coordinate system that I would like to represent my images, then create this dataset.
01:32So now let's go in and reference, or add references to my images in this dataset.
01:39So I'm going to right-click to do that.
01:41And we'll browse to some NAIP imagery from 2001 that I collected.
01:48These are MrSID images.
01:50I'm just going to select them all and add them right to the mosaic dataset.
01:55Now what's happening is that I'm not duplicating these images.
02:00They're staying in their original source and the mosaic is just managing them from their location on my disk.
02:07So let's drag this in.
02:10We can see the footprints of those images.
02:16And when I zoom in, we can now take a look at the parts that make up a mosaic dataset.
02:22Here we have a boundary extent.
02:24So this is the boundary of the images we just loaded.
02:27We can see on our map right now the green outline representing the footprints for all of the different images we loaded.
02:33And if I turn these off, we can see one seamless representation of our imagery represented here in our display.
02:42Now the real power of the mosaic dataset comes in how it can help us manage our content.
02:48So I'm going to open up the attribute table.
02:51And I know that these are NAIP images, so I'm going to go ahead and calculate a field that defines these as product type equal to NAIP.
03:03I know that these were captured in 2001, so let's go ahead and add a field called Year that will store our capture date.
03:17Fill that with 2001, and there we go.
03:21So we've just added our rasters into the mosaic and we've updated the attribute information for these rasters.
03:29So really, managing this information in the nosaic dataset is just like managing any other spatial information that we would in a GIS.
03:38I'd like to show you a little bit more advanced capability pertaining to the mosaic dataset.
03:44And to do this, I'm going to use another mosaic dataset to add some IKONOS imagery.
03:52Let's go ahead and reference this raw IKONOS imagery.
03:55It's a multispectral product.
03:58And I am going to choose the file type from my drop-down to be IKONOS.
04:03And I'm going to grab an entire workspace full of IKONOS images.
04:07And it's about 10 gigs in size.
04:11So I'm going to select all of these folders, add them in.
04:15Let's define a few raster type properties.
04:18I'd like the mosaic to do some work for me.
04:21I'd like it to read in this multispectral information and give me back a true-color rendering of that.
04:29I can apply a stretch and give it some values that I know work well for this data.
04:36Say OK, and there we go.
04:38Now remember, we're not copying the images over.
04:42They're staying in their location on disk.
04:45The mosaic is just referencing them.
04:49Let's bring in the mosaic to our map and take a look.
04:56A lot of things are happening on the fly right now for me.
04:59And the mosaic dataset is generating that; creating the composites from the multispectral data and doing the pan sharpening.
05:07Now, this is great.
05:09We've taken some raw IKONOS imagery, we've referenced it in our mosaic dataset, and now I can use it here in ArcMap.
05:16But how do I take this imagery and make it accessible to a much larger user base?
05:23To do that is pretty straightforward.
05:24And we're going to use ArcGIS Server to do that.
05:28I am going to right-click on the mosaic dataset that we just created, and I am going to choose the Publish to ArcGIS Server option…
05:38…assign any capabilities I'd like to assign to it, and publish this out as a service.
05:45Once I've done this, this service is now exposed and I can point my users to it so that they, too, can use the images that I have just loaded from this mosaic dataset right into this service.
05:56And they can use it in any of their clients, GIS, CAD, Mobile, or even Web mapping applications.
06:05So as you can see, managing our imagery is just like managing any other spatial data in our GIS.
06:11And now it's much easier and faster to take that information and share it with others.
ArcGIS Managing Imagery
- Recorded: Jun 29th, 2010
- Runtime: 06:18
- Views: 13887
- Published: Aug 25th, 2010
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