![]() ![]() To create ROIs from geometry, draw shapes or mark points on the raster layer. ![]() Grow ROI Polygons Using the Magic Wand Tool.The following are described in this section: The ROI layers will contain projected coordinates that can display with other projected imagery, and projected ROI layers will display on top of an existing RPC image without reprojecting the RPC image. For more information on the rules that determine when a pixel is included in an ROI, see the ROI Pixel Inclusion Background topic.ĮNVI performs a real-time orthorectification for ROI layers created on top of an RPC image. When you define an ROI, you specify the pixels of an image that will be in or out of the ROI. To create and manage ROIs, click the Region of Interest (ROI) Tool button on the toolbar. You can use ROIs for processing in some ENVI tools, such as to extract statistics for classification. Regions of Interest (ROIs) are selected samples of a raster, such as areas of water, that are identified for a particular purpose. ![]()
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