Selecting source images

Your first step in creating your mosaic is to select the source images you want.

Source images consist of the raster data you want to mosaic. Typically, source images are overlapping and orthorectified. It is good practice to first review the images to determine which ones are best. Ideally, you want images that fully cover the area of interest (AOI).

All the images, either the ones you add or the ones in the OrthoEngine project from which you initiate creation of the mosaic, will appear in the view pane of the wizard and later in the Mosaic Tool window. The images will be displayed as overlapping footprints with labels.

If necessary, you can enter more than one NoData value for your source images. For example, to specify that channel 1 has a NoData value of -9999, channel 2 is 0, and channel 3 is 255, enter -9999,0,255. You can also, if necessary, skip a channel. For example, to specify that channel 1 has no defined NoData value, but you want to use 0 and 255, respectively, for channel 2 and channel 3, enter ,0,255 (notice the comma before the zero).

To select your source images