Autostereoscopic three-dimensional projector based on two parallax barriers

Tao, Yuhong; Wang, Qiong‐Hua; Gu, Jun; Zhao, Wei; Li, Dahai

doi:10.1364/ol.34.003220

Cited by 68 publications

(42 citation statements)

References 4 publications

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“…Typically, the real depth data extracted by a depth camera will exceed the expressible depth range of the integral imaging method. The definition of depth range  of the integral imaging method is expressed as 2 ,…”

Section: Input Stagementioning

confidence: 99%

“…This is due to the fact that most of these technologies require supplementary glasses or tracking devices in order to visualize a 3D scene. Some other 3D technologies have been developed, for example stereoscopy [1], autostereoscopy [2], holography [3][4]. Amongst these techniques, integral imaging is an attractive autostereoscopic 3D display technology using a lens array [5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Simplified Integral Imaging Pickup Method for Real Objects Using a Depth Camera

Shin

Jeong

et al. 2012

Journal of the Optical Society of Korea

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In this paper, we present a novel integral imaging pickup method. We extract each pixel's actual depth data from a real object's surface using a depth camera, then generate elemental images based on the depth map. Since the proposed method generates elemental images without a lens array, it has simplified the pickup process and overcome some disadvantages caused by a conventional optical pickup process using a lens array. As a result, we can display a three-dimensional (3D) image in integral imaging. To show the usefulness of the proposed method, an experiment is presented. Though the pickup process has been simplified in the proposed method, the experimental results reveal that it can also display a full motion parallax image the same as the image reconstructed by the conventional method. In addition, if we improve calculation speed, it will be useful in a real-time integral imaging display system.

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Section: Input Stagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simplified Integral Imaging Pickup Method for Real Objects Using a Depth Camera

Shin

Jeong

et al. 2012

Journal of the Optical Society of Korea

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“…However, 3D projection display is an effective approach to realizing large-screen and high-resolution 3D display. In the past several years, several types of 3D projection displays have been proposed to achieve highresolution images [9,10] . A 3D projection display based on two parallax barriers which present full-resolution 3D images has been developed [10] .…”

mentioning

confidence: 99%

“…In the past several years, several types of 3D projection displays have been proposed to achieve highresolution images [9,10] . A 3D projection display based on two parallax barriers which present full-resolution 3D images has been developed [10] . However, most of the light from the projectors is blocked by two parallax barriers.…”

mentioning

confidence: 99%

Autostereoscopic 3D projection display based on two lenticular sheets

Lin¹,

Wang²,

Luo³

et al. 2012

中国光学快报

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We propose an autostereoscopic three-dimensional (3D) projection display. The display consists of four projectors, a projection screen, and two lenticular sheets. The operation principle and calculation equations are described in detail and the parallax images are corrected by means of homography. A 50-inch autostereoscopic 3D projection display prototype is developed. The normalized luminance distributions of viewing zones from the simulation and the measurement are given. Results agree well with the designed values. The proposed prototype presents full-resolution 3D images similar to the conventional prototype based on two parallax barriers. Moreover, the proposed prototype shows considerably higher brightness and efficiency of light utilization.OCIS Three-dimensional (3D) displays, which offer the viewer the realism lacking in conventional two-dimensional (2D) displays, are candidates for next-generation image media [1,2] . Currently, various types of 3D displays are both available and under development. Traditional technologies use classical 2-view stereo with one view for each eye and a kind of glasses to filter the corresponding view into each eye. Such stereoscopic displays rely on color separation, polarization, or shutter technology [3−5] . Stereoscopic displays have reached a certain level of maturity and are readily available for professional and private users.Multi-view autostereoscopic displays are advanced systems that do not require glasses [6−8] . An autostereoscopic display consists of a 2D display and a lenticular sheet or a parallax barrier. For an N -view autostereoscopic display, N different parallax images are displayed on the 2D display at the same time and a lenticular sheet or parallax barrier in front of the 2D display ensures correct view separation for the eyes of the viewer. The resolution of each single view is inversely proportional to N . The size of the 2D display is limited, hence, it is difficult to realize large-screen and high-resolution 3D display. However, 3D projection display is an effective approach to realizing large-screen and high-resolution 3D display. In the past several years, several types of 3D projection displays have been proposed to achieve highresolution images [9,10] . A 3D projection display based on two parallax barriers which present full-resolution 3D images has been developed [10] . However, most of the light from the projectors is blocked by two parallax barriers. Considerable light energy is lost and the brightness of the 3D projection display is lowered. In this letter, we propose an autostereoscopic 3D projection display based on two lenticular sheets which consequently increase the brightness of the display.The proposed autostereoscopic 3D projection display consists of four projectors, a projection screen, and two lenticular sheets, as shown in Fig. 1. Four projectors are arranged in a horizontal array and they project four parallax images onto the lenticular sheet. The projected parallax images pass through lenticular sheet 1 facing the project...

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“…Many researchers have made various efforts to develop 3D displays with twodimensional ͑2D͒/3D switching, high brightness, and high resolution. [1][2][3][4][5][6][7][8][9] Among these technologies, the stereoscopic 3D display using 3D glasses has attracted industrial attention because it has neither the loss of spatial resolution nor the 3D moiré effect between pixels and barrier. Moreover, the stereoscopic 3D technology is suitable for realizing 2D/3D switching easily.…”

mentioning

confidence: 99%

Fast polarization switching panel with high brightness and contrast ratio for three-dimensional display

Shin

Lee

Kim

et al. 2011

Applied Physics Letters

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We propose a polarization switching device using optically compensated pi cell for polarization-glass-type three-dimensional display. This device shows good optical properties such as high transmittance and low cross-talk ratio because of its fast dynamic response characteristics. To improve the brightness and contrast ratio on the right-and left-hand sides, we attach optical retardation films on each side of the polarization glasses instead of attaching the films on the polarization switching panel. From the calculation and experiment, we obtain high contrast ratios, over 200:1, on both sides and a high brightness using only one film on each side. © 2011 American Institute of Physics. ͓doi:10.1063/1.3548863͔The flat-panel display technology has developed very fast in the past decade. Hence, this technology is attaining maturity and the market is approaching saturation. On the contrary, the market for three-dimensional ͑3D͒ display has been rapidly expanding worldwide. Many researchers have made various efforts to develop 3D displays with twodimensional ͑2D͒/3D switching, high brightness, and high resolution.1-9 Among these technologies, the stereoscopic 3D display using 3D glasses has attracted industrial attention because it has neither the loss of spatial resolution nor the 3D moiré effect between pixels and barrier. Moreover, the stereoscopic 3D technology is suitable for realizing 2D/3D switching easily. The glass-type 3D displays are divided into passive retarder type using patterned retarder film 5 and active retarder type using either liquid crystal ͑LC͒ shutter glasses 6,7 or polarization switching ͑PS͒ panels. 8,9 However, active retarder type with LC shutter glasses has poor brightness in the 3D mode because of the slow response time and writing speed of the LC panel and shutter glasses. Moreover, the shutter glass is too heavy and uncomfortable due to the presence of batteries, for an active operation. A 3D display with PS panel ͑3D-PS͒ uses polarization glasses that are lighter and more comfortable than LC shutter glasses, because they do not need batteries for operation. However, it also has drawbacks such as low brightness and 3D cross-talk because of slow response time of the PS panel.8 Moreover, without optical compensation, this device has low and asymmetric contrast ratio ͑CR͒. To overcome these limits, we suggested a 3D-PS using dual-frequency LC and two half-waveplate ͑HWP͒ films.9 However, it still has problems such as decrease in brightness due to the two HWPs, low CR under 200:1, and low cell gap under 3 m. Hence, it is difficult to commercialize this technology.In this letter, we propose a stereoscopic 3D display with a PS panel of high brightness and CR. The PS panel is a pi cell with very fast response time. To obtain high brightness and CR in the left-and right-hand sides simultaneously, we suggest a structure with optical compensation using one film on each side. We have measured the properties of the proposed cell, such as its electro-optical ͑EO͒ and dynamic response characteristic...

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Autostereoscopic three-dimensional projector based on two parallax barriers

Cited by 68 publications

References 4 publications

Simplified Integral Imaging Pickup Method for Real Objects Using a Depth Camera

Simplified Integral Imaging Pickup Method for Real Objects Using a Depth Camera

Autostereoscopic 3D projection display based on two lenticular sheets

Fast polarization switching panel with high brightness and contrast ratio for three-dimensional display

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