Dome-screen device,dome-screen playing system and image generation method thereof

摘要

The present invention discloses a spherical-screen device, a spherical-screen playing system and an image generating method thereof, which adopt the following steps for image rectification: equally dividing an arc curve of a spherical screen, which corresponds to a radian of 90°, into a plurality of segments; according to pixels of a planar image that needs to be displayed, equally dividing a straight line of the planar image corresponding to the arc curve into a plurality of segments, the number of the segments of the straight line being equal to the number of the segments of the arc curve; assigning an image parameter of a first point in the planar image to a third point in a planar image; and connecting a sphere center with a second point of a to-be-displayed image position on the arc curve that corresponds to the first point, a point falling in the planar image being the third point. The spherical-screen device and the image generating method thereof of the present invention adopt the image rectification method to achieve image restoration on the spherical screen, and are particularly suitable for achieving image displaying of an LED 360° spherical-screen device.