Spherical display image processing method and system

Abstract

The invention provides a spherical display image processing method and system, and the method comprises the steps: enabling a to-be-displayed image to serve as a texture map and to be pasted on a model or a curved surface, and rendering the model or curved surface till a cubic texture or directly carrying out rendering; building a target image of a plane for spherical display according to the cubic texture, wherein the corresponding relation between the target image and the cubic texture is that the target image is located in a polar coordinate system and the pixel coordinates corresponding to each pixel of the target image are expressed through polar coordinates; enabling the polar coordinates of each pixel to be correspondingly converted into a three-dimensional coordinate point on the a spherical surface in a three-dimensional coordinate system, and enabling the color value, obtained through the sampling of the cubic texture at each three-dimensional coordinate point, of each point to be given to a corresponding pixel of the target image; carrying out the algorithm transformation in an actual implementation process with the help of a top point shader of a graphic platform directx or opengl, and achieving the high-efficiency and high-quality conversion output through a graphic display card, thereby enabling display to have no blind region, enabling display to be flexible, and enabling the operation efficiency to be high.

Description

technical field [0001] The invention relates to the technical field of image display, in particular to a spherical display image processing method and system. Background technique [0002] The current spherical display technology uses computers, projectors, fisheye lenses and ball screens. The projection signal output by the computer is processed by the projector through imaging technology to become an image output, and the image output by the projector fills the entire ball through the fisheye lens. Under normal circumstances, the picture to be projected (which can be a video or picture) output by the computer to the projector is a flat rectangular image, so the picture output by the projector is also a flat rectangular image, which is directly projected to the ball screen through the fisheye lens On the other hand, it will cause very large deformation due to the strong divergence characteristics of the fisheye lens, which will seriously affect the display effect on the sph...

AI Technical Summary

Problems solved by technology

[0002] The current spherical display technology uses computers, projectors, fisheye lenses and ball screens. The projection signal output by the computer is processed by the projector through imaging technology to become an image output, and the image output by the projector fills the entire ball through the fisheye lens. Under normal circumstances, the picture to be projected (which can be a video or picture) output by the computer to the projector is a flat rectangular image, so the picture output by the projector is also a flat rectangular image, which is directly projected to the ball screen through the fisheye lens On the other hand, it will cause very large deformation due to the strong divergence characteristics of the fisheye lens, which will seriously affect the display effect on the spherical screen

Therefore, it is necessary to perform image transformation on the image and the display model to obtain the final output image. At present, the commonly used transformation method is to convert the image pixels into polar coordinates and then map to the three-dimensional coordinates of the sphere, and then calculate the position of the original image from the three-dimensional coordinates. Flexibility Not high, and the operating efficiency is low, especially for the blind spots that cannot be handled in the processing of some ball screen vertices and bottom points

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