Asymmetric mapping method for panorama

Abstract

The invention discloses an asymmetric mapping method for a panorama. The method comprises a mapping process and a reverse mapping process. The mapping process transforms an original map into an asymmetric map through an asymmetric forward mapping method, and comprises the steps that latitude and longitude map coordinates are mapped to original panorama coordinates; the maximum downsampling ratio of an latitude and longitude map interest region in horizontal and vertical directions is calculated; the mapping relation between the same point coordinates from a mapping map to a latitude and longitude map is established; and an asymmetric mapping map is generated. The reverse mapping process reversely maps the asymmetric map into the original map through an asymmetric reverse mapping method. The original map is a panorama of any format. According to the invention, higher sampling precision is used for the interest region in the panorama; lower sampling precision is used for a non-interest region; the image resolution is reduced; and the data amount of the panorama is reduced.

Description

technical field [0001] The present invention relates to the technical field of virtual reality (VR), in particular to a new asymmetric mapping method for panoramic images, which can reduce the image area occupied by non-ROI regions (regions of non-interest) on the panoramic image and reduce the need for encoding panoramic images. bit rate Background technique [0002] Currently, virtual reality technology and related applications are developing rapidly. In virtual reality technology, panoramic images are an important component. Since the panoramic image records the entire picture of the 360-degree viewing angle, it has a very high amount of data, which is not conducive to transmission and storage. [0003] Because often only a part of the panoramic image is an area that the user is more interested in, and the remaining part is not easy to attract the user's attention. Therefore, a higher sampling precision can be used for the region of interest (ROI) in the panoramic imag...

AI Technical Summary

Problems solved by technology

However, the current general panorama image mapping method based on the longitude and latitude map cannot flexibly set the sampling accuracy of the image.

Therefore, the existing panoramic image mapping method cannot use the above-mentioned asymmetric sampling accuracy, the mapping method is unreasonable, and it is difficult to reduce the data volume of the panoramic image

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