• Title/Summary/Keyword: Super frame

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Consecutive-Frame Super-Resolution considering Moving Object Region

  • Cho, Sung Min;Jeong, Woo Jin;Jang, Kyung Hyun;Choi, Byung In;Moon, Young Shik
    • Journal of the Korea Society of Computer and Information
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    • v.22 no.3
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    • pp.45-51
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    • 2017
  • In this paper, we propose a consecutive-frame super-resolution method to tackle a moving object problem. The super-resolution is a method restoring a high resolution image from a low resolution image. The super-resolution is classified into two types, briefly, single-frame super-resolution and consecutive-frame super-resolution. Typically, the consecutive-frame super-resolution recovers a better than the single-frame super-resolution, because it use more information from consecutive frames. However, the consecutive-frame super-resolution failed to recover the moving object. Therefore, we proposed an improved method via moving object detection. Experimental results showed that the proposed method restored both the moving object and the background properly.

Zigbee MAC Protocol based Super frame Design for In-body Nano-Network Applications (Zigbee MAC 프로토콜기반 인체 응용을 위한 나노 네트워크의 슈퍼 프레임 설계)

  • Lee, Kyung-Hwan;Kim, Sung-Un
    • Journal of Korea Multimedia Society
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    • v.19 no.9
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    • pp.1690-1697
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    • 2016
  • In a beacon-enabled Zigbee network, the slotted CSMA/CA mechanism based on the super frame structure fairly provides communication chance for each node and makes a reasonable usage of the available energy. In the case of wireless nano sensors that are implanted into the target human body area for detecting disease symptoms or virus, such a nano-network requires a similar type of channel sharing and transmission of short length event-driven data. In this paper, for nano-network's in-body applications, we aim to design conceptually a new super frame derived from the existing beacon-enabled Zigbee MAC protocol. And we analyze the efficiency of the proposed super frame in the aspect of practical deployment.

An Image Processing Speed Enhancement in a Multi-Frame Super Resolution Algorithm by a CUDA Method (CUDA를 이용한 초해상도 기법의 영상처리 속도개선 방법)

  • Kim, Mi-Jeong
    • Journal of the Korea Institute of Military Science and Technology
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    • v.14 no.4
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    • pp.663-668
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    • 2011
  • Although multi-frame super resolution algorithm has many merits but it demands too much calculation time. Researches have shown that image processing time can be reduced using a CUDA(Compute unified device architecture) which is one of GPGPU(General purpose computing on graphics processing unit) models. In this paper, we show that the processing time of multi-frame super resolution algorithm can be reduced by employing the CUDA. It was applied not to the whole parts but to the largest time consuming parts of the program. The simulation result shows that using a CUDA can reduce an operation time dramatically. Therefore it can be possible that multi-frame super resolution algorithm is implemented in real time by using libraries of image processing algorithms which are made by a CUDA.

Improvement of Frame Rate of Electro-Optical Sensor using Temporal Super Resolution based on Color Channel Extrapolation (채널별 색상정보 외삽법 기반 시간적 초해상도 기법을 활용한 전자광학 센서의 프레임률 향상 연구)

  • Noh, SangWoo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.5
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    • pp.120-124
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    • 2017
  • The temporal super resolution is a method for increasing the frame rate. Electro-optical sensors are used in various surveillance and reconnaissance weapons systems, and the spatial resolution and temporal resolution of the required electro-optical sensors vary according to the performance requirement of each weapon system. Because most image sensors capture images at 30~60 frames/second, it is necessary to increase the frame rate when the target moves and changes rapidly. This paper proposes a method to increase the frame rate using color channel extrapolation. Using a DMD, one frame of a general camera was adjusted to have different consecutive exposure times for each channel, and the captured image was converted to a single channel image with an increased frame rate. Using the optical flow method, a virtual channel image was generated for each channel, and a single channel image with an increased frame rate was converted to a color channel image. The performance of the proposed temporal super resolution method was confirmed by the simulation.

A frame detection method for DVB-S2x superframe receivers based on beam-hopping satellite transmission (빔-호핑 위성 전송 기반의 DVB-S2x 슈퍼프레임 수신기를 위한 프레임 검출 기법)

  • Oh, Jonggyu;Oh, Dukgil
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2017.11a
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    • pp.24-27
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    • 2017
  • 본 논문에서는 빔-호핑 위성 전송 기반의 DVB-S2x 슈퍼프레임 수신기를 위한 프레임 검출 기법을 제안한다. 제안하는 검출 기법은 2 체배 오버샘플링 레이트에서(over-sampling rate)에서 동작을 수행하며, 슈퍼프레임의 헤더를 구성하는 start of super-frame (SOSF)과 super frame format indicator (SFFI)를 모두 이용하여 하드웨어 복잡도를 줄이면서도 견고하게 프레임을 검출할 수 있다.

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Challenge in the Structural Design of Suzhou IFS

  • Zhou, Jianlong;Huang, Yongqiang
    • International Journal of High-Rise Buildings
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    • v.10 no.3
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    • pp.165-171
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    • 2021
  • Core-outrigger-mega frame system is used in Suzhou IFS with 95-story, 450 m-tall, which is beyond Chinese code limit. Besides simple introduction on design principle, structure system and analysis, key techniques including performance based design criteria, frame shear ratio, capacity check of mega column, human comfort criteria under wind induced vibration and TSD design were presented in details for reference of similar super tall building design.

Hybrid Super-Resolution Algorithm Robust to Cut-Change (컷 전환에 적응적인 혼합형 초고해상도 기법)

  • Kwon, Soon-Chan;Lim, Jong-Myeong;Yoo, Jisang
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.17 no.7
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    • pp.1672-1686
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    • 2013
  • In this paper, we propose a hybrid super-resolution algorithm robust to cut-change. Existing single-frame based super-resolution algorithms are usually fast, but quantity of information for interpolation is limited. Although the existing multi-frame based super-resolution algorithms generally robust to this problem, the performance of algorithm strongly depends on motions of input video. Furthemore at boundary of cut, applying of the algorithm is limited. In the proposed method, we detect a define boundary of cut using cut-detection algorithm. Then we adaptively apply a single-frame based super-resolution method to detected cut. Additionally, we propose algorithms of normalizing motion vector and analyzing pattern of edge to solve various problems of existing super-resolution algorithms. The experimental results show that the proposed algorithm has better performance than other conventional interpolation methods.

Economics on Structural Floor Systems of Super Tall Buildings

  • Shin Sung-Woo;Ahn Jong-Moon;Choi Myung-Shin;Seo Dae-Won;Kim Chul
    • Proceedings of the Korea Concrete Institute Conference
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    • 2004.11a
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    • pp.609-613
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    • 2004
  • An economic analysis is one of the most dominant factors to determine the project feasibility of super tall building. In economic considerations, it is very important toadopt optimum structural floor systems because these are dependent on both the cost and the duration of construction. The economics affected by structural floor systems are more distinct athigher story. As the story increases, the construction cost of floor system. is accumulated linearly, while the cost of lateral resisting system is increased geometrically. The purpose of this study is to investigate the economical effects of super tall buildings through application of optimum structural floor systems. Three types of structural systems(RC beam-column frame, RC flat plate frame, and Steel frame) of super tall buildings having 50-stories are considered in this study and compared to RC flat plate slab with other systems. Analytical result shows that RC flat plate slab using lightweight concrete ismost effective in both the cost and the duration of construction.

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Large-scale Seismic Response Analysis of Super-high-rise Steel Building Considering Soil-structure Interaction using K computer

  • Miyamura, Tomoshi;Akiba, Hiroshi;Hori, Muneo
    • International Journal of High-Rise Buildings
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    • v.4 no.1
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    • pp.75-83
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    • 2015
  • In the present study, the preliminary results of a large-scale seismic response analysis of a super-high-rise steel frame considering soil-structure interaction are presented. A seismic response analysis under the excitation of the JR Takatori record of the 1995 Hyogoken-Nanbu earthquake is conducted. Precise meshes of a 31-story super-high-rise steel frame and a soil region, which are constructed completely of hexahedral elements, are generated and combined. The parallel large-scale simulation is performed using K computer, which is one of the fastest supercomputers in the world. The results are visualized using an offline rendering code implemented on K computer, and the feasibility of using a very fine mesh of solid elements is investigated. The computation performance of the analysis code on K computer is also presented.

Enhanced Multi-Frame Based Super-Resolution Algorithm by Normalizing the Information of Registration

  • Kwon, Soon-Chan;Yoo, Jisang
    • Journal of Electrical Engineering and Technology
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    • v.9 no.1
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    • pp.363-371
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    • 2014
  • In this paper, a new super-resolution algorithm is proposed by using successive frames for generating high-resolution frames with better quality than those generated by other conventional interpolation methods. Generally, each frame used for super-resolution must only have global translation and motions of sub-pixel unit to generate good result. However, the newly proposed MSR algorithm in this paper is exempt from such constraints. The proposed algorithm consists of three main processes; motion estimation for image registration, normalization of motion vectors, and pattern analysis of edges. The experimental results show that the proposed algorithm has better performance than other conventional algorithms.