A5100765041- Advanced Optical Imaging Technologies
- Advanced Vision and Imaging
- Video Coding and Compression Technologies
- Digital Holography and Microscopy
- Photorefractive and Nonlinear Optics
- Multimedia Communication and Technology
- Image and Video Quality Assessment
- Telecommunications and Broadcasting Technologies
- Advanced Data Storage Technologies
- Video Analysis and Summarization
- Advanced Data Compression Techniques
- Image Processing Techniques and Applications
- Optical measurement and interference techniques
- Advanced Image and Video Retrieval Techniques
- Virtual Reality Applications and Impacts
- Cloud Computing and Resource Management
- Interactive and Immersive Displays
- Data Management and Algorithms
- Advanced Image Processing Techniques
- Topological Materials and Phenomena
- Music and Audio Processing
- Semiconductor materials and devices
- Parallel Computing and Optimization Techniques
- Liquid Crystal Research Advancements
- Graphene research and applications
Chosun University
2023
Delft University of Technology
2023
Daegu Gyeongbuk Institute of Science and Technology
2020-2023
Electronics and Telecommunications Research Institute
2012-2021
Rutgers, The State University of New Jersey
2018-2019
Ulsan National Institute of Science and Technology
2012-2018
California State University, Northridge
2016
SK Group (South Korea)
2012-2015
Institutul de Cercetari Electrotehnice
2015
Chungnam National University
2014
We demonstrate a tabletop holographic display system for simultaneously serving continuous parallax 3.2-inch 360-degree three-dimensional image content to multiple observers at 45-degree oblique viewing circumference. To achieve this, localized windows are be seamlessly generated on the In proposed system, four synchronized high-speed digital micro-mirror displays optically configured comprise single 2 by multi-vision panel that enables size enlargement and time-division-multiplexing of...
Emerging byte-addressable non-volatile memory is considered an alternative storage device for database logs that require persistency and high performance. In this work, we develop NVWAL (NVRAM Write-Ahead Logging) SQLite. The contribution of consists three elements: (i) byte-granularity differential logging effectively eliminates the excessive I/O overhead filesystem-based or journaling, (ii) transaction-aware lazy synchronization reduces cache by two-thirds, (iii) user-level heap management...
Much of the dramatic growth in research on topological materials has focused topologically protected surface states. While domain walls such as Weyl semimetals with broken inversion or time-reversal symmetry can provide a hunting ground for exploring interfacial states, investigations have received little attention to date. Here, utilizing in-situ cryogenic transmission electron microscopy combined first-principles calculations, we discover intriguing domain-wall structures MoTe2, both...
Digital watermark technology is now drawing attention as a new method of protecting digital content from unauthorized copying. This paper presents novel audio watermarking algorithm to protect against copying audio. The proposed scheme includes psychoacoustic model MPEG coding ensure that the does not affect quality original sound. After embedding watermark, our extracts copyright information without access signal by using whitening procedure for linear prediction filtering before...
In this paper, we present an efficient approach for the compression of stereoscopic video sequences. By extending H.264/AVC-based multi-view coding (MVC) codec as described in a previous paper to mixed-resolution imagery, i.e., videos where right-eye view had been spatially down-sampled order reduce total amount data be encoded, are able combine benefits both disparity-compensated prediction (DCP) and asymmetric coding. doing so, expect achieve very high gains without reducing overall visual...
A novel approach to camera motion analysis is proposed index videos compressed in MPEG-1 or MPEG-2. Specifically, it fits the vectors MPEG stream into two-dimensional affine model detect basic operations automatically. The involves (1) construction of vector fields (MVFs) by normalizing types and filtering out noise; (2) qualitative interpretation motions from estimated parameters two levels (frame temporal segment). Fine segmentation can also be obtained for a video, based on homogeneity...
Ab initio electronic structure calculations reveal that tetragonal distortion has a dramatic effect on the relative stability of various magnetic structures (C-, A-, G-, ${\mathrm{A}}^{\ensuremath{'}}$-AFM, and FM) FeRh giving rise to wide range novel stable/metastable phase transitions between these states. We predict cubic G-AFM structure, which was believed thus far be ground state, is metastable tetragonally expanded stable structure. The low energy barrier separating states suggests...
A middle-1x nm design rule multi-level NAND flash memory cell (M1X-NAND) has been successfully developed for the first time. 1) QSPT (Quad Spacer Patterning Technology) of ArF immersion lithography is used patterning mid-1x wordline (WL). In order to achieve high performance and reliability, several integration technologies are adopted, such as 2) advanced WL air-gap process, 3) floating gate slimming 4) optimized junction formation scheme. And also, by using 5) new N±1 Vpass scheme during...
A fast intra-prediction method is proposed for High Efficiency Video Coding (HEVC) using a intra-mode decision and coding unit (CU) size decision. HEVC supports very sophisticated intra modes recursive quadtree-based CU structure. To provide high efficiency, the mode are selected in rate-distortion optimized manner. This causes computational complexity encoder, and, practical applications, should be significantly reduced. In this paper, among many predefined modes, chosen without...
Recently, holographic display and computer-generated holograms calculated from real existing objects have been more actively investigated to support video applications. In this paper, we proposed a method of generating 360-degree color 3D in an efficient manner. images are generated using the actual image acquisition system consisting depth camera turntable intermediate view generation. Then, viewing-window-based hologram. We confirmed that floating faithfully reconstructed around direction...
A holographic display system with a 22-inch LCD panel is developed to provide wide viewing angle and large 3D image. It realized by steering narrow window resulting from very pixel pitch compared the wave length of laser light. Point light sources lens array make it possible arbitrarily control position for moving observer. The provides both eyes observer image using two vertically placed panels beam splitter support stereogram.
Inherently multi-dimensional n-ary indexing structures such as R-trees are not well suited for the GPU because of their irregular memory access patterns and recursive back-tracking function calls. It has been known that traversing hierarchical tree in an manner makes it difficult to exploit parallelism maximize utilization processing units. Moreover, search algorithms often fail with large indexes GPU's tiny runtime stack size. In this paper, we propose a novel parallel traversal...
Emerging byte-addressable non-volatile memory (NVRAM) is expected to replace block device storages as an alternative low-latency persistent storage device. If NVRAM used a device, cache line instead of disk page will be the unit data transfer, consistency, and durability. In this work, we design develop clfB-tree —a B-tree structure whose tree node fits in single line. We employ existing write combining store buffer restricted transactional provide failure-atomic operation. Using operations,...
Advanced dual control gate with surrounding floating (DC-SF) cell process and operation schemes are successfully developed for 3-D nand flash memories. To improve performance reliability of DC-SF cell, new metal last (MCGL) is developed. The MCGL can realize a low resistive tungsten (W) wordline, damage on tunnel oxide/inter-poly dielectric (IPD), preferable (FG) shape. Also, read program In the operation, higher lower Vpass-read alternately applied to unselected gates compensate lowering FG...
Exotic links and chains attract interest across various disciplines including mathematics, biology, chemistry, physics. Here, we propose that topological Hopf-chain networks, consisting of one-, two-, three-dimensional (3D) Hopf chains, can be found in the momentum space. These networks evolved from a 3D triple-points phase by varying symmetries. Moreover, identify exist family crystals...
Program disturbance characteristics of 3D vertical NAND Flash cell array architecture have been investigated intensively. A new 'program Y disturbance' mode peculiar to is defined. Swing poly-Si channel and increased NOP (number program) stress compared with 2D planar cell. In this paper, program method pertinent memory was proposed obtain for MLC.
A new Metal Control Gate Last process (MCGL process) has been successfully developed for the DC-SF (Dual gate with Surrounding Floating cell)[1] three-dimensional (3D) NAND flash memory. The MCGL can realize a low resistive tungsten (W) metal word-line high-k IPD, damage on tunnel oxide/IPD, and preferable FG shape. And also, conventional bulk erase be used, replaced GIDL in BiCS[3][4], due to direct connection between channel poly p-well by contact holes. Therefore, using process, high...
This paper analyzes the feasibility of a new 3DTV broadcasting service scenario via Advanced Television Systems Committee Mobile/Handheld (ATSC-M/H). We suggest dual-channel system in which left-view image is encoded by MPEG-2 with HD quality and small-sized right-view AVC. Also, left view transmitted through ATSC main channel right ATSC-M/H channel. Although transport stream formats two channels are different from each other, we demonstrate that it possible for 2.0 decoder to synchronize...
This paper presents a 64Gb MLC NAND-Flash memory fabricated with 16nm CMOS process technology to achieve high density and as small 93.4mm2 die area. The chip consists of two planes 1072 blocks each. A block string 128 cells page size 16KB spare area for error-correction coding (ECC), totaling 4MB capacity. supports negative-level wordline drivability increase cell Vth margin.
Recent developments in topological semimetals open a way to realize relativistic dispersions condensed-matter systems. One recently studied type of feature is the ``triple nodal point'' where three bands become degenerate. In contrast Weyl and Dirac nodes, triple points, which are protected by rotational symmetry, have lines attached, so that characterization terms chirality not possible. Previous studies points considered nonmagnetic systems, although an artificial Zeeman splitting was used...
The use of human gesturing to interact with devices such as computers or smartphones has presented several problems. This form interaction relies on gesture technology Leap Motion from Motion, Inc, which enables humans hand gestures a computer. excellent detection performance, and even allows simple games be played using gestures. Another example is the contactless smartphone take photograph by simply folding opening palm. Research other via in progress. Similarly, studies creation hologram...