Pixel Editor in ArcGIS Pro

Disponible avec une licence Image Analyst.

Pixel Editor contains a set of tools used to interactively manipulate pixel values for raster and imagery data. It allows you to edit an individual pixel or a group of pixels at one time. The types of operations that you can perform depend on the data source type of your raster dataset.

The Pixel Editor tools in ArcGIS Pro allow you to perform many editing tasks on your raster datasets, such as the following:

• Edit elevation data to fill voids, remove spikes, or remove holes.
• Reclassify pixels, regions, or objects.
• Use preset filters to smooth areas.
• Obscure or redact confidential pixels.
• Remove above ground features to create a bare earth elevation surface.
• Replace a cloudy region with another region of pixels.

Remarque :

Only raster datasets can be edited using Pixel Editor. Raster products, mosaic datasets, and image services are not supported.

Pixel Editor tab

Pixel Editor only edits one raster dataset per map view. To start Pixel Editor for the current map view, click the layer you want to edit in the Contents pane, and click the Pixel Editor button on the Imagery tab. Pixel Editor keeps its focus on the raster layer that was used to enable it. To edit another layer, click Close on the Pixel Editor tab first. Then select the other layer in the Contents pane that you want to work with and click Pixel Editor. The Pixel Editor tab gives you access to all the available tools you can use on that type of raster dataset. Some of the tools will open the Pixel Editor Operations pane, where you can perform tasks on the same region of pixels, or the same task on different activated regions of pixels.

The type of raster data source determines which operations can be performed on your raster dataset. To ensure that your raster dataset will have the proper operations available to it, check and set the Source Type of the raster on the dataset properties. In the Catalog pane, right-click your raster dataset, and click Properties. Under the Raster Information section, check the value for Source Type. For digital elevation models (DEM), digital terrain models (DTM), or digital surface models (DSM), choose Elevation. For thematic or classified rasters, choose Thematic. For all other multispectral or panchromatic raster imagery, choose Generic.

There are two kinds of pixel editing tools: quick edit tools and more complex Operations tools. The quick edit tools immediately perform the edit on your raster layer. The Operations tools have parameters that you need to set to perform the operation. Once you set the parameters in these operations, click Apply to perform the edit.

Le groupe Capture (Capturer) contient les outils Copy Region (Copier la région) et Replace Region (Remplacer la région) . Ces outils visent à copier ou remplacer les pixels du même jeu de données ou d’un jeu de données différent dans la carte. Si vous utilisez un autre jeu de données dans la carte, définissez la couche de carte à utiliser en la sélectionnant dans la liste déroulante Source Layer (Couche source) ; la couche doit avoir la même profondeur de bit que le raster en cours de mise à jour. La couche cible correspond toujours au jeu de données raster que vous mettez à jour.

Le groupe Inspect (Inspecter) contient les outils applicables aux données d’altitude. Locate Outliers (Localiser les points aberrants) met en surbrillance les pixels qui s’écartent statistiquement des valeurs normales, dans la région d’intérêt sélectionnée. Les valeurs de pixels à trois écarts types ou plus de la plage normale de valeurs sont considérées comme aberrantes. Une fois les points aberrants identifiés, vous pouvez utiliser l’outil Outlier Filter (Filtre des points aberrants) pour effacer ces anomalies des données d’altitude. Rechercher le minimum et le maximum met en évidence les valeurs minimales et maximales dans la région d’intérêt sélectionnée. Les pixels minimum sont affichés en vert et les pixels maximum, en rouge. Pour désélectionner les pixels de l’outil Localiser les points aberrants ou Rechercher le minimum et le maximum, cliquez sur le bouton Clear Pixel Selection (Effacer la sélection de pixels) du groupe Inspect (Inspecter). L’option Shaded Relief (Relief ombré) permet de visualiser vos données d’altitude dans leur forme native ou comme un relief ombré. La vue Shaded relief (Relief ombré) peut vous aider à identifier les modifications abruptes ou les subtilités en matière d’altitude qui risquent d’être difficiles à visualiser sur un modèle numérique de terrain (MNT).

The Region group includes various tools to draw or select regions that you want to inspect or edit; regions only perform edits on operations. Region Color allows you to choose the color that will be used to draw your region; keep in mind that the selected region will be highlighted in cyan. Retain Region will keep all of the regions that you create. When the Retain Region button is turned off, the previously created region will be cleared each time you create a region. The Region Mode drop-down arrow allows you to create a region or edit an existing region. The Region drop-down arrow allows you to choose the tool to create or edit an area of interest. You can create as many regions as you want, but editing is only performed on the currently selected region. The selected region is the area that is highlighted in cyan. Use Select to choose the region you want to work on. Use Zoom to zoom into the selected region. Use Clear Selection to unselect the region. The Region Visibility check box allows you to turn off the visibility of the region outlines; this allows you to see raster edits at the edge of the region. Remove removes the currently selected region. Remove All removes all the regions in your map.

You can use the following four Region Mode options to help you create or edit your region:

• New —Use this mode to create a region.
• Add To —Use this mode to edit an existing region by adding to the selected region.
• Remove From —Use this mode to edit an existing region by removing some of the region.
• Intersect —Use this mode to create a region only where the regions all intersect.

There are six Region tools as follows:

• Rectangle —Draw a rectangle to create a new region or edit an existing region.
• Polygon —Draw a polygon to create a new region or edit an existing region.
• Lasso —Draw a free-form shape to create a new region or edit an existing region.
• Circle —Draw a circle to create a new region or edit an existing region.
• Feature to Region —Select an existing feature to create or modify an existing region.
• Segment to Region —Select a segment to create or modify an existing region.

The Edit group provides you with the tools you can use to edit an area of interest interactively. The tools that are available depend on the data source type you are editing. Imagery, such as multispectral and panchromatic, will have different editing capabilities than thematic data or elevation data.

Vous pouvez utiliser le bouton Undo (Annuler) pour invalider la dernière action réalisée à l’aide des outils figurant dans l’onglet Pixel Editor (Éditeur de pixels). L’action d’annulation peut être effectuée en appuyant sur Ctrl+Z ; ce raccourci permet également d’annuler des actions effectuées dans la fenêtre Pixel Editor Operations (Opérations de l'éditeur de pixel). Vous pouvez utiliser le bouton Redo (Rétablir) pour invalider l’action d’annulation réalisée à l’aide des outils figurant dans l’onglet Pixel Editor (Éditeur de pixels). L’action de rétablissement peut être effectuée en appuyant sur Ctrl+Y ; ce raccourci permet également de rétablir des actions effectuées dans la fenêtre Pixel Editor Operations (Opérations de l'éditeur de pixel).

The Edits Log displays the list of the edits that you performed on your raster dataset layer. For more information about the Edits Log, see Edits Log tab.

The Save group gives you the option to save or discard your edits. The Discard button will undo all of the edits that you performed and are not committed yet. The Save button allows you to commit your edits to the current layer that you are editing. The Save as New button allows you to save your edits to a new raster dataset. This is helpful if you do not want to overwrite your source data, or your data source is a format that is not writable.

Remarque :

It is recommended that edits to datasets in .MRF format be saved to a new raster dataset. See Overwriting an MRF for more details.