Detecting vertical planes in ARCore

You can refer to this issue on official Google AR Core github repo https://github.com/google-ar/arcore-unity-sdk/issues/31 . This feature is released in ARCore SDK for unity (v1.2.0) SDK link as mentioned in the issue. Hope this helps :)

Since ARCore 1.2 was released we can use four values of Config.PlaneFindingMode enumeration.

Here's how a code looks like:

public static final Config.PlaneFindingMode DISABLED
// Plane detection is disabled.

public static final Config.PlaneFindingMode HORIZONTAL
// Detection of only horizontal planes is enabled.

public static final Config.PlaneFindingMode VERTICAL
// Detection of only vertical planes is enabled.

public static final Config.PlaneFindingMode HORIZONTAL_AND_VERTICAL
// Detection of both horizontal and vertical planes is enabled.

Hope this helps.