Interaction method and apparatus for light field display, and light field display system

An interactive method for light field display, comprising:

• creating a virtual object on a stereoscopic interactive interface displayed by a target light field display to map a user's interactive gesture on the stereoscopic interactive interface;
• performing an interactive operation corresponding to the interactive gesture on a target object in the stereoscopic interactive interface, by recognizing the user's interactive gesture for the stereoscopic interactive interface and mapping the interactive gesture to the virtual object;
• and
• adjusting a display content of the stereoscopic interactive interface based on the interactive operation,
• wherein the interactive gesture comprises a single finger gesture;
• and the performing the interactive operation corresponding to the interactive gesture on the target object in the stereoscopic interactive interface comprises:
• detecting a duration of the single finger gesture touching the target object in the stereoscopic interactive interface;
• determining whether the duration reaches a preset duration;
• in a case that the duration reaches a preset duration, determining that the interaction operation corresponding to the single finger gesture is a long press operation;
• and
• in a case that the duration does not reach the preset duration, determining that the interaction operation corresponding to the single finger gesture is a click operation,
• wherein the target object comprises a first-level menu item, the stereoscopic interactive interface comprises at least one first-level menu item, and the at least one first-level menu item is displayed in a first preset area of the stereoscopic interactive interface according to a preset spatial display stack order, and the interactive operation further comprises a grab operation;
• the adjusting the display content of the stereoscopic interactive interface based on the interactive operation comprises:
• moving a second first-level menu item based on a grab operation on the second first-level menu item, generating a second second-level menu display area corresponding to the second first-level menu item, and displaying the second second-level menu display area in a second preset area of the stereoscopic interactive interface at the highest spatial display level;
• wherein the highest spatial display level is a spatial display level closest to the user.

A light field display system, comprising a light field display and an image acquisition device, connected to the light field display and is configured to acquire an interactive gesture,

• wherein the light field display comprises a memory and one or more processors, wherein a computer program is stored in the memory, and when the computer program is executed by the one or more processors, an interactive method for light field display is implemented, the method comprising:
• creating a virtual object on a stereoscopic interactive interface displayed by a target light field display to map a user's interactive gesture on the stereoscopic interactive interface;
• performing an interactive operation corresponding to the interactive gesture on a target object in the stereoscopic interactive interface, by recognizing the user's interactive gesture for the stereoscopic interactive interface and mapping the interactive gesture to the virtual object;
• and
• adjusting a display content of the stereoscopic interactive interface based on the interactive operation, wherein
• in a case that the light field display is a light field display with an optimal viewing distance exceeding a preset distance, the image acquisition device is installed at a top of the light field display, and a longitudinal field angle of the image acquisition device is set in a range of 90° to 120°, and an angle between a right ahead direction of the image acquisition device and a horizontal direction is set in a range of 45° to 60°;
• and
• in a case that the light field display is a light field display whose optimal viewing distance does not exceed a preset distance, the image acquisition device is installed at a bottom of the light field display, the longitudinal field angle of the image acquisition device is set in a range of 60° to 90°, and the angle between the right ahead direction of the image acquisition device and the horizontal direction is set by the following relationship:
• α
• =
• 90
• ⁢
• °
• -
• fov
• 2
• -
• arctan
• ⁢
• l
• h
• wherein, h represents a height of the light field display, α represents the angle between the right ahead direction of the image acquisition device and the horizontal direction, fov represents the longitudinal field of view of the image acquisition device, and l represents the optimal viewing distance.