• Title/Summary/Keyword: information mapping

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Designing on improved combined mapping based on soft-decision for wideband LSP coefficients pattern estimation (광대역 LSP 계수의 패턴 추론을 위한 연판정 기반 개선된 조합 매핑 설계)

  • Jeon, Jong-geun
    • Proceedings of the Korea Information Processing Society Conference
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    • 2018.10a
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    • pp.805-807
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    • 2018
  • 본 논문은 인공 대역 확장에서 스펙트럼 포락선 확장 시 발생하는 스펙트럼 왜곡을 줄이는 개선된 조합 매핑(Improved combined mapping) 알고리즘을 제안한다. 벡터양자화를 기반으로 하는 코드북 매핑(Codebook mapping)과 스펙트럼 포락선(Spectrum Envelope)의 선형 의존도를 이용한 선형 매핑(Linear mapping)을 사용하여 각각 확장된 광대역 LSP(Line Spectrum Pair)를 추론하고, 연판정(Soft-decision)을 통해 최적화된 LSP를 추론한다. 제안된 알고리즘으로 합성된 음성신호의 스펙트럼 왜곡(Spectrum Distortion)이 기존 조합매핑으로 얻은 음성 신호의 스펙트럼 왜곡보다 더 적은 왜곡을 갖는 결과를 나타내었다.

A Study of Reuse Module Generation Algorithm consider the Power Consumption for FPGA Technology Mapping (FPGA 기술 매핑을 위한 소모 전력을 고려한 재사용 모듈 생성 알고리즘에 관한 연구)

  • Youn, Choong-Mo;Kim, Jae-Jin
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.11 no.12
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    • pp.2306-2310
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    • 2007
  • In this paper, reuse module generation algorithm consider the power consumption for FPGA technology mapping is proposed. To proposed algorithm is RT library generating algorithm, consider power consumption for reuse module using FPGA technology mapping. In the first, selected FPGA for power consumption calculation. Technology mapping process have minimum total power consumption consider LUT's constraint in selected FPGA. A circuit into device by selected proper modules of allocation result for power consumption constraint using data.

Visual Positioning System based on Voxel Labeling using Object Simultaneous Localization And Mapping

  • Jung, Tae-Won;Kim, In-Seon;Jung, Kye-Dong
    • International Journal of Advanced Culture Technology
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    • v.9 no.4
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    • pp.302-306
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    • 2021
  • Indoor localization is one of the basic elements of Location-Based Service, such as indoor navigation, location-based precision marketing, spatial recognition of robotics, augmented reality, and mixed reality. We propose a Voxel Labeling-based visual positioning system using object simultaneous localization and mapping (SLAM). Our method is a method of determining a location through single image 3D cuboid object detection and object SLAM for indoor navigation, then mapping to create an indoor map, addressing it with voxels, and matching with a defined space. First, high-quality cuboids are created from sampling 2D bounding boxes and vanishing points for single image object detection. And after jointly optimizing the poses of cameras, objects, and points, it is a Visual Positioning System (VPS) through matching with the pose information of the object in the voxel database. Our method provided the spatial information needed to the user with improved location accuracy and direction estimation.

Extended and Adaptive Inverse Perspective Mapping for Ground Representation of Autonomous Mobile Robot (모바일 자율 주행 로봇의 지면 표현을 위한 확장된 적응형 역투영 맵핑 방법)

  • Jooyong Park;Younggun Cho
    • The Journal of Korea Robotics Society
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    • v.18 no.1
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    • pp.59-65
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    • 2023
  • This paper proposes an Extended and Adaptive Inverse Perspective Mapping (EA-IPM) model that can obtain an accurate bird's-eye view (BEV) from the forward-looking monocular camera on the sidewalk with various curves. While Inverse Perspective Mapping (IPM) is a good way to obtain ground information, conventional methods assume a fixed relationship between the camera and the ground. Due to the nature of the driving environment of the mobile robot, there are more walking environments with frequent motion changes than flat roads, which have a fatal effect on IPM results. Therefore, we have developed an extended IPM process to be applicable in IPM on sidewalks by adding a formula for complementary Y-derive processes and roll motions to the existing adaptive IPM model that is robust to pitch motions. To convince the performance of the proposed method, we evaluated our results on both synthetic and real road and sidewalk datasets.

A Study on Web-based Mobile Mapping System Using Real-Time GPS/INS System (실시간 GPS/INS 시스템을 이용한 웹기반 모바일 매핑시스템 연구)

  • 이종기;김병국;권재현
    • Spatial Information Research
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    • v.11 no.3
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    • pp.291-299
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    • 2003
  • The Mobile Mapping System collects geographic information through mounted sensors such as a pair of CCD camera, CPS, IMU(Inertial Measurement Unit) and Odometer at regular distance or time interval. The advantage of such system is to easy identification of positions and geographic informations of mobile objects in real time. Among many wireless communication ways for real-time positions and geographic information data from the mobile mapping system to the user such as PDA, wireless modem, cellophane, and web, the web is considered to be more stabile, effect and economic than any other methods. In this paper, a study on the web-based real-time mobile mapping platform to identify the user position is presented using the real-time NovAtel BDS.

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A Study on Metadata Mapping for Semantic Interoperability (의미 호환을 위한 메타데이터 매핑 연구)

  • Ko, Young-Man;Seo, Tae-Sul;Lim, Tae-Hoon
    • Journal of the Korean Society for information Management
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    • v.24 no.4
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    • pp.223-238
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    • 2007
  • This paper contains an analysis of the methods that have been used to achieve or improve interoperability among metadata and discuss the possibilities and limits of semantic interoperability among metadata using crosswalk. After that a semantic metadata mapping process which is able to maximize the interoperability among metadata is suggested. The methodology consists of four steps such as identifying metadata schema, finding common data element concepts(DECs), grouping attributes by the DECs, and mapping into a table. An experimental application of the process was performed onto two human resource information metadata standards developed in Korea.

Model for Mobile Online Video viewed on Samsung Galaxy Note 5

  • Pal, Debajyoti;Vanijja, Vajirasak
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.11 no.11
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    • pp.5392-5418
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    • 2017
  • The primary aim of this paper is to propose a non-linear regression based technique for mapping different network Quality of Service (QoS) factors to an integrated end-user Quality of Experience (QoE) or Mean Opinion Score (MOS) value for an online video streaming service on a mobile phone. We use six network QoS factors for finding out the user QoE. The contribution of this paper is threefold. First, we investigate the impact of the network QoS factors on the perceived video quality. Next, we perform an individual mapping of the significant network QoS parameters obtained in stage 1 to the user QoE based upon a non-linear regression method. The optimal QoS to QoE mapping function is chosen based upon a decision variable. In the final stage, we evaluate the integrated QoE of the system by taking the combined effect of all the QoS factors considered. Extensive subjective tests comprising of over 50 people across a wide variety of video contents encoded with H.265/HEVC and VP9 codec have been conducted in order to gather the actual MOS data for the purpose of QoS to QoE mapping. Our proposed hybrid model has been validated against unseen data and reveals good prediction accuracy.

Development of Property Mapping Contents between Open BIM Data and Automated Code Checking System (개방형BIM 데이터와 법규 자동화 검토 시스템 간 속성 매핑 체계 개발)

  • Kim, Inhan;Bae, Jongyeon;Choi, Jungsik
    • Korean Journal of Computational Design and Engineering
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    • v.22 no.2
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    • pp.118-128
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    • 2017
  • Many countries have been developing BIM-based building code checking system and studies in the utilization of Industry Foundation Classes (IFC) in building code checking. IFC is the open standard of BIM format. Currently, there is a disadvantage that could not include all of the attribute for the regulations of each country and there is the problem with the interoperability of the different defined IFC approach between BIM software. This study focus on developing, derived object and property by comparing through domestic regulation and IFC2x3 specification provided by the buildingSMART and classified review type depending on the interoperability of derived information. According to classified review type, the IFC data structure was established and property mapping contents were developed by including BIM software compatible information and creating a type of review plan. When the developed property mapping contents are applied into BIM-based building code checking system, checking of the BIM data generated from various fields is made effective and thus improving the interoperability of information.

The SZIT based-mapping method for on-line adding disks in software RAID (소프트웨어 RAID에서 온라인 디스크 부착이 가능한 SZIT 기반 매핑 기법)

  • Bak, Yu-hyeon;Kim, Chang-soo;Kang, Dong-jae;Kim, Young-ho;Shin, Bum-joo
    • The KIPS Transactions:PartA
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    • v.9A no.4
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    • pp.535-546
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    • 2002
  • According as the users can connect to remote hosts at anytime by using internet, the demand of non-stop system is increased. Also, the research about on-line adding/deleting disks and hosts are progressed. This paper suggests that the method of reducing additional operation when we add disks to the stripping system. That method can fast mapping like equation based mapping method because of using so-called SZIT(Striping Zone Information Table) and equations. And that method can reduce the relocation overhead in striping system at adding disks.

Identification of Research Areas and Evolution of 2D Materials by the Keyword Mapping Methodology (키워드 매핑 기반 2차원 물질 연구 영역 탐지와 발전 과정 분석)

  • Ahn, Sejung;Lee, June Young
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.31 no.1
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    • pp.11-18
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    • 2018
  • Two-dimensional (2D) materials such as transition metal dichalcogenides have attracted tremendous scientific interests owing to their potential of solving the zero band-gap issue of graphene. In this work, the research areas and technology evolutionary dynamics of the 2D materials were identified using the scientometric method focusing on keyword mapping and clustering. The time-series analysis showed that the technological progress of 2D material is in the early growth period. The overlay mapping analysis were carried out to investigate the technology evolution of 2D materials with time. The strategic diagram of co-word analysis classifying the topological positions of keyword was derived to support the analysis results. It is conjectured that extensive research will be conducted widely on the application of 2D materials not only in electronic and optoelectronic devices, but also in various other fields such as biomedical applications, and that their development will be more rapid based on accumulated results of extant graphene research.