Augmented reality autostereoscopic 3D display based on sparse reflection array

Xl, Ma; Yuan, Rong-Ying; Zhang, Linbo; He, Min-Yang; Zhang, Han‐Le; Xiao, Yan; Wang, Qiong‐Hua

doi:10.1016/j.optcom.2022.127913

Cited by 9 publications

(4 citation statements)

References 28 publications

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“…𝑃𝑠𝑖 𝑖𝑗 = 𝑤 𝑖𝑗 + 𝑠𝑖 * 𝑟𝑒𝑓𝑟𝑒𝑐𝑡𝑒𝑑 𝑖𝑗 + 𝐿𝑝𝑜𝑖𝑛𝑡 𝑖𝑗 (10) The final pixel position 𝑃𝑠𝑖 𝑖𝑗 can be obtained through Formula (10).…”

Section: Principle and Implementation Of Vertical Attachment Gratingmentioning

confidence: 99%

“…Due to the convenience of achieving stereoscopic display without the need for glasses, these technologies have become the mainstream of automatic stereoscopic techniques. To achieve left and right images with depth information, parallax barriers or columnar grating arrays are fixed on the surface of 2D liquid crystal display panels [9,10]. The pixels of the liquid crystal panel are divided into different regions, and the number of regions depends on the desired number of viewpoints.…”

Section: Introductionmentioning

confidence: 99%

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Multi-view autostereoscopic display based on tilt-fit lenticular lenses

Wu,

Zhou,

Xia

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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The emergence of a viewpoint tracking system in auto-stereoscopic three-dimensional displays has resolved the issue of viewing from different angles. However, such systems are limited to accommodating only one observer without the capability to accommodate multiple observers. To address this problem, this paper proposes a multi-view auto-stereoscopic display system based on a tilted cylindrical grating, capable of supporting up to 28 viewpoints. The system comprises an FPGA processing unit and a screen panel that utilizes FPGA to convert traditional 2D content into 2D+z images for stereoscopic display and presents the stereoscopic images by combining the screen panel. The screen panel consists of tilted cylindrical gratings affixed to the LCD panel. The design of dense viewpoints not only meets the requirements of multiple perspectives but also mitigates dizziness and blurring caused by the viewer's head or position movement during observation. In this design, we replace vertical gratings with tilted gratings, adhering cylindrical gratings to the surface of the LCD panel. This approach transforms the original rectangular sub-pixels into uniformly sized rhomboid pixel blocks, superior to irregularly stretched pixel blocks when vertically aligned. This paper presents the principles and mathematical calculations of the design, and a set of auto-stereoscopic display screens is created to validate whether the design can meet the requirements of multiple viewpoints and viewing stability. The results indicate that our auto-stereoscopic display effectively reduces crosstalk and stabilizes 3840*2160 video frames at 30 frames per second.

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Section: Principle and Implementation Of Vertical Attachment Gratingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi-view autostereoscopic display based on tilt-fit lenticular lenses

Wu,

Zhou,

Xia

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

View full text Add to dashboard Cite

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“…In mixed-reality studies utilizing projector displays, stereoscopic images are obtained with polarized glasses that filter frames intended for each eye [9,14,32]. Additionally, related works using (auto) autostereoscopic AR ML [6,39,44,50] can produce similar depth perceptions.…”

Section: Vergence and Diplopiamentioning

confidence: 99%

Effects of Eye Vergence and Accommodation on Interactions with Content on an AR Magic-lens Display and its Surroundings

Lugtenberg,

Copi ˇ c Pucihar,

Kljun

et al. 2024

IEEE Trans. Visual. Comput. Graphics

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Figure 1: Depending on the type of magic-lens display (green), eye accommodation (blue lines) and/or vergence (black lines) distances must change as the observer shifts from a near display (green) to the far surroundings (brown), or vice versa. The top-right of each scenario shows the first-person view of letters "A," "B," and "C" when the gaze is fixed on letter "B." We considered four display types: (1) Conventional displays. "A" and "C" are out of focus and have double vision. Both the vergence and accommodation distances must change as the gaze shifts (yellow arrow) toward the surroundings. (2) Stereoscopic displays. "A" and "C" are out of focus; only the accommodation must change. (3) Varifocal displays. "A" and "C" are observed with double vision; only the vergence must change. (4) Transparent displays. All three letters in focus and without double vision; no accommodation or vergence changes are necessary.

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“…The image matching in stereovision [89,[91][92][93][94] is the process of identifying the corresponding points in two images that are cast by the same physical point in the tridimensional space. This can be carried out pixel by pixel or identifying significant features in the images, such as edges, regions or interest points.…”

Section: Image Matching In Stereovision Within Fcm Frameworkmentioning

confidence: 99%

Fuzzy Photogrammetric Algorithm for City Built Environment Capturing into Urban Augmented Reality Model

Agbossou¹

2023

Advances in Fuzzy Logic Systems

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Cities are increasingly looking to become smarter and more resilient. Also, the use of computer vision takes a considerable place in the panoply of techniques and algorithms necessary for the 3D reconstruction of urban built environments. The models thus obtained make it possible to feed the logic of decision support and urban services thanks to the integration of augmented reality. This chapter describes and uses Fuzzy Cognitive Maps (FCM) as computing framework of visual features matching in augmented urban built environment modeling process. It is a combination of the achievements of the theory of fuzzy subsets and photogrammetry according to an algorithmic approach associated with the ARKit renderer. In this experimental research work, part of which is published in this chapter, the study area was confined to a portion of a housing estate and the data acquisition tools are in the domain of the public. The aim is the deployment of the algorithmic process to capture urban environments built in an augmented reality model and compute visual feature in stereovision within FCM framework. The comparison of the results obtained with our approach to two other well-known ones in the field, denotes the increased precision gain with a scalability factor.

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Augmented reality autostereoscopic 3D display based on sparse reflection array

Cited by 9 publications

References 28 publications

Multi-view autostereoscopic display based on tilt-fit lenticular lenses

Multi-view autostereoscopic display based on tilt-fit lenticular lenses

Effects of Eye Vergence and Accommodation on Interactions with Content on an AR Magic-lens Display and its Surroundings

Fuzzy Photogrammetric Algorithm for City Built Environment Capturing into Urban Augmented Reality Model

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