A positioning method and system for vr video

Abstract

The invention relates to the field of virtual reality (VR), in particular to a positioning method and system for a VR video. According to the method, coordinates of a current display image in the VR video are obtained through calculation according to the offset of an input device; and the offset of the head of a user is obtained through calculation according to the coordinates. Through the positioning method and system, the offset of the head of the user is obtained through precise calculation according to the position of the image, which the user watches currently, in the VR video, therefore, the image which the user watches is precisely matched with a corresponding audio file and a corresponding action, and user experience is improved.

Description

technical field [0001] The invention relates to the field of virtual reality, in particular to a VR video positioning method and system. Background technique [0002] VR virtual reality video is an important part of virtual reality content, which visually realizes a 720° panoramic surround viewing effect, such as figure 1 shown. [0003] In order to realize the rotation of the user's head, play the video and audio corresponding to the current viewing screen design effect, screen special effects, subtitle prompts and trigger the corresponding external device feedback, so as to realize the interaction when the user watches the VR virtual reality video, it is necessary Accurately obtain the relative position of the currently viewed image in the VR virtual reality video. [0004] In order to solve the above problems, the prior art uses a gyroscope or an external positioning device to identify the orientation of the head, and triggers corresponding operations according to the o...

AI Technical Summary

Problems solved by technology

However, the use of gyroscopes or external auxiliary positioning devices is prone to cumulative errors due to implementation principles, physical assembly accuracy, and hardware compatibility issues, which affect positioning accuracy

For example, the principle of the gyroscope determines that its measurement reference is itself, and there is no absolute reference object outside the system. In addition, the accuracy of the sampling rate per unit time is limited, so the cumulative error of the integral will increase rapidly with the passage of time, and eventually the output angle will be It does not match the reality, so the gyroscope can only work in a relatively short time scale, and is suitable for detecting the instantaneous rotation angle of the device, and cannot be used as a benchmark reference coordinate for long-term use. Therefore, the hardware-based pointing and positioning scheme, in After using for a period of time, there will be a pointing offset problem

[0005] Therefore, according to the offset measured by the hardware device to determine the position of the currently viewed picture in the VR video, it is difficult to accurately match the video and audio, picture effects, and subtitle prompts corresponding to different orientations, and it is difficult to accurately trigger the corresponding external video at a specific position. device feedback

In addition, hardware-based solutions must pay additional hardware overhead costs, and there are compatibility challenges

Images