A panoramic video diamond sampling method and device

A panorama video and diamond technology, applied in the field of video coding, can solve the problems of rectangles without complete adjacency, unfavorable video coding and compression, sampling redundancy, etc., to avoid sampling structure redundancy, improve coding and compression efficiency, and complete content. The effect of adjacency
CN106488233BActive Publication Date: 2019-08-23SHANGHAI GMT DIGITAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI GMT DIGITAL TECH
Publication Date
2019-08-23

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Abstract

The invention discloses a panoramic video diamond sampling method and device. The method comprises the following steps of dividing a spherical surface into N=2K ring curved surfaces by using equally spaced latitudes according to a spatial resolution requirement, and orderly marking the ring curved surfaces as Oi; evenly dividing the ring curved surfaces Oi into Ti=2N-2-4M areas by using equally spaced longitudes; calculating and obtaining an average value of light rays in each area on the spherical surface as sampling values of sampling points corresponding to the area; and arranging the sampling values into one NxN matrix. The panoramic video diamond sampling method provided by the invention can enable the sampling points to meet the characteristics that the sampling points are more near the equator and the sampling points are less at the two poles on the spherical surface; the distribution characteristic of the number of the sampling points has the property of diamond distribution on a longitude and latitude graph, so that it is called the diamond sampling. The sampling method avoids sampling structure redundancy, so that the number of the sampling points is reduced and the amount of data after sampling is reduced under the condition that the same spatial resolution is achieved.
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Description

technical field

[0001] The present invention relates to video coding technology, in particular to a panoramic video diamond sampling method and device. Background technique

[0002] Panoramic video refers to all the scenes around an observation point in space, which is composed of all the light that this observation point can receive. Panoramic video can be abstracted into a sphere centered on the observation point.

[0003] When using a computer to process panoramic video, it is inevitable to perform discretized spatial sampling on the panoramic video. When discretizing the spatial sampling of the panoramic video, it is necessary to ensure a certain spatial sampling density to achieve the required definition. At the same time, it is also necessary to consider that the memory of the computer is not suitable for storing data of a spherical structure, and it is necessary to arrange the sampling points on the plane in a certain way.

[0004] The existing spherical sampling m...

Claims

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