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If you added a poor or incorrect control point, you could select it in the table and click the Delete Link Selected button to remove it. You could also simply uncheck it, so that it is no longer factored in to georeferencing calculations. You would then want to continue adjusting your control points until you achieved the desired result.
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- When you are satisfied with your control points, in the ribbon, on the Georeference tab, click the Save button.
- On the Georeference toolbartab, click either the Save Close Georeference button.
Notice that the control points have disappeared.
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Before beginning this tutorial, there was only one aerial file: aerial.jpg. During the tutorial, you generated the three two additional files. The JGWX file contains the spatial referencing information that you just created. Because this new file has been created, the image will now line up spatially whenever you add it into a new data frame. In other words, you only need to georeference a layer once.The OVR file contains an index of the image that was created when you selected to build pyramids upon first loading the image. The pyramids provide a quicker rendering of the image when you zoom in and out in the Map Display window. The XML file contains the metadata used by ArcCatalog to describe the newly georeferenced aerial image. If you were to delete these three two accessory files, the image would no longer be georeferenced and would be returned to its original state.