Digitize in Oriented Imagery
Create Feature layers using ArcGIS Online
To digitize an object in an image, Oriented imagery requires a feature layer to store geometry of an object in pixel space as well as in ground space.
Steps to create an hosted feature layer through ArcGIS Online:
- Sign In to your ArcGIS Online account.
- Click on Content in the top ribbon.
- Click on Create and select Feature Layer option.
- Select Points feature layer template from Build a layer.
Note: You can select any other feature layer template.
- Enter title, tags, and summary for new hosted feature layer. Eg. Fire hydrants, Oriented Imagery, Fire hydrant locations.
- Once the empty feature layer is created, click on Data tab to add new fields to feature layer.
- Click on Options and select Add Field.
- Add a ImgUrn field. ImgUrn is a field that will be used to store a link back to the image from which the features are being captured.
- Add a ImgGeom field. ImgGeom is a field that will be used to store the geometries of the features in pixel coordinates.
Using feature layer in Oriented Imagery web apps
You can use the demo web apps to load web map/scene which contains the feature layer with an OIC.
- Add the feature layer to any web map or web scene.
- Record your Web map's / scene's item ID—the numbers and letters at the end of the item URL. (For example, the demo web map item URL is https://arcgis.com/home/item.html?id=4c66d26fc1e4457fa0717d45a8asdfdasc, which means the item ID is 4c66d26fc1e4457fa0717d45a8asdfdasc.)
- Paste your webmap’s item ID in the place of the item ID at the end of the example app URL (https://oi1.img.arcgis.com/app/index.html?webmap=4c66d26fc1e4457fa0717d45a8asdfdasc).
You have a feature layer ready to be used in Oriented Imagery apps.
Note:
- You can also create feature layers using ArcGIS Pro / ArcGIS Enterprise.
- The feature layer can also have any other fields. But for digitizing in Oriented Imagery, the feature layer must have ImgUrn and ImgGeom fields defined in the schema.
- You can use the demo web apps to share your OICs with anyone. Once your OIC is published in ArcGIS Online or ArcGIS Enterprise, record your OIC’s item ID and paste your OIC’s item ID at the end of the example app URL (https://oi1.img.arcgis.com/app/index.html?webmap=4c66d26fc1e4457fa0717d45a8asdfdasc&oic=62474223f9464b7aba3fb8cc647basda).
Digitizing features in 2D Oriented Imagery App
- Check the Coverage map box to see the coverage area of the images.
- Select a fire hydrant on the map within the coverage map. Fire hydrants are highlighted as red symbols on the map.
- Click on the Add button in the Vector layer(s) section. This will add the Fire hydrants vector layer to the imagery viewer.
- Minimize the Oriented Imagery widget window by clicking on minimize (-).
- Click on overlay icon in the Oriented Imagery viewer window.
- Check the Fire hydrants box to enable the editing tools.
- Click on + to add features.
- You can either draw a point or a bounding box with point feature layer. To draw an bounding box, click on the Add as labels option.
- Draw a bounding box around the fire hydrant in the image.
- A point feature will be added in the map and a bounding box in the image.
- Click on x button in the Overlays to delete the feature.
- Click on the pink box in the image to delete the feature that we just recorded.