Pixelate a confidential region

Disponible con licencia de Image Analyst.

If there is an area in your multispectral or panchromatic imagery that is confidential and needs to be obscured, Pixel Editor can be used to achieve this. There are several operations that can obscure confidential areas: Blur , Pixelate , Redact , and Set NoData . In this workflow, we will use the Pixelate option to obscure a confidential area from showing the full pixel resolution of the source data.

The workflow will follow these four steps:

1. Start a Pixel Editor session.
2. Create the region you want to edit.
3. Pixelate the region.
4. Save your edits.

Start a Pixel Editor session

El Editor de píxeles solo puede editar una capa cada vez por cada vista de mapa. La capa contextual empleada para iniciar la sesión del Editor de píxeles es la única capa que se puede editar en esa vista de mapa. Para editar otra capa del mapa, primero debe cerrar el Editor de píxeles, seleccionar la otra capa en el panel Contenido y volver a abrir el Editor de píxeles para operar en esa capa.

1. En el panel Contenido, seleccione la capa de dataset ráster multiespectral que desea editar.

   El Editor de píxeles solo es capaz de editar fuentes de dataset ráster.

2. Haga clic en la pestaña Imágenes.
3. Haga clic en el botón Editor de píxeles .

Ahora puede editar su dataset ráster multiespectral con el Editor de píxeles.

Create the region you want to edit

Edits using Pixel Editor are performed on the specified region. The Region drop-down menu allows you to choose the tool you want to use to specify your region. The Region Mode allows you to create a region, or modify an existing region. In this workflow example, we will specify a region to pixelate, but we will not obscure the road that intersects the region.

1. Zoom in to the area where you want to pixelate your data.
2. In the Pixel Editor tab, click the drop-down arrow below Region Mode, and choose New .
3. Click the drop-down arrow below Region, and choose Polygon .
4. Draw a polygon around the area of interest; double-click to close the polygon.

   

5. Turn the Retain Regions toggle button on. This will ensure that there is more than one region being drawn on the map.
6. Use the Region polygon tool to delineate the area where the street goes through the region you want to pixelate. This is the area we want to exclude from the pixelate operation.

   

Pixelate the region

Now that we have created our region and the area we want to exclude, we can pixelate our confidential area.

1. Click the Operations drop-down menu, and choose Pixelate from the gallery.

   This will open the Pixel Editor Operations pane.

2. Click the Select tool from the Region group.
3. Select the first region that you created, since that is the region we want to pixelate.
4. In the Pixel Editor Operations pane, choose Pixelate, then set the Factor you want to use; higher values will create a coarser pixelated effect. Use the default value of 8.
5. Check the Exclude Region Intersections check box. This will exclude the road that intersects our selected region from being pixelated.

   

   The region has been pixelated, with the road excluded from the operation.

Guardar los cambios

Para confirmar las ediciones y devolverlas a la fuente de datos, debe guardarlas.

1. En el grupo Guardar, haga clic en el botón Guardar .

   Para guardar sus ediciones sin afectar a los datos de origen, guárdelas en un nuevo archivo. En el grupo Guardar, haga clic en el botón Guardar como y especifique una ubicación y un nombre de archivo para el nuevo archivo.

2. Cuando termine de editar el dataset ráster, haga clic en Cerrar Editor de píxeles en el grupo Cerrar.