• 반도체디스플레이기술학회지
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• 제9권4호
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• pp.63-66
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• 2010

Detecting marker coordinates is important in augmented reality system based on tag. If a marker is not detected, objects can't be augmented. In this paper, we propose a noise reduction method for augmented reality. Using a blue color space to HIS color transformation was performed on the binary. Erosion operator and the dilation operator of the binary images were performed. Experimental results show that proposed method produces a tag image recognizable in various light environments. And using the area of the rectangle, the labeling could be detected through the tag. Tag recognition rate is improved by removing noise.

• Korean Journal of Mathematics
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• 제27권4호
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• pp.1109-1118
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• 2019

In this paper, we introduce the notion of residuated and Galois connections on adjoint triples and investigate their properties. Using the properties of residuated and Galois connections, we solve fuzzy relation equations and give their examples.

• 조명전기설비학회논문지
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• 제21권1호
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• pp.19-27
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• 2007

본 논문에서는 모폴로지 기법을 이용한 TFT-LCD 셀의 라인 결함과 픽셀 결함을 검사할 수 있는 알고리즘을 개발하였다. 이때 LCD 셀의 브라이트 라인 결함, 다크 라인 결함, 브라이트 픽셀 결함, 다크 픽셀 결함들을 검출하기 위하여, 셀의 크기 특성을 고려한 모폴로지 연산자의 모양을 결정하고, 팽창 연산, 침식 연산 및 차분 기법을 이용하여 결함 정보를 추출하였다. 이후 다양한 실험을 통하여 결정된 적절한 임계값을 이용한 최적의 이진화 알고리즘을 적용하였다. 마지막으로 결함정보의 인식을 위한 라벨링 과정을 통하여, 결함들을 검출하였다. TFT-LCD 판넬의 다양한 검사 실험을 통하여, 본 논문에서 제안하는 알고리즘의 결함정보 검출 성능이 매우 우수함을 확인하였다.

• 한국컴퓨터정보학회논문지
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• 제4권2호
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• pp.19-26
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• 1999

화상 처리 방법은 최근 다양한 기법을 적용하여 지도 정보 시스템 구축에 대한 요구가 급격히 대두되고 있다. 따라서 본 논문은 이러한 GIS(Geographic Information System) 시스템을 효율적으로 구축하기 위한 방안으로, 기존 지도 도형이나 수 작업에 의해 작성된 도면을 컴퓨터로 스케닝하여 각종 도로 정보 인식 추출하는 방법을 제안하였다. 이러한 화상 정보 인식 방안간으로 많은 알고리듬들이 제시되고 있지만, 실제로 그 활용 면에서, 인식 분석 처리 과정이 매우 복잡함으로 인하여 충분히 반영되지 못하고 있는 한계성을 가지고 있다. 따라서 본 논문은 지도 화상을 스케닝하여 도로 정보를 효율적으로 분리추출하기 위하여 $3{\times}3$ 방향성 구조요소, 즉 수리 형태학적 기법에서 Erosion과 Dilation 그리고 Opening과 Closing, 최적의 Structuring Element를 적용하여, 대상 화상인 지도에서 최적의 도로정보와 문자열간의 특징 분리 추출의 유효성을 검증하고자 한다.

• 전자공학회논문지B
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• 제33B권5호
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• pp.118-126
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• 1996

In object analysis by image processing, finding lines plays a universal role. And these lines can be easily found by detecting ridges and valleys in digital gray scale images. In this paper, a new method of detecting ridges and valleys by using local min/max operations was presented. This method detects ridges and valleys of desired width by using erosion and dilation properties of local min/max operations, and requires no information of ridge or valley direction. Therefore the method is efficient and computationally simple in comparision with the conventional analytical method.

• 전자공학회논문지B
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• 제32B권6호
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• pp.899-908
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• 1995

In this paper, the probabilistic relations of dual morphological operations, such as dilation and erosion, closing and opening, and close- open and open-close, and the statistical properties for a continuous stationary lst order Gauss-Markov source are analyzed. The result is that the dual filters have symmetrical means and skews, and equal variances. Also, the statistics of morphological filters are very similar with those of input source, as correlation coefficient increases.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 추계종합학술대회 논문집(4)
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• pp.45-48
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• 2000

In this paper, we propose a region-based segmentation algorithm to extract human face area using a window function and neural networks. Furthermore, we apply the erosion and dilation to remove small error areas. By applying the window function, it is possible to reduce error. In particular, false segmentation of the eye and the lip can be considerably reduced. Experiments show promising results and it is expected that the Proposed method can be applied to video conference and still image compression.

• 전자공학회논문지S
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• 제35S권1호
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• pp.96-104
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• 1998

A new gray-scale thinning algorithm using local min/max operations is proposed. In this method, erosion and dilation properties of local min/max operations are using for generating new rides and detecting ridges in gray scale image, and gray-scale skeletons are gradually obtained by accumulating the detected ridges. This method can be applicable to the unsegmented image in which object are not specified, and the obtained skeletons correspond to the ridges (high gray values) of an input image.

• 전자공학회논문지S
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• 제35S권4호
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• pp.96-104
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• 1998

In this paper, the circuit of DTCNN designed using dilation and erosion operation, a basic operation of gray-scale morphology, also each cell designed PE in order to having extension using the local connectivity. In this PE design, connection of between cell and cell become simple. And it is realized to easily VLSI realization as well as to circuit to be parallel processing. As the resutls of simulations, the proposed method was verified to improved more operation speed than the sequential data processing, parallel processing DTCNN was implemented in a 0.8.mu.m CMOS technology using COMPASS Tool.

• Journal of applied mathematics & informatics
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• 제13권1_2호
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• pp.393-404
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• 2003

In general, a differential operator can be used as a tool of treating the local properties of given function. However, when the given function is varied with high frequency and has irregular form with non-stationary evolution it may not act its role sufficiently as in case of nowhere differentiable curves. In this paper we introduce a multi-scale derivative as a form of weakened global derivative so that it may explain its semi global diffusion properties as well as local ones for the various irregular diffusion phenomena.