Forward projection displaying method for combined large screen and control apparatus

Abstract

The invention provides a combined big screen front-direction projecting display method and control device thereof. The method comprises: placing the projector, making the maximal projecting area of the projector partly overlapped; generating the testing sub images and projecting the images to the display plane via the projectors; manually adjusting various sub-screen which can be correctly spliced into a complete picture of the big screen; to manually adjust the screen after the test with the original sub-sub-screen comparison of the test calculation, the various projector display deformation parameters, and save; in accordance with the correction process constitute a test sub-screen picture of the whole approach will be required to show all the screen is divided into sub-images; the basis of the preservation process of the correction of various projector display deformation parameters to be displayed on various sub-screen corresponding, respectively, the inverse deformation ; will reverse after the deformation to the corresponding sub-screen display projector. The invention also provides methods for the control device described in this invention. The operation of the invention is simple, computing complexity and low-cost.

Description

technical field [0001] The invention relates to display technology, in particular to a combined large-screen forward projection display method and control device. Background technique [0002] Large-screen display technology has a very wide range of uses in real life. For example, in monitoring rooms, meeting places, auditoriums, demonstration halls, etc., it is often necessary to display large images. At present, the technologies commonly used for large-screen display mainly include projection and TV curtain wall. Projection technology uses a projector to project the picture to be displayed onto the curtain or wall (hereinafter referred to as the display plane). Its advantage is that the size of the display picture can be conveniently controlled by adjusting the distance between the projector and the display plane. The farther the distance between them, the larger the projected picture. But this method also has disadvantages: firstly, it is required that there should be n...

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Problems solved by technology

But this method also has disadvantages: firstly, it is required that there should be no obstacles between the projector and the display plane, so when displaying a large picture, a large space needs to be left in front of the projector, which is inconvenient; secondly, the projection distance The farther away, the greater the requirement for the brightness of the projector display lamp, and the brightness of the projector display lamp is limited; in addition, it is difficult to achieve a large resolution of the screen projected by a single projector.

However, this method requires an additional camera and a corresponding hardware processing system, which is costly. In addition, the camera will also distort the captured picture due to its own posture, distortion and other factors, and these distortions are usually difficult to obtain during use. Controlled, will directly affect the adjustment results, resulting in unsatisfactory results in actual use

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