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Using Azure Spatial Anchors allows you to share any information in specific context, time and space. Some of the use cases are having user guides for machinery, inventory information, way-finding applications, educational applications, multi-player games. The evolution of smartphones and near-universal access to the GPS data changed the apps we build and enabled ride-sharing and location- based recommendation applications. Developing with Azure Spatial Anchors will help you deliver contextual data at the right time and place. It will open up new possibilities indoors.
By using anchor relationships, you can create connected anchors in a space and then ask questions like these:
Are there anchors nearby?
How far away are they?
You could use connected anchors in cases like these:
A worker needs to complete a task that involves visiting various locations in an industrial factory. The factory has spatial anchors at each location. A HoloLens or mobile app helps guide the worker from one location to the next. The app first asks for the nearby spatial anchors; it then guides the worker to the next location. The app visually shows the general direction and distance to the next location.
A museum creates spatial anchors at public displays. Together, these anchors form a one-hour tour of the museum's essential public displays. At a public display, visitors can open the museum's mixed reality app on their mobile device. Then, they point their phone camera around the space to see the general direction and distance to the other public displays on the tour. As a user walks toward a public display, the app updates the general direction and distance to help guide the user.
Spatial Anchors allow you to place virtual object in a specific point in your real world. You can think of them as more accurate GPS that works indoors as well as outdoors. Spatial Anchors are available for iOS, Android mobile devices and HoloLens headsets. Azure Spatial Anchors gives you a way to save and share anchor points, so that you can share the virtual objects or information between multiple devices and persist them over time.
In this lesson, you will learn about Spatial Anchors and the use case scenarios of Spatial Anchors:
To share Azure Spatial Anchors, SDK translate the local Spatial Anchor data into Azure Spatial Anchor format and saves it. Similarly, when a different platform asks for the same Spatial anchor data, the device will receive the anchor in the platform's format.
When creating or locating anchors, pictures of the environment are processed on the device into a derived format. This derived format is transmitted to and stored on the service.
To provide transparency, below is an image of an environment and the derived sparse point cloud. The point cloud shows the geometric representation of the environment that is transmitted and stored on the service. For each point in the sparse point cloud, we transmit and store a hash of the visual characteristics of that point. The hash is derived from, but does not contain, any pixel data.