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Spherical image processing method and device and server

An image processing and image technology, applied in the field of image processing, can solve problems such as affecting the experience, failing to achieve visual effects, and too fast movement of the perspective content

Active Publication Date: 2020-04-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The image processing of the panoramic video in the prior art realizes that when the viewpoint moves back and forth, the picture content within the viewing angle range increases or decreases accordingly, but if the terminal rotates again, the content of the corresponding viewing angle will move too fast ( Rotate after zooming in) or too slow (rotate after zooming out), it does not meet the situation when people walk around and watch freely in the real world, and cannot achieve immersive visual effects, affecting the experience

Method used

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  • Spherical image processing method and device and server
  • Spherical image processing method and device and server
  • Spherical image processing method and device and server

Examples

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example 1

[0133] Example 1. The spherical image uses the pixel coordinates in ERP format to represent pixels. ERP is a two-dimensional panoramic image that can be used for storage and transmission obtained by uniform sampling and mapping of spherical signals according to longitude and latitude. The pixel coordinates of this image can be represented by latitude and longitude. , the width direction can be represented by longitude and the span is 360°, and the height direction can be represented by latitude and the span is 180°. After the viewpoint is offset from the center of the sphere, the server performs pixel coordinate mapping on the obtained spherical image.

[0134] Assuming any point (m, n) in the ERP format image, where m is the coordinate of the image along the horizontal direction, and n is the coordinate of the image along the vertical direction, according to the mapping formula between the latitude and longitude image point and the spherical latitude and longitude, the corresp...

example 2

[0143] In Example 2, the spherical image uses pixel coordinates in the CMP format to represent pixels, and the server performs pixel coordinate mapping on the obtained spherical image after the viewpoint is shifted from the center of the sphere. Take a mapping surface in CMP format (the surface in the negative axis direction of the x-axis, that is, the front view surface) as an example, assuming any point (m, n) on the front view surface in the CMP format image, where m is the coordinate of the image along the horizontal direction, n is the coordinate of the image along the vertical direction, according to the mapping formula between the image point on the front view of CMP and the coordinate point on the spherical surface, the coordinate point V of the corresponding spherical coordinate point can be obtained 1 (x 1 ,y 1 ,z 1 ) values:

[0144]

[0145] in W 1 is the width of the CMP front view image, H 1 is the height of the CMP front view image, ε 0 It is a consta...

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Abstract

The invention provides a spherical image processing method and device and a server. The spherical image processing method comprises the following steps: acquiring a spherical image, and determining the sphere center of the spherical image; determining a viewpoint when the user watches the spherical image, wherein the viewpoint is located at any point except the sphere center in a sphere space surrounded by the spherical image; determining a pixel expansion area and a pixel contraction area on the spherical image according to the sphere center and the viewpoint; and performing image processingon the spherical image, wherein the image processing comprises performing pixel expansion processing on the image in the pixel expansion region and performing pixel contraction processing on the imagein the pixel contraction region. According to the invention, local enlargement and local reduction are carried out according to the actual view of the viewpoint, so that the user can obtain the viewing experience similar to the near-to-far small-zoom change of the object actually viewed in the real world.

Description

technical field [0001] The present application relates to image processing technology, in particular to a spherical image processing method, device and server. Background technique [0002] In a virtual reality (Virtual Reality, referred to as: VR) panoramic video application, a user can watch a dynamic video at any angle of 360 degrees and enjoy a brand new viewing experience. Most of the existing panoramic video viewing methods use 3 degrees of freedom (3Degree of Freedom, referred to as: 3DOF) viewing experience. In this application, the viewpoint (including VR glasses, mobile phones, tablets, TVs, computers, etc.) The position of the center point of the sphere composed of the video can be used for viewing the panoramic video through arbitrary horizontal deflection, vertical pitch, and rotation around the axis. However, as people’s demand for a strong sense of immersion in VR gradually deepens, it is expected that the wearing point of view can move freely, front, back, l...

Claims

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Application Information

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IPC IPC(8): G06T3/40G06T19/00
CPCG06T3/4007G06T19/006G06F3/147H04N21/6587G06T15/205G06T3/053G06T3/40H04N23/698
Inventor 宋翼邸佩云
Owner HUAWEI TECH CO LTD
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