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General-purpose grating parameter measurement method based on pillar lens grating LCD free stereo display equipment

A lenticular grating and stereoscopic display technology, which is applied in optics, optical components, image data processing, etc., can solve the problems of poor universality, complicated process, and low precision, and achieve high universality, high precision, and high grating parameters. precise effect

Inactive Publication Date: 2008-11-05
ZHEJIANG UNIV
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Problems solved by technology

[0004] The existing grating parameter measurement method based on the lenticular lens grating LCD autostereoscopic display device is generally only suitable for vertical gratings (that is, the value of the inclination angle α is 0), and is only used to measure the line number LPI value of the lenticular lens grating; in addition, the current Some measurement methods generally need to print out the test picture first, and then install a cylindrical lens grating on it for observation and matching, which has the disadvantages of complicated process, low accuracy, and poor universality.

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  • General-purpose grating parameter measurement method based on pillar lens grating LCD free stereo display equipment
  • General-purpose grating parameter measurement method based on pillar lens grating LCD free stereo display equipment
  • General-purpose grating parameter measurement method based on pillar lens grating LCD free stereo display equipment

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Embodiment Construction

[0027] The general grating parameter measurement method based on the lenticular grating LCD autostereoscopic display device comprises the following steps:

[0028] 1) Estimate the actual tilt angle α value of the lenticular lens grating based on the all-black and all-white RGB image;

[0029] 2) Estimate the actual line number LPI value of the lenticular lens grating based on the all-black and all-white RGB image;

[0030] 3) Based on the multi-viewpoint test image of the actual scene, fine-tune the actual tilt angle α value and the actual line number LPI value of the lenticular lens grating to make it completely match the lenticular lenticular grating.

[0031] Such as figure 2 As shown, the height of each RGB sub-pixel on the LCD display is three times its width, which are arranged in the following order on the LCD display: each row is RGBRGB...until the entire LCD display is filled, and each Three adjacent RGB sub-pixels form an LCD pixel. The number of RGB sub-pixels c...

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Abstract

The present invention discloses a method for measuring the parameter of the universal raster based on LCD free stereo display device of cylindrical raster. The method comprises the following steps: 1) estimating an actual slope angle alpha value of the cylindrical raster based on the total-black and total-white RGB image; 2) estimating the actual line number LPI value of the cylindrical raster based on the total-black and total-white RGB image; and 3) testing the image at multiple viewing points based on the actual scenery, and fine-adjusting the actual slope angle alpha value and actual line number LPI value of the cylindrical raster. Compared with the existing method for measuring the parameter of raster, the method of the invention has the following advantages: firstly high universality for the cylindrical raster with random line number LPI value and random slope angle alpha value; secondly simplicity and convenience, wherein the test picture is not required to be printed, and the parameter of raster can be accurately measured by observing through the LCD free stereo display device of cylindrical raster; and thirdly high precision, the measuring process is combined with actual scenery for testing image with multiple viewing points to lead to more accurate raster parameter which is obtained by measuring.

Description

technical field [0001] The invention relates to a method for measuring general grating parameters based on a lenticular lens grating LCD autostereoscopic display device. Background technique [0002] With the continuous development of display technology, people have developed a variety of free stereoscopic display technologies that can directly watch stereoscopic images with naked eyes without the aid of stereoscopic glasses and other auxiliary visual aids, mainly including lenticular grating stereoscopic display, narrow Slit grating stereoscopic display, holographic stereoscopic display and volumetric 3D stereoscopic display, etc. Among the numerous autostereoscopic display technologies, the autostereoscopic display technology based on lenticular lens has become the more common autostereoscopic display technology because the lenticular grating is easy to process and the stereoscopic effect is outstanding. [0003] The three-dimensional grating is generally attached to the ...

Claims

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Application Information

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IPC IPC(8): G01M11/02G02B27/22G06T7/00
Inventor 何赛军李东晓薛玖飞骆凯朱梦尧姚力石冰张明
Owner ZHEJIANG UNIV
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