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Nonlinear geometric correction technology of audio and video synchronization playing system and device thereof

A technology for audio and video synchronization and playback system, which is applied to components of TV systems, components of color TVs, and image reproducers using projection devices, etc. question

Inactive Publication Date: 2013-09-25
天津朗合数字科技有限公司
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  • Abstract
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Problems solved by technology

[0004] Because simply adjusting the physical equipment is inconvenient and cannot achieve a seamless effect

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  • Nonlinear geometric correction technology of audio and video synchronization playing system and device thereof

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Embodiment Construction

[0012] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] Such as figure 1 As shown, a non-linear geometric correction technology and device for an audio-video synchronous playback system deforms 2D projection images so that observers can observe normal perspective projection images on the screen.

[0014] After geometric correction, the grid image in the frame buffer is distorted, while the grid image on the projection screen appears normal.

[0015] For a multi-projector splicing system that requires geometric correction, first calculate the target position of each grid node of the image in the frame buffer according to the defined geometric correspondence between the projection screen and the projector, and then inversely calculate the control of the grid surface point grid.

[0016] The present invention can also have other various embodiments, without ...

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Abstract

The invention discloses a nonlinear geometric correction technology of an audio and video synchronization playing system and a device thereof, and relates to the technical field of large screen projection display, in particular to a technology device which carries out processing of amplification, contraction, translation, rotation, distortion and the like on input images of projectors, enables the images to be projected to a screen, and enables contents to be distributed uniformly and regularly, and the images precisely coincide in projection overlapping regions of the projectors. The nonlinear geometric correction technology integrates a background host, the system is directly driven through a drive display card inner core, single pixel curve correction is supported, and the correction function of arc, trapezoid, spheroidal and various regular and irregular curved surfaces of pictures are supported. The correction function enables equipment to be adapted to complicated engineering environments, for example, the equipment can be adapted to flexible projector placement positions, the curved surfaces, cambered surface fusion and the like.

Description

technical field [0001] The invention relates to the technical field of large-screen projection display, more specifically, a nonlinear geometric correction technology and a device thereof for an audio and video synchronous playback system. Background technique [0002] With the advancement of science and technology and the improvement of people's appreciation level, a large number of display schemes such as multi-projection display, three-dimensional movies, and ring-screen movies have appeared in large-scale entertainment venues and exhibitions. Due to the particularity of cylindrical projection, the light projected by multiple projectors will inevitably have a certain degree of geometric deformation when displayed on the screen. Without surface correction, the integrity of the image screen projected by several projectors cannot be guaranteed. sex. [0003] Due to the overlap effect of two adjacent projectors in the public area, the light intensity and color degree are 2 s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74H04N9/31
Inventor 宋海波
Owner 天津朗合数字科技有限公司
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