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Projection system and lightness adjusting method thereof

A technology of projection system and brightness adjustment, applied in the field of projection system, can solve the problems of time-consuming, user inconvenience, etc.

Active Publication Date: 2015-05-06
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to make the brightness of the picture in the overlapping area 130 consistent, the existing technology only adjusts the brightness projected by the projection device 120 and the projection device 130 through human eye observation and manual adjustment. quite inconvenient and time-consuming for

Method used

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  • Projection system and lightness adjusting method thereof
  • Projection system and lightness adjusting method thereof
  • Projection system and lightness adjusting method thereof

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Embodiment Construction

[0029] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

[0030] Figure 2A is a schematic diagram of a projection system according to an embodiment of the present invention. Figure 2B yes Figure 2A Imaging schematic of the projection system. Please refer to Figure 2A and Figure 2B , the projection system 200 includes a plurality of projection devices, namely a first projection device 210 and a second projection device 220 , an image capture device 230 and a control unit 240 .

[0031] The first projection device 210 and the second projection device 220 are, for example, optical projection devices or digital projection devices, respectively. The first projection device 210 is used to project the first picture 212 on the screen 20 , and the second projection device 220 is used to project the second picture 222 on ...

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Abstract

Provided is a projection system and a lightness adjusting method thereof. The projection system comprises a plurality of projection devices which project a plurality of images on a screen. The images form a connex set area and have a superposed area. The lightness adjusting method comprises obtaining the images on the screen to obtain image information, selecting a target area from the image information so as to obtain a fused image, corresponding to the images, in the target area, executing a genetic algorithm according to lightness information in the target area to obtain an optimal parameter set and enabling the projection devices to carry out projecting according to the optimal parameter set. The target area is smaller than the connex set area and includes at least one portion of the superposed area. According to the invention, the plurality of projection devices in the projection system can be automatically adjusted to enables the projected images have relatively uniform lightness in the superposed area.

Description

technical field [0001] The present invention relates to a projection system, and in particular to a projection system with multiple projection devices and a brightness adjustment method thereof. Background technique [0002] At present, it is quite difficult to manufacture a large-size display, and the display effect is not only bad, but also the cost and price are quite expensive. Therefore, when multiple viewers share images at the same time, a projector is usually used to project the content to be shared onto a large screen or a wall. In order to achieve a better sharing environment, the existing technology will increase the number of projectors, so that the shared picture and brightness will be greatly improved. [0003] figure 1 is a schematic diagram of an existing projection system. Please refer to figure 1 , the existing projection system 100 has a projection device 112 and a projection device 114 . The projection system 100 overlaps the images projected by the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74H04N9/31
Inventor 林冠廷
Owner VIA TECH INC
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