• Title/Summary/Keyword: Information Merging

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A Study for the Adaptive wavelet-based Image Merging method

  • Kim, Kwang-Yong;Yoon, Chang-Rak;Kim, Kyung-Ok
    • Journal of Korean Society for Geospatial Information Science
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    • v.10 no.5 s.23
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    • pp.45-51
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    • 2002
  • The goal of image merging techniques are to enhance the resolution of low-resolution images using the detail information of the high-resolution images. Among the several image merging methods, wavelet-based image merging techniques have the advantages of efficient decorrelation of image bands and time-scale analysis. However, they have no regard for spatial information between the bands. In other words, multiresolution data merging methods merge the same information-the detail information of panchromatic image-with other band images, without considering specific characteristics. Therefore, a merged image contains much unnecessary information. In this paper, we discussed this 'mixing' effect and, proposed a method to classify the detail information of the panchromatic image according to the spatial and spectral characteristics, and to minimize distortion of the merged image.

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Salient Object Detection via Adaptive Region Merging

  • Zhou, Jingbo;Zhai, Jiyou;Ren, Yongfeng
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.10 no.9
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    • pp.4386-4404
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    • 2016
  • Most existing salient object detection algorithms commonly employed segmentation techniques to eliminate background noise and reduce computation by treating each segment as a processing unit. However, individual small segments provide little information about global contents. Such schemes have limited capability on modeling global perceptual phenomena. In this paper, a novel salient object detection algorithm is proposed based on region merging. An adaptive-based merging scheme is developed to reassemble regions based on their color dissimilarities. The merging strategy can be described as that a region R is merged with its adjacent region Q if Q has the lowest dissimilarity with Q among all Q's adjacent regions. To guide the merging process, superpixels that located at the boundary of the image are treated as the seeds. However, it is possible for a boundary in the input image to be occupied by the foreground object. To avoid this case, we optimize the boundary influences by locating and eliminating erroneous boundaries before the region merging. We show that even though three simple region saliency measurements are adopted for each region, encouraging performance can be obtained. Experiments on four benchmark datasets including MSRA-B, SOD, SED and iCoSeg show the proposed method results in uniform object enhancement and achieve state-of-the-art performance by comparing with nine existing methods.

OXC structure for MPλS merging implementation based on WDM network (WDM망 기반의 MPλS merging 구현을 위한 OXC 구조)

  • Kim, Kyeong-Mok;Cho, Yang-Hyuon;Oh, Young-Hwan
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.3B
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    • pp.183-190
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    • 2003
  • The explosion of the Internet has brought an acute need for efficient operation, which becomes to develop several technologies based on optical networks. By matching merging technology using wavelength multiplexing, an efficient administration with limited wavelength can provide scalability of network. The merging in optical layer has limitation of devices since the merging can not be performed in this layer. Hence the merging must be implemented in electronic layer. When the merging is implemented, the delay time would be increased in OXC (Optical Cross Connection), but the improvement of throughput rate will be expected in the process of explosive traffic due to reduction of optical channel supporting large bandwidth. In this thesis, we proposed an OXC of dual module having a merging function. We considered the optimum merging point with the largest in system performance and confirmed results using the simulation.

Local Watershed and Region Merging Algorithm for Object Segmentation (객체분할을 위한 국부적 워터쉐드와 영역병합 알고리즘)

  • Yu, Hong-Yeon;Hong, Sung-Hoon
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.299-300
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    • 2006
  • In this paper, we propose a segmentation algorithm which combines the ideas from local watershed transforms and the region merging algorithm based hierarchical queue. Only the process of watershed and region merging algorithm can be restricted area. A fast region merging approach is proposed to extract the video object from the regions of watershed segmentation. Results show the effectiveness and convenience of the approach.

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Texture Coding in MPEG-4 Using Modified Boundary Block Merging Technique (변형된 경제 블록 병합 기법을 이용한 MPEG-4의 텍스처 부호화)

  • 김두석;고형화
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.25 no.4B
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    • pp.725-733
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    • 2000
  • In this paper, we propose a modified boundary block merging technique for the texture coding of MPEG-4. We propose an ORP(Optimized Region Partitioning) method that partition the VOP-based reference position to minimize the number of coding blocks. The merging possibility is improved by adding +90。and -90。 Rotation merging. We propose a MRM(Multiple Rotation Merging) method which applies the rotation merging in the order of 180。, +90。and -90。. If a pair of boundary blocks has low correlation, existing BBM's padding technique is not efficient. Our padding after merging method gives better result even if it has low correlation. The proposed method showed 5 ~8(%) coding bit reduction at the same PSNR values compared to BBM method.

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A Study on the Efficiency of the Mergers & Acquisition -focus on the Cost analysis- (합병기업의 효율성에 관한 연구 -합병기업의 비용항목 분석-)

  • Chung Bhum-Suk
    • Management & Information Systems Review
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    • v.6
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    • pp.117-135
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    • 2001
  • This study investigates whether the post-merger bad performance of merging firms was caused by the increase of cost and which cost is responsible for that, if it were. To do this, it is investigated whether there is any difference in terms of cost between pre-merger versus post-merger firms. Also the comparison of cost is used between merging firms and non-merging control groups. The finding is that the merging firms have a bigger cost than the non-merging control group and the post-merger firms have a bigger cost than the pre-merger firms. Especially labor cost to revenue and depreciation cost to revenue are statistically very different among them. Thus it is suggested that there are inefficiency of manpower and assets.

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A Study on Reducing Buffer for VC-Merge Capable ATM Switch (VC-Merge Capable ATM Switch의 버퍼용량 축소에 관한 연구)

  • 유정욱;조양현;오영환
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.26 no.6A
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    • pp.1060-1066
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    • 2001
  • 레이어2 스위칭과 레이어3 라우팅의 통합 모델로써 MPLS(Multi-Protocol Label Switching) 환경에서 ATM LSR(Label-Switching Routers)은 백본망에서의 고속 전송이 가능하여 현재의 라우터 구조로써 제안되어지고 있다. MPLS가 코어 라이터로써 적용이 될 경우 확장성을 위해 label merging이라는 기술이 필요하다. VC(Virtual Circuit) merging은 ATM LSR에서 많은 IP 라우터를 하나의 라벨로 매핑을 시키며 수천 개의 목적지에 전송할 수 있는 확장성 있는 매핑 기술이다. VC merging은 같은 목적지인 다른 패킷들 간의 셀들의 섞임을 방지하기 위해 재 조합 버퍼가 요구된다. 재 조합 버퍼 사용시 일시적인 체증 현상이 발생하며 Non-VC merging과 비교시 많은 셀 손실과 많은 버퍼를 요구하게 된다. 본 논문에서는 RED(Random Early Detection) 알고리즘을 적용하여 VC merging이 필요한 버퍼의 요구량과 셀 손실을 줄였다.

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Study on operation for VC merging equipment (VC merging 장치의 운용 방법에 관한 연구)

  • Yun, Bin-Yeong;Jeong, Youn-Kwae;Kim, Whan-Woo
    • Proceedings of the Korea Information Processing Society Conference
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    • 2000.10b
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    • pp.1537-1540
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    • 2000
  • MPLS 는 ATM 과 같은 기존의 레이어 2 계층의 스위칭 기술을 사용하여 IP와 같은 레이어 3 계층기능을 효과적으로 제공하기 위해서 제안되었다. 이러한 MPLS가 코어라우터에 적용될 때 확장성을 제공하기 위한 필수적인 방안으로 VC merging 기능이 요구된다. VC merging 기능은 수신된 ATM 셀들을 VCC 별로 AAL5 프레임 단위로 다중화하고 동일한 목적지를 갖는 ATM 셀에 대해서 동일한 VPI/VCI 값을 갖도록 ATM 셀을 생성한다. 본 논문에서는 최대 1Gbps 데이터를 처리하는 SAR 소자를 사용하여 VC merging 장치를 구현하였다. 그리고 이를 MPLS 망에 적용시키기 위해서 VCC 연결 설정에 제한성을 갖는 SAR 소자에도 적용 가능한 연결 설정 및 해제 절차를 제공하였다.

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EMPS : An Efficient Software Merging Technique for Preserving Semantics (EMPS : 의미를 보존하는 효율적인 소프트웨어 병합)

  • Kim Ji-Sun;Youn Cheong
    • The KIPS Transactions:PartD
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    • v.13D no.2 s.105
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    • pp.223-234
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    • 2006
  • Branching and merging have been being the outstanding methods for SCM in terms of supporting parallel developments. Since well-known commercial merging tools based on textual merging have not detecting semantics conflicts, they can cause semantic errors in the result of merging. Although a lot of researches for detecting semantic conflict and merging up to recently, these researches have been doing individually. Therefore, it is necessary for a research detecting semantic conflict on textual merging and solving it. In this paper, we propose a new method for merging which preserve semantics on textual merging. The method merging two revisions from a source program is as follows : 1) defining changing operations, which include Update, Delete, and Insert operation, per line on two revisions corresponding to the line in source program, 2) detecting textual conflicts and semantic conflict in terms of executional behaviors, 3) solving these conflicts before merging. So, the proposed method can be regarded as a hybrid method that combines a method of textual merging and a behavioral semantic merging.

Cell-interleavd VC merging scheme for multipoint-to-multipoint communication in ATM network (ATM 망에서의 다자간 통신을 위한 cell-interleaved VC merging 기법)

  • 신상헌
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.25 no.9A
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    • pp.1431-1440
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    • 2000
  • In order to support efficiently the multimedia applications, such as virtual classroom, video conferencing and tele-medical, the efficient multipoint-to-multipoint(MP-to-MP) connection management function is essential. Shared tree is reported as the most useful method for this purpose. In this paper we propose a new MP-to-MP connection setup & management scheme, called CIMA(Cell Interleaved Multiplexing on ATM) scheme,which is a VC merging method for MP-to-MP communication using shared tree. In the CIMA scheme,MRM cell delivers the cell merging information to the next node. The receiving node can identfy cells which arrived through a channel using the same VPI/VCI by the merging information in the MRM cell. Therefore the CIMA scheme can solve easily the Cell Interleaving Problem(CIP) that happens in VC merging. We analyzed the overhead of the proposed CIMA by mathematical analysis,and simulated the buffer usage of CIMA with OPNET. As the result of analysis,we found that the CIMA scheme has acceptable merging overhead and doesn't cause the buffer scare problem.

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