Area Selection Icons The following icons are in the Area Selection tab to help you isolate regions in your image pairs:
Select - Choose this icon to select individual regions in the views.
Box Select Region - Click to select all regions that fall within the boundary of the rectangular marquee that you draw. To draw a perfect square, Shift-left hold when drawing.
Create Rectangle Region - Click to create a rectangular region. In the view, drag diagonally from the upper-left to the lower-right corner to create the rectangular region.
Create Polygon Region - Click to create a polygonal region. In the view, click to add each vertex. Double-click or middle-click (depending on how your Polyline/Polygon termination button preference is set) to close the polygon.
Region Grow Tool - Click to select a single pixel from which a region is generated based on the parameters set in the Region Growing Properties dialog.
Create a Region with Corners - Click to create a region by supplying the ULX, ULY, LRX, and LRY pixel coordinates of an area. The Set AOI with Bounding Box dialog opens.