Processing method of projector spherical display output image

Abstract

The invention relates to a processing method of a projector spherical display output image. 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 and a target image coordinate system are respectively built according to the Cartesian coordinate system. A polar coordinate transformation is conducted according to optical path characteristics of a fish-eye lens. The polar coordinate transformation includes that a pixel coordinate of the target image is converted to a coordinate under a polar coordinate system, a pixel coordinate of the source image according to the coordinate under the polar coordinate system is obtained, and pixel color output of corresponding pixel coordinate of the target image according to the pixel color of the obtained pixel coordinate of the source image is conducted. According to the processing method of the projector spherical display output image, the to-be-projected image can be transformed and processed before being outputted, the image outputted by the projector is circular, the problem of image deformation is solved, and spherical display effects projected on a spherical screen are improved.

Description

technical field [0001] The invention relates to image processing technology, in particular to a processing method for spherical display output image 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, which will seriously a...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that in the existing spherical display technology, the projector directly projects the received plane rectangular image onto the ball screen through the fisheye lens to cause obvious deformation, and provides a processing method for the output image of the spherical display of the projector. The image to be projected 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 improve the spherical display effect projected on the dome screen

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