Zetamari Mosaic Artworks
by：Heng Xing 2020-07-23
A mosaic dataset manages its raster information in a desk, the place datasets will be listed and queries can be performed on the collections. There are geoprocessing instruments within the Mosaic Dataset toolbox to create and edit mosaic datasets. Mosaic datasets are used to manage, show, serve, and share raster data. When you create a brand new mosaic dataset, it is created as an empty container in the geodatabase with some default properties to which you'll add raster knowledge.
For example, when specific raster information merchandise (such as from a satellite tv for pc sensor) are added to a mosaic dataset, some features are routinely added to the raster information. As talked about above, you can add raster datasets which might be used to generate an orthorectified, pan-sharpened picture. To generate this image, each a pan-sharpen perform and orthorectification operate could be utilized to the raster data when it is accessed.
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You should still need the orthorectification operate for use, however you could need to generate a vegetative index. For this, you would use the Band Arithmetic perform, or the NDVI operate. The raster knowledge in a mosaic dataset doesn't need to be adjoining or overlapping, however can exist as unconnected, discontinuous datasets. For instance, you possibly can have pictures that utterly cover an space, or you can have many strips of pictures that may not be part of collectively to kind a steady image, such as along pipelines. A mosaic dataset is created in a geodatabase and might have raster datasets added to it instantly, or it can be created utilizing a variety from an present mosaic dataset.
This is advantageous, because it saves disk area, since you are not required to store both supply and preprocessed datasets. Additionally, should you wanted to course of the same information in another way, you can add the same data to a unique mosaic dataset and apply different functions.