android - ARCore – 超过 24 小时的云 anchor 或超过 7 天的特征点

Question

是否可以在 24 小时后访问 Cloud Anchors 和/或重新激活功能点？

Answer 1

根据谷歌 documentation :

In ARCore 1.20 and later, Cloud Anchors can be resolved for 365 days after they are hosted. In versions of ARCore earlier than 1.20, Cloud Anchors could be resolved only for 24 hours after they were hosted.

如果您使用的是 ARCore 1.12 ... ARCore 1.19 – 24 小时后仍然无法访问云 anchor 。点云也在 7 天后被丢弃。您可以使用自己的云 anchor 托管服务，但在这种情况下，您将无法使用 ARCore 云 anchor API。

Once an Anchor is hosted successfully, the anchor becomes a Cloud Anchor and is assigned a unique Cloud Anchor ID. After this it lives twenty-four hours. Anchor IDs are exchanged using Firebase Realtime Database.

anchor 在服务器端根据存储的稀疏点图进行解析。