Methods and systems for controlling a virtual interactive surface and interactive display systems

A system for controlling a virtual interactive surface in a scene, wherein the virtual interactive surface comprises a surface for displaying information and one or several virtual sensors positioned with respect to the surface, wherein a virtual sensor comprises data representing a geometric form, data representing a position in the scene and data representing one or several trigger conditions, the system comprising:

• a scene capture sub-system configured to capture a scene and generate a first data representation of the scene;
• a virtual sensor sub-system in operative communication with the scene capture sub-system, the virtual sensor sub-system comprising an interface for receiving data representing the first data representation of the scene, a processor, and a memory operatively coupled to the processor, wherein the virtual sensor sub-system is configured to perform a method for detecting activation of each virtual sensor in the scene, the method comprising:
• receiving point cloud data representing surfaces of objects of the captured scene and comprising data representing non-empty points of a first volume area corresponding to the captured first data representation and respective associated position in the first volume area;
• and
• determining whether one or several of the virtual sensor trigger condition is/are fulfilled based on an analysis of the captured first data representation in an area corresponding to the geometric form and position of the virtual sensor,
• wherein for a first virtual sensor said analysis comprises comparing a number of non-empty points whose position falls in the volume area corresponding to the geometric form and position of said first virtual sensor is greater to a triggering threshold.

A non-transitory computer-readable storage medium storing a computer program that, when executed, causes a system comprising a processor operatively coupled with a memory, to perform a method for controlling a virtual interactive surface in a scene, wherein the virtual interactive surface comprises a surface for displaying information and one or several virtual sensors positioned with respect to the surface, wherein a virtual sensor comprises data representing a geometric form, data representing a position in the scene and data representing one or several trigger conditions, the method comprising:

• receiving point cloud data representing surfaces of objects of the captured scene and comprising data representing non-empty points of a first volume area corresponding to the captured first data representation and respective associated position in the first volume area;
• and
• determining whether one or several of the virtual sensor trigger conditions is/are fulfilled based on an analysis of data representing a captured first data representation of the scene in a volume area corresponding to the geometric form and position of each virtual sensor,
• wherein for a first virtual sensor said analysis comprises comparing a number of non-empty points whose position falls in the volume area corresponding to the geometric form and position of said first virtual sensor is greater to a triggering threshold.