VR equipment multi-camera exposure synchronization method

Abstract

The embodiment of the invention discloses a multi-camera exposure synchronization method for VR equipment, and the method comprises the steps: building an equipment ID set and a special queue for caching an open flow command in advance according to hardware equipment involved in exposure synchronization, and enabling the hardware equipment to comprise multiple cameras; after the plurality of cameras are opened, obtaining frame image request information; responding to the frame image request information and generating a flow opening command, and judging whether equipment corresponding to the flow opening command is in the ID set or not; if yes, caching the flow opening commands into a special queue one by one, and centrally issuing all the flow opening commands in the special queue to multiple cameras at the same time after the cache number reaches a preset threshold value; and circularly receiving the frame images sent by the plurality of cameras, and executing an exposure timestamp difference convergence logic until the difference is converged to be within an expected threshold range, thereby finishing exposure synchronization. According to the technical scheme, exposure synchronization of the VR equipment camera can be completed more efficiently, consumed time is short, efficiency is high, and the method has very high application prospects.

Description

technical field [0001] The invention relates to the technical field of VR equipment, in particular to a multi-camera exposure synchronization method for a VR equipment. Background technique [0002] With the development of science and technology, VR equipment has gradually entered people's field of vision. In VR devices, multiple cameras are mostly used to work together to track the spatial position of the handle controller. In order to ensure the high accuracy of the calculation results of the spatial position of the handle, it is necessary to ensure that the frame images generated by the multiple cameras used in real time should be exposed at the same time as possible, that is, the exposure start time, frame interval, and exposure time of multiple cameras parameters are nearly identical. If the exposures are out of sync, the result of the final handle spatial position calculation may be "by a thousand miles". Therefore, when using multiple cameras for handle tracking, i...

AI Technical Summary

Problems solved by technology

[0004] However, there are certain limitations in the current common methods of hardware synchronization and software synchronization:

If there is a millisecond-level deviation in the hardware signal (Vsync), or a frame drop occurs on a certain camera on the software side, it is easy to cause multiple cameras to experience out-of-sync exposure at the same time, and even cause multiple cameras to fail to continue to generate frame images , causing the entire camera system to crash

[0006] Second, the method of software synchronization is more robust, but it takes a long time

However, the time-consuming of 1000ms obviously cannot satisfy the VR experience, so the time-consuming problem of the current software synchronization method needs to be solved

[0008] To sum up, the current existing technology lacks a method that can efficiently realize the exposure synchronization of the camera of the VR device

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