Synthetizing algorithm based on naked eye three-dimensional displaying technology

A technology of display technology and synthesis algorithm, which is applied in the field of naked-eye 3D autostereoscopic display, and can solve problems such as viewpoint flickering, horizontal and vertical pixel imbalance, etc.

Active Publication Date: 2012-11-28
TIANJIN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

by Figure 8 The prism mirror grating shown in (b) is taken as an example. If each prism mirror in the prism mirror coating is completely vertically covered on the LCD screen, in addition to the horizontal and vertical pixel imbalance problem, there are two disadvantages : The first disadvantage is that black masking between pixel columns in the LCD will cause vertical bands to appear on the image, known as the "picket-fense" effect; When moving between, you will obviously feel that there is intermittent flicker between viewpoints

Method used

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  • Synthetizing algorithm based on naked eye three-dimensional displaying technology
  • Synthetizing algorithm based on naked eye three-dimensional displaying technology
  • Synthetizing algorithm based on naked eye three-dimensional displaying technology

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example 1

[0049] Example 1. Algorithm for synthesizing multi-viewpoint images under normal conditions

[0050] 3D display device based on prism lens: LCD screen is 65 inches, color TFT-LCD mode, model is P650HVN01.0. The resolution is 1920×1080 pixels and the diagonal size is 64.5 inches. When the inclination angle of the grating satisfies tanα=0.222222, and the grating pitch corresponding to this display screen is d=1.554mm. After the sub-sampling of the viewpoint view, how to synthesize the sub-sampled viewpoint images into an auto-stereoscopic display image is the key problem of the image synthesis algorithm. The rule of autostereoscopic image synthesis is the rule of multi-view sub-pixel arrangement, and this multi-view sub-pixel arrangement should be understood as the inverse process of sub-sampling. Sub-sampling is to extract the required sub-pixels from images of different viewpoints, and the synthesis process is to reposition the extracted sub-pixels of each viewpoint into the...

example 2

[0062] Example 2. There are placement errors

[0063] Still take this LCD screen as an example:

[0064] The LCD screen is 65 inches, color TFT-LCD mode, the model is P650HVN01.0. This LCD screen is 1920 x 1080 pixels and measures 64.5 inches diagonally. From a theoretical point of view: when the inclination angle of the grating satisfies tanα=0.222222, the angle of the pasted grating is just consistent with the distribution of sub-pixels in the synthesized image, and it can be displayed correctly at this time.

[0065] But in general, there will be a certain difference between the actual angle of the mounted grating and the angle required to correctly display the stereoscopic information (tanα=0.222222), but it is this small difference that will seriously affect the stereoscopic display when the audience watches with naked eyes Effect.

[0066] According to the experimental test, the inclination angle tanα=0.231722, the number of sub-pixels covered by each prism lens unit ...

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Abstract

The invention relates to a naked eye free three-dimensional displaying technology, which arms at synthetizing corresponding three-dimensional images by meeting following requirements: 1, an included angle between surface-mounting direction of grating and the vertical direction is at an arbitrary value; and 2, the technology is suitable for a parallax barrier mode and a lens cylindrical surface mode, and simultaneously is capable of being applied to rectify angle error generated by grating surface-mounting. The technical scheme adopted by the synthetizing algorithm based on naked eye three dimensional displaying technology comprises the following steps: setting a dot pitch of a displayer as delta, a resolution ratio as W*H, a grating pitch as d, an inclination angle as alpha, and viewpoints as N, thus the initial arranged positions of sub-pixels of each row are determined to be consistent with initial positions of subsamplings: delta h equals to 3h*tan alpha equivalent to N (2); circulating for H times with row serving as a unit, and finally generating a three-dimensional composite image. The synthetizing algorithm based on naked eye three-dimensional displaying technology is mainly applied to free three-dimensional displaying.

Description

technical field [0001] The invention relates to a naked-eye 3D autostereoscopic display technology, in particular to a synthesis algorithm based on the naked-eye 3D display technology. Background technique [0002] The most effective channel for human beings to obtain information is through vision. Since the human eyes see the real three-dimensional scene in nature, it has always been the goal pursued by human beings to be able to reproduce the real three-dimensional scene on the screen. With the improvement of two-dimensional image compression, transmission, and display technology, the next goal for human beings to pursue the reproduction of real natural scenery is to reproduce the three-dimensional information of the scenery. Stereoscopic information reproduction technology will definitely become the next hot spot in the development of information technology after voice, data, and plane image services. Stereoscopic imaging technology is gradually developed based on such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00G02B27/22
Inventor 侯春萍王晓燕陈磊李素梅周圆
Owner TIANJIN UNIV
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