Processing method of projector spherical display and rotary output image

Abstract

The invention relates to a processing method of a projector spherical display and a rotary output image. The processing method of the projector spherical display and the rotary output image includes that a to-be-projected plane rectangular image is taken as a source image and an image outputted by a projector spherical display is taken as a target image, a source image coordinate system, a target image coordinate system and a spherical coordinate system are built firstly, a pixel coordinate of the target image is converted to a three-dimensional coordinate under the spherical coordinate system according to optical path characteristics of a fish-eye lens, and then a rotating transformation is conducted to the three-dimensional coordinate, the three-dimensional coordinate after the rotating transformation is converted to a coordinate under a polar coordinate system, and then a pixel coordinate of the source image can be obtained according to the coordinate under the polar coordinate system. Pixel color output of corresponding pixel coordinate of the target image can be conducted according to the pixel color of the obtained pixel coordinate of the source image. The processing method of the projector spherical display and the rotary output image is capable of solving the problem of image transformation, rotating on any shafts on a spherical screen, and improving spherical display effects projected on the spherical screen.

Description

technical field [0001] The invention relates to image processing technology, in particular to a processing method for spherically displaying and rotating output images of a projector. 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. Screen, under normal circumstances, because the picture to be projected (which can be a video or a 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, such as figure 1 As shown, if it is directly projected onto the dome screen through the fisheye lens, it will cause very large deformation due to the strong divergence characteristics of the fisheye lens, whi...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that the projector directly projects the received planar rectangular image onto the ball screen through the fisheye lens to cause obvious deformation in the existing spherical display technology, and provides a processing method for spherical display and rotating output image of the projector. The image to be projected in the computer is deformed before being output to the projector, so that the image output by the projector is circular, which can solve the problem of image deformation, and can rotate around any axis on the dome screen, improving the performance of the dome screen. Up-projected spherical display effect

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