Abstract: A system and method for interaction with a user are provided. The system may include a head-mounted display device, at least one sensor implemented on the head-mounted display device, at least one storage medium including a set of instructions, and at least one processor configured to communicate with the at least one storage medium. When executing the set of instructions, the system may be configured to: acquire, by the at least one sensor, a first facial image of a user; and determine, by the at least one processor, an expression of the user at least based on the first facial image of the user.

Abstract: A system and method for interaction with a user are provided. The system may include a head-mounted display device, at least one sensor implemented on the head-mounted display device, at least one storage medium including a set of instructions, and at least one processor configured to communicate with the at least one storage medium. When executing the set of instructions, the system may be configured to: acquire, by the at least one sensor, a first facial image of a user; and determine, by the at least one processor, an expression of the user at least based on the first facial image of the user.

Abstract: The disclosure relates to a display device. The display device includes at least one storage medium including a set of instructions and at least one processor implementing a virtual character application and at least one of a second application or an operating system. The virtual character application is configured to communicate with the at least one of the second application or the operating system. The processor is configured to communicate with the at least one storage medium. When executing the set of instructions, the display device receives intention data indicative of an intention operation of a user. The display device also executes the virtual character application to execute the at least one of the second application or the operating system to perform the intention operation of the user based on the intention data. The display device also executes the virtual character application to display a virtual character on the display device.