Ideally, scenes from different dates and/or sensors should be orthorectified before you mosaic them. You can see subtle color differences and areas where the geometric alignment is not exact (especially with roads). Zoom to the area where the two scenes overlap.You can only do this after showing the scenes. If you click in the display, the footprint for the top-most scene nearest the cursor is highlighted, and the corresponding scene name is selected in the table.
You can select a scene name in the table, and the corresponding footprint will be highlighted in the display. The Show Footprints button is toggled "on" in the Seamless Mosaic panel, and the currently selected scene ( 2004apr13_warp.dat) is highlighted with a border whose color is defined by the Default Selection Color preference. The Process Manager in the lower-right corner of the ENVI interface shows the process of building pyramids for both scenes.īoth scenes and their footprints are displayed. A question dialog appears: "2 scenes need pyramids.The File Selection dialog lists both scenes. Navigate to the folder that contains the tutorial data, and use the Ctrl or Shift key to select the files 2002apr01.dat and 2004apr13_warp.dat.Click the Open File icon in the File Selection dialog.Click the Help button in the lower-left corner of the panel if you have further questions throughout this tutorial. You will set all mosaic options within this single panel. Geological Survey.Īerial photo acquired on 01 April 2002, 0.3-meter resolution, saved to ENVI raster formatĪerial photo acquired on 13 April 2004, 0.3-meter resolution, warped and resampled, saved to ENVI raster formatįrom the Toolbox, select Mosaicking > Seamless Mosaic. In this example, you will mosaic two overlapping scenes of Boulder, Colorado, acquired from different dates. Achieve a consistent color balance between the scenes.Reorder the display of the input scenes.
#Hdr projects 2 tutorial how to
This tutorial demonstrates how to mosaic two scenes with different color variations.
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