How much crosstalk can be allowed in a stereoscopic system at various grey levels?

Shestak, Sergey; Kim, Daesik; Kim, Yongie

doi:10.1117/12.910558

Cited by 4 publications

(5 citation statements)

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“…26 There are some difficulties of these gray-to-gray crosstalk definitions-first, a singularity is present when i ¼ j with some definitions, and secondly, the crosstalk values are not perceptually relevant. Teunissen et al, 27 and Shestak et al, 28 have described an extension of this work to provide a perceptually relevant measure of the visibility of crosstalk (ghosting) in relation to the gray-to-gray crosstalk measurement.…”

Section: Gray-to-gray Crosstalkmentioning

confidence: 92%

“…It is also important to understand that most of the current measures of crosstalk are not perceptually relevanthence more research is needed in this area. 27,28 The reason for determining the threshold of visibility of crosstalk is that it can bevery difficult to totally eliminate crosstalk in a particular stereoscopic display technology, whereas if the level of crosstalk can be reduced to a point at which it is not noticeable to the observer, this may allow a more technically and economically viable solution. There is still a great deal to be learnt about the perception of crosstalk and there is considerable scope for more research in this area.…”

Section: Perception Of Crosstalkmentioning

confidence: 99%

“…There is still a great deal to be learnt about the perception of crosstalk and there is considerable scope for more research in this area. 27,28 4 Crosstalk Mechanisms Figure 3 shows the flow of images from the capture of the perspective images with a camera, through to the display of the images on a stereoscopic display, and subsequently viewing and perception by an observer. Crosstalk can occur in the capture, storage/transmission, display and separation stages-this paper focuses most of its attention on how crosstalk occurs in the display and separation stages.…”

Section: Perception Of Crosstalkmentioning

confidence: 99%

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Crosstalk in stereoscopic displays: a review

Woods

2012

J. Electron. Imaging

135

153

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Crosstalk, also known as ghosting or leakage, is a primary factor in determining the image quality of stereoscopic three dimensional (3D) displays. In a stereoscopic display, a separate perspective view is presented to each of the observer's two eyes in order to experience a 3D image with depth sensation. When crosstalk is present in a stereoscopic display, each eye will see a combination of the image intended for that eye, and some of the image intended for the other eye-making the image look doubled or ghosted. High levels of crosstalk can make stereoscopic images hard to fuse and lack fidelity, so it is important to achieve low levels of crosstalk in the development of high-quality stereoscopic displays. Descriptive and mathematical definitions of these terms are formalized and summarized. The mechanisms by which crosstalk occurs in different stereoscopic display technologies are also reviewed, including micropol 3D liquid crystal displays (LCDs), autostereoscopic (lenticular and parallax barrier), polarized projection, anaglyph, and time-sequential 3D on LCDs, plasma display panels and cathode ray tubes. Crosstalk reduction and crosstalk cancellation are also discussed along with methods of measuring and simulating crosstalk.

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Section: Gray-to-gray Crosstalkmentioning

confidence: 92%

Section: Perception Of Crosstalkmentioning

confidence: 99%

Section: Perception Of Crosstalkmentioning

confidence: 99%

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Crosstalk in stereoscopic displays: a review

Woods

2012

J. Electron. Imaging

135

153

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“…Crosstalk C can be calculated in different ways. For the reasons described in our previous publication 10 we have applied the following expression:…”

Section: Resultsmentioning

confidence: 99%

Stereoscopic three-dimensional television using active glasses with switchable refraction

Shestak

Kim

Cha

2015

J. Electron. Imaging

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Abstract. We have devised a full-resolution stereoscopic television system incorporating both a patterned retarder and active glasses. Selective vision of the left image by the left eye and the right image by the right eye is achieved by a conventional combination of a patterned retarder and left and right polarized filters. Full resolution is provided by the active components of the glasses acting as a switchable refractive-type beam displacer. Pairs of line-interleaved images are displayed on an LCD screen sequentially at a frame rate of 120 Hz. With the help of active refraction glasses, the viewer can see full-resolution stereoscopic images as if they are displayed in an interlaced manner. Active glasses are flicker-free. Measured stereoscopic crosstalk is 0.6%, which is defined only by the performance of the patterned retarder. 1 Introduction A large share of recently manufactured LCD televisions (TVs) is capable of displaying stereoscopic three-dimensional (3-D) content. Two types of stereoscopic TVs dominate the consumer market, one based on shutter glasses (SGs) and the other on film patterned retarders (FPRs). Both SG and FPR TV systems are not entirely free of disadvantages. They simply combine relatively low manufacturing complexity and low cost.An SG stereoscopic TV system provides full-resolution stereoscopic images. It is based on time-sequential displaying of left and right images followed by synchronous blocking of the right and left eyes by the corresponding shutter of the SG. To provide low crosstalk stereoscopic images without visible ghosting the LCD display incorporates an image panel with a short response time and a backlight unit, operating in a short-pulse blinking mode.1 Usually, the LCD panel of an SG system features an increased frame rate at least 100 to 120 Hz in order to reduce visible image flicker. However, the presence of a bright light source inside the viewing field of the SG can cause perceivable flicker.An FPR system is based on displaying stereoscopic images in a row-interleaved mode, coding of odd and even rows with an alternating polarization of emitted light, and decoding by passive polarized glasses. Coding is provided by a stripe-patterned anisotropic retarder film bonded on the output surface of the panel. Ideally, the patterned retarder should be placed directly in the color filter plane, but in fact the film is placed on the outer surface of the LCD substrate, i.e., at certain distance from the pixel lines. The presence of this nonzero distance causes an effect, when good stereo with minimum ghosting can be seen only within a limited viewing zone. In order to increase the viewing zone the stripes with

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“…At low levels, the contrast ratio is practically equal to the stereoscopic crosstalk. 2 We measured the switching contrast I off /I on for a narrow beam of green LED light. Figure 3 shows the contrast ratio vs. tilt angle for a shutter, both with and without tilt compensation.…”

Section: 1117/21201306004810 Page 2/2mentioning

confidence: 99%