Available with Image Analyst license.
Use the Replace Region tool to cover a region with another block of pixels. It is similar to the Pixel Editor Copy Region tool, except you first choose the region you want to replace. This is useful when replacing a region that you want to improve. For example, you can replace an area of cloud cover.
The workflow is as follows:
- Start a Pixel Editor session.
- Replace a region.
- Save your edits.
Start a Pixel Editor session
Pixel Editor can only edit one layer at a time per map view. The contextual layer used to start the Pixel Editor session is the only layer that can be edited in that map view. To edit another layer in the map, you must first close Pixel Editor, select the other layer in the Contents pane, and reopen Pixel Editor to operate on that layer.
- In the Contents pane, select the raster layer to edit.
- Click the Imagery tab.
- Click the Pixel Editor button
.
Replace a region
In the Pixel Editor session, you can replace the cloudy region. In this example, you have an overlapping raster that you will use to replace the clouds.
- Zoom in to the area where you want to replace a region of data.
- On the Pixel Editor tab,
click the drop-down arrow below Region Mode, and choose New
. - Click the drop-down arrow below Region, and choose Polygon
. - Draw a polygon around the cloudy area.
- Ensure that the Source Layer drop-down list is set to the correct layer, which is the layer that is not being edited.
- Click the
drop-down arrow below Capture, and choose Capture to replace
.If there is no selected region when you choose Capture to replace, you can create a polygon region.
A small yellow circle appears in the center of the polygon.
- Click and hold the mouse button on the circle, and drag it to the area on the image where you want to capture the replacement pixels.
In this case, you want to use the same location using the other layer in the Contents pane.
- Optionally, color correct or blend the region while it's in preview mode.
Color matching and blending are only available for multispectral and panchromatic imagery.
- When you're finished, double-click the display to accept the update.
Save your edits
To commit your edits back to the data source, you must save them.
- In the Save group, click the Save button
.To save your edits without affecting the source data, save to a new file. In the Save group, click the Save As button
, and specify a location and file name for the new file. - Click Close Pixel Editor
in the Close group when you finish editing the raster dataset.