Panoramic Image Mapping Method

Abstract

The present invention discloses a panoramic image mapping method. Aiming at a rectangular panoramic image with a resolution of 2M×M, setting a mapping area and a non-mapping area according to the latitude, and only mapping the set mapping area into a square area includes: for the square For a point on the area, calculate the vertical distance and horizontal distance from the point to the center of the square area, and take the larger one as m; calculate the distance n from the point to the zeroth point on the concentric square; Corresponding longitude and latitude; calculate the inverse mapping of the point to the corresponding position (X, Y) in the rectangular mapping panoramic image; then assign a value to the point. The method of the invention can effectively reduce oversampling, thereby achieving the purpose of effectively reducing the number of pixels of the panoramic image and the code rate required for encoding under the condition of less distortion.

Description

technical field [0001] The present invention relates to the field of virtual reality (VR), in particular to a new panoramic image mapping technology, which can be used for equirectangular panoramic images and reduce the bit rate required for encoding the panoramic images. Background technique [0002] With the increasing development of virtual reality technology, the demand for virtual reality videos is increasing day by day. The 360° panorama image requires a wider viewing angle, so it requires a higher resolution than the traditional planar image, and the bit rate required for its encoding is also much higher than that of the traditional planar image. [0003] The most common mapping method nowadays is rectangular mapping, but this mapping method has serious oversampling phenomenon in high latitude regions. Both academia and industry have improved the mapping method of panoramic images, and mapped the rectangular-mapped panoramic images to some new planes to reduce oversa...

AI Technical Summary

Problems solved by technology

[0003] The most common mapping method today is rectangular mapping, but this mapping method has serious oversampling in high latitude areas

Both academia and industry have improved the mapping method of panoramic images, and mapped the rectangular-mapped panoramic images to some new planes to reduce oversampling in high-latitude areas, although the new mapping method has a relatively good bit rate. Savings, but there are some distortion problems due to interpolation in the mapping process

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