• Title, Summary, Keyword: Spatial feature

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Image Description and Matching Scheme Using Synthetic Features for Recommendation Service

  • Yang, Won-Keun;Cho, A-Young;Oh, Weon-Geun;Jeong, Dong-Seok
    • ETRI Journal
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    • v.33 no.4
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    • pp.589-599
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    • 2011
  • This paper presents an image description and matching scheme using synthetic features for a recommendation service. The recommendation service is an example of smart search because it offers something before a user's request. In the proposed extraction scheme, an image is described by synthesized spatial and statistical features. The spatial feature is designed to increase the discriminability by reflecting delicate variations. The statistical feature is designed to increase the robustness by absorbing small variations. For extracting spatial features, we partition the image into concentric circles and extract four characteristics using a spatial relation. To extract statistical features, we adapt three transforms into the image and compose a 3D histogram as the final statistical feature. The matching schemes are designed hierarchically using the proposed spatial and statistical features. The result shows that each feature is better than the compared algorithms that use spatial or statistical features. Additionally, if we adapt the proposed whole extraction and matching scheme, the overall performance will become 98.44% in terms of the correct search ratio.

Linear Feature Simplification Using Wavelets in GIS

  • Liang, Chen;Lee, Chung-Ho;Kim, Jae-Hong;Bae, Hae-Young
    • Proceedings of the Korean Information Science Society Conference
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    • pp.151-153
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    • 2001
  • Feature Simplification is an essential method for multiple representations of spatial features in GIS. However, spatial features re various, complex and a alrge size. Among spatial features which describe spatial information. linear feature is the msot common. Therefore, an efficient linear feature simplification method is most critical for spatial feature simplification in GIS. This paper propose an original method, by which the problem of linear feature simplification is mapped into the signal processing field. This method avoids conventional geometric computing in existing methods and exploits the advantageous properties of wavelet transform. Experimental results are presented to show that the proposed method outperforms the existing methods and achieves the time complexity of O(n), where n is the number of points of a linear feature. Furthermore, this method is not bound to two-dimension but can be extended to high-dimension space.

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FEATURE-BASED SPATIAL DATA MODELING FOR SEAMLESS MAP, HISTORY MANAGEMENT AND REAL-TIME UPDATING

  • Kim, Hyeong-Soo;Kim, Sang-Yeob;Seo, Sung-Bo;Kim, Hi-Seok;Ryu, Keun-Ho
    • Proceedings of the KSRS Conference
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    • pp.433-436
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    • 2008
  • A demand on the spatial data management has been rapidly increased with the introduction and diffusion process of ITS, Telematics, and Wireless Sensor Network, and many different people use the digital map that offers various thematic spatial data. Spatial data for digital map can manage to tile-based and feature-based data. The existing tile-based digital map management systems have difficult problems of data construction, history management, and updating based on a spatial object. In order to solve these problems, this paper proposed the data model for the feature-based digital map management system that is designed for feature-based seamless map, history management, real-time updating of spatial data, and analyzed the validity and utility of the proposed model.

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Representation of Spatial Relationships for Sheet Metal Weld Assemblies Modeling (박판 용접구조물의 모델링을 위한 공간관계 표현)

  • 김동원;김경윤
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.400-404
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    • 1997
  • This paper presents spatial relationshaps and engineering features for the feature based modeling of Sheet Metal Weld Assemblies (SMWA) that are made of sheet metal components through are welding processes. Spatial relationships in ProMod-S, a sheet metal product modeler,are further extended for the SMWA modeling. Some spatial relationships for special weld joint types are newly introduced. The geometrical and topological relations between spatial reationship, mating features, and assembly features are defined. Finally, assembly data stucturess for the product modeling of SMWA are proposed. They are an engineering relation to represent the constraints between component features, and a mating bond to integrate component design information.

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A Study on the Architectural planning of Spatial Organization Feature in Emergency Medical Facilities (응급의료시설의 공간구성요소에 관한 건축계획적 연구)

  • Choi, Chung-Ho;Park, Jae-Seung
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.14 no.2
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    • pp.25-34
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    • 2008
  • The purpose of this study was to spatial organization feature and area composition of the over 500beds general hospital that will be expected construct in Seoul, Gyeonggi-do area after 2000year. From this study, we can suggest architectural planning for the efficiency operating of emergency medical facilities that can be used as preliminary data. The Spatial organization of emergency medical facilities are categorize into 4 session as medical examination and treatment, diagonosticradiology, staff, public and the others. We can find spatial organization system and area composition that compare area composition of 6 hospital the subject of research in a emergency medical facilities. The result of this study were as follows : spatial distribution of its field, grasping of spatial organization factor and recognize its merits and demerits should be researched in advance. Through this kind of recognizing emergency system, realistic medical local and condition architectural planning for spatial organization will be operate.

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Automated Vinyl Green House Identification Method Using Spatial Pattern in High Spatial Resolution Imagery (공간패턴을 이용한 자동 비닐하우스 추출방법)

  • Lee, Jong-Yeol;Kim, Byoung-Sun
    • Korean Journal of Remote Sensing
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    • v.24 no.2
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    • pp.117-124
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    • 2008
  • This paper introduces a novel approach for automated mapping of a map feature that is vinyl green house in high spatial resolution imagery Some map features have their unique spatial patterns. These patterns are normally detected in high spatial resolution remotely sensed data by human recognition system. When spatial patterns can be applied to map feature identification, it will improve image classification accuracy and will be contributed a lot to feature identification. In this study, an automated feature identification approach using spatial aucorrelation is developed, specifically for the vinyl green house that has distinctive spatial pattern in its array. The algorithm aimed to develop the method without any human intervention such as digitizing. The method can investigate the characteristics of repeated spatial pattern of vinyl green house. The repeated spatial pattern comes from the orderly array of vinyl green house. For this, object-based approaches are essential because the pattern is recognized when the shapes that are consists of the groups of pixels are involved. The experimental result shows very effective vinyl house extraction. The targeted three vinyl green houses were exactly identified in the IKONOS image for a part of Jeju area.

A STUDY ON SPATIAL FEATURE EXTRACTION IN THE CLASSIFICATION OF HIGH RESOLUTIION SATELLITE IMAGERY

  • Han, You-Kyung;Kim, Hye-Jin;Choi, Jae-Wan;Kim, Yong-Il
    • Proceedings of the KSRS Conference
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    • pp.361-364
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    • 2008
  • It is well known that combining spatial and spectral information can improve land use classification from satellite imagery. High spatial resolution classification has a limitation when only using the spectral information due to the complex spatial arrangement of features and spectral heterogeneity within each class. Therefore, extracting the spatial information is one of the most important steps in high resolution satellite image classification. In this paper, we propose a new spatial feature extraction method. The extracted features are integrated with spectral bands to improve overall classification accuracy. The classification is achieved by applying a Support Vector Machines classifier. In order to evaluate the proposed feature extraction method, we applied our approach to KOMPSAT-2 data and compared the result with the other methods.

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Multiscale Spatial Position Coding under Locality Constraint for Action Recognition

  • Yang, Jiang-feng;Ma, Zheng;Xie, Mei
    • Journal of Electrical Engineering and Technology
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    • v.10 no.4
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    • pp.1851-1863
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    • 2015
  • – In the paper, to handle the problem of traditional bag-of-features model ignoring the spatial relationship of local features in human action recognition, we proposed a Multiscale Spatial Position Coding under Locality Constraint method. Specifically, to describe this spatial relationship, we proposed a mixed feature combining motion feature and multi-spatial-scale configuration. To utilize temporal information between features, sub spatial-temporal-volumes are built. Next, the pooled features of sub-STVs are obtained via max-pooling method. In classification stage, the Locality-Constrained Group Sparse Representation is adopted to utilize the intrinsic group information of the sub-STV features. The experimental results on the KTH, Weizmann, and UCF sports datasets show that our action recognition system outperforms the classical local ST feature-based recognition systems published recently.

Spatial Data Model of Feature-based Digital Map using UFID (UFID를 이용한 객체기반 수치지도 공간 데이터 모델)

  • Kim, Hyeong-Soo;Kim, Sang-Yeob;Lee, Yang-Koo;Seo, Sung-Bo;Park, Ki-Surk;Ryu, Keun-Ho
    • Journal of Korea Spatial Information System Society
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    • v.11 no.1
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    • pp.71-78
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    • 2009
  • A demand on the spatial data management has been rapidly increased with the introduction and diffusion process of ITS, Telematics, and Wireless Sensor Network. And many different users use the digital map that offers various thematic spatial data. Spatial data for digital map can be managed by tile-based and feature-based data. The existing tile-based digital map management systems have difficult problems such as data construction, history management, and update data based on a spatial object. In order to solve these problems, we proposed the data model for feature-based digital map management system for representation of feature-based seamless map, history management, real-time update of spatial data, and analyzed the validity and utility of the proposed model.

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Using Spatial Pyramid Based Local Descriptor for Face Recognition (공간 계층적 구조 기반 지역 기술자 활용 얼굴인식 기술)

  • Kim, Kyeong Tae;Choi, Jae Young
    • Journal of Korea Multimedia Society
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    • v.20 no.5
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    • pp.758-768
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    • 2017
  • In this paper, we present a novel method to extract face representation based on multi-resolution spatial pyramid. In our method, a face is subdivided into increasingly finer sub-regions (local regions) and represented at multiple levels of histogram representations. To cope with misaligned problem, patch-based local descriptor extraction has been also developed in a novel way. To preserve multiple levels of detail in local characteristics and also encode holistic spatial configuration, histograms from all levels of spatial pyramid are integrated by using dimensionality reduction and feature combination, leading to our spatial-pyramid face feature representation. We incorporate our proposed face features into general face recognition pipeline and achieve state-of-the-art results on challenging face recognition problems.