• 한국측량학회지
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• 제31권6_2호
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• pp.585-592
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• 2013

CBIR is an effective tool to search and extract image contents in a large remote sensing image database queried by an operator or end user. However, as imaging principles are different by sensors, their visual representation thus varies among image modality type. Considering images of various modalities archived in the database, image modality difference has to be tackled for the successful CBIR implementation. However, this topic has been seldom dealt with and thus still poses a practical challenge. This study suggests a cross modality CBIR (termed as the CM-CBIR) method that transforms given query feature vector by a supervised procedure in order to link between modalities. This procedure leverages the skill of analyst in training steps after which the transformed query vector is created for the use of searching in target images with different modalities. Current initial results show the potential of the proposed CM-CBIR method by delivering the image content of interest from different modality images. Despite its retrieval capability is outperformed by that of same modality CBIR (abbreviated as the SM-CBIR), the lack of retrieval performance can be compensated by employing the user's relevancy feedback, a conventional technique for retrieval enhancement.

• Journal of International Society for Simulation Surgery
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• 제1권2호
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• pp.62-66
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• 2014

Image registration is the process for finding the correct geometrical transformation that brings one image in precise spatial correspondence with another image. There are limitations on the visualization of simple overlay between two different modality images because two different modality images have different anatomical information, resolution, and viewpoint. In this paper, various image registration methods and their applications are introduced. With the recent advance of medical imaging device, image registration is used actively in diagnosis support, treatment planning, surgery guidance and monitoring the disease progression.

• 한국지능시스템학회논문지
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• 제19권3호
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• pp.304-310
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• 2009

본 논문은 bi-modality와 근접성(adjacency)을 고려하여 멤버쉽 값(membership value)을 결정하는 퍼지 임계화(fuzzy thresholding)에 기반한 FLIR(forward-looking infrared) 영상에서의 표적 추출 방법을 제안한다. Bi-modality는 국부 영역의 화소값 분포를 이용한 것으로 화소가 표적 부분으로 분류되는 정도를 나타내고, Adjacency는 각 화소가 표적 영역으로 부터 얼마나 떨어져 있는지를 나타내는 척도이다. 이 두 가지 척도를 이용하여 멤버쉽 값을 계산한 후, 퍼지 임계화 방법으로 표적을 추출한다. 제안한 표적 추출 방법의 성능을 평가하기 위해 다양한 실제 전차의 FLIR 영상을 이용하여 기존의 분할 방법과 비교한다. 실험을 통해 제안한 알고리즘이 우수한 분할 성능을 보임을 증명한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권11호
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• pp.4118-4136
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• 2014

To preserve the spatial consistency of low-level features, generalized Riesz-wavelet transform (GRWT) is adopted for fusing multi-modality images. The proposed method can capture the directional image structure arbitrarily by exploiting a suitable parameterization fusion model and additional structural information. Its fusion patterns are controlled by a heuristic fusion model based on image phase and coherence features. It can explore and keep the structural information efficiently and consistently. A performance analysis of the proposed method applied to real-world images demonstrates that it is competitive with the state-of-art fusion methods, especially in combining structural information.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2001년도 Bulletin of The 5th Asian Design Conference International Symposium on Design Science
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• pp.6.2-6
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• 2001

• 한국멀티미디어학회논문지
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• 제15권3호
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• pp.291-298
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• 2012

일반적인 ATR시스템에서는 대부분 FLIR센서에 의존하여 영상을 획득하나, 표적의 경계가 모호한 경우 견실한 표적 분할을 보장할 수 없는 한계점이 있다. 이에 본 논문은 FLIR과 CCD센서를 통해 획득된 영상에 대한 적응적 가중치 기반의 융합 방법을 제안함으로써 보다 정확한 표적 분할 성능을 재현한다. 융합을 위한 FLIR영상의 가중치는 모호한 경계를 구분하기 위한 bi-modality 척도와 표적 경계와의 거리를 통해 결정되고, CCD영상의 가중치는 표적과 배경의 질감차이를 나타내는 질감 척도와 거리 척도를 통해 도출된다. 제안 방법의 타당성 검증을 위하여 다양한 환경에서 획득된 표적 영상에 대한 제안 방법과 단일 센서 기반의 표적 분할의 성능 비교를 수행하였다.

• 반도체디스플레이기술학회지
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• 제18권1호
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• pp.102-104
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• 2019

Registering different kinds of clinical images widely used in diagnostic and surgery planning. However, cause of tumor growth or effected by gravity, human tissue has plenty of non-rigid deformation with clinically. Non-rigid registration allows the mapping of straight lines to curves. Therefore, such local deformation makes registration more complicated. In this work, we mainly introduce intra-subject, inter-modality registration. This paper mainly studies the nonlinear registration method of 2D medical image registration. The general medical image registration algorithm requires manual intervention, and cost long registration time. In our work to reduce the registration time in rough registration step, the barycenter and the direction of main axis of the image is calculated, which reduces the calculation amount compared with the method of using mutual information.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1998년도 추계학술대회
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• pp.299-300
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• 1998

Recently the development of medical modality like as MRI, 3D US, DR etc is very active. Therefore it is more required not only the enhancement of quality in medical service but the improvement of medical system based on quantization, minimization, and optimization of high speed. Especially, as the changing into the digital modality system, it gets to start using ASIC(Application Specific Integrated Circuit) to realize one board system. It requires the implementation of hardware debugging and effective speedy algorithm with more speed and accuracy in order to support and replace existing device. If objected image could be linked to high speed process board with special interface and pre-processed using FPGA, it can be used in real time image processing and protocol of HIS(Hospital Information System). This study can support the basic circuit design of medical image board which is able to realize image processing basically using digitalized medical image, and to interface between existing device and image board containing image processing algorithm.

• 대한핵의학회:학술대회논문집
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• 대한핵의학회 1988년도 제27차 춘계학술대회
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• pp.119-122
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• 1988

• 대한간호학회지
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• 제39권4호
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• pp.539-548
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• 2009

Purpose: This study was designed to construct and test the structural equation model on sexual satisfaction in patients with a colostomy. Methods: The model construction was based upon Roy's adaptation model. Stoma-related discomfort (SRD), age, frequency of sexual intercourse, treatment modality, and gender affect sexual satisfaction and are mediated by physical, psychosocial, and interdependence modes. Each mode was conceptualized as sexual function, body image/ depression, and marital intimacy. The patients were 112 colostomates with colorectal cancer who were asked to complete a mail-back survey on their demographic data, SRD, body image, depression, marital intimacy, sexual function, and sexual satisfaction. Data were analyzed using SPSS WIN 15.0 and AMOS WIN 7.0. Results: Significant variables for sexual satisfaction in the final model were body image affected by SRD, depression affected by body image and SRD, marital intimacy affected by depression, and sexual function affected by marital intimacy. Conclusion: The results of this study suggest that specific guidelines for SRD are necessary to improve sexual satisfaction among colostomates. Nurses should be vigilant in monitoring depression and body image disturbance, and providing appropriate interventions to increase marital intimacy. Treatment modality, gender, and age should be considered in developing education programs pertaining to sexuality.