• Journal of Korea Multimedia Society
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• v.16 no.4
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• pp.444-452
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• 2013

Operation time of a function or procedure is a thing that always needs to be optimized. Parallelizing the operation is the general method to reduce the operation time of the function. One of the most powerful parallelizing methods is using GPU. In image processing field, one of the most commonly used operations is morphology operation. Three types of morphology operations kernel, na$\ddot{i}$ve, global and shared, are presented in this paper. All kernels are made using CUDA and work parallel on GPU. Four morphology operations (erosion, dilation, opening, and closing) using square structuring element are tested on MRI images with different size to measure the speedup of the GPU implementation over CPU implementation. The results show that the speedup of dilation is similar for all kernels. However, on erosion, opening, and closing, shared kernel works faster than other kernels.

• Clinical and Experimental Reproductive Medicine
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• v.22 no.3
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• pp.293-299
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• 1995

Objective: To investigate the effects of sperm morphology and their co-incubation with oocytes on the outcome of IVF and ICSI. Design: Strict morphology of washed sperm was assessed by Diff-Quick staining method before or after insemination. And the relationships between strict morphology and outcome (fertilization, embryo development and pregnancy) of IVF(with co-incubation) and ICSI (without co-incubation) were determined. Patients: Two-hundreds-and-sixty-three cycles of IVF and ninety-six cycles of ICSI were analyzed in order to clarify the influence of strict sperm morphology of spermatozoa on outcome of IVF and ICSI. These were divided into four groups. according to fertilization method and sperm morphology(Group 1: IVF, ${\geq}$12%, n:227; Group 2: IVF, <12%, n:36; Group 3: ICSI, ${\geq}$ 12%, n=48; Group 4: ICSI, <12%, n=48). Results: The fertilization rates of better morphology groups were higher than those of poor groups: Group 1(68.1%) > Group 2(62.1%), Group 3(78.1%) > Group 4(71.5%). There was no difference in embryo cleavage rates among four groups (>90%), Regarded with the good embryo rates, Group 1(56.8%) was significantly higher than Group 2(42.3%)(P<0.01), but there was no difference between Group 3(64.7%) and Group 4(61.2%). The pregnancy rates were also higher in better morphology groups as well as fertilization rates: Group 1(34.8%)> Group 2(16.7%)(p<0.05), Group 3(40.0%) > Group 4(23.0%)(p=0.08). Conclusion: Co-incubation with poor morphology sperm might adversely affect the quality of embryos. And strict sperm morphology may represent the ability to establish successful pregnancy. In short, the strict sperm morphology can be a good predictor of IVF and ICSI outcome.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2003.09a
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• pp.702-705
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• 2003

Directed graph and Lindenmayer system (L-system) are two major encoding methods of representation to develop creatures in an application field of artificial life. It is difficult to structurally define real morphology using the L-systems which are a grammatical rewriting system because they represent genotype as loops, procedure calls, variables, and parameters. This paper defines a class of representations called structured directed graph and interactive genetic algorithm for automatically creating 3D flower morphology. The experimental results show that natural flower morphology can be created by the proposed method.

• Proceedings of the KIEE Conference
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• 2005.11a
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• pp.136-138
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• 2005

Merocyanine dye (MD) has been extensively investigated due to its marked potential application to photo-electric devices. We fabricated the number of layers to control its optical characteristics using the Langmuir-Blodgett (LB) method. We evaluated the morphology and optical characteristics of MD LB films using Atomic Force Microscopy (AFM) and UV spectroscopy, PL spectroscopy. As a result, we obtained the quantitative morphology and optical characteristics of LB films from controlling the deposided layers.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2002.05a
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• pp.33-33
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• 2002

• Journal of Korea Water Resources Association
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• v.45 no.9
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• pp.943-957
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• 2012

In this study, a technique based on Fractal Theory with Erosion Model was developed to interpolate the river morphology data at the border area between river bed and river side where both surface and under water surveyings can not be committed easily. Three dimensional river morphology data along the Ara River was generated by the developed technique. The Ara River is an artificially constructed waterway for vessels between the Han River and West Sea of Korea. The result was compared with the survey data by RMSE of 0.384, while the IDW interpolation result has RMSE of 0.802. Consequently, the developed river morphology data interpolation technique using Erosion Model based Fractal Theory is conceived to be superior to the IDW which has been generally used in generating the river morphology data.

• Korean Journal of Remote Sensing
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• v.33 no.6_1
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• pp.1019-1027
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• 2017

As high resolution satellite images can be used, numerous studies have been carried out for exploiting these images in various fields. This paper proposes horse hoof shaped object detection method based on mathematical morphology to extract interesting targets. Interesting targets have conceptually similar shapes such as a horse hoof, not having exact size or shape. Detection of an object with the similar shapes is possible by applying mathematical morphology processes. The proposed method allows an automatic object detection system to detect the meaningful object in a large satellite image rapidly. The mathematical morphology process can be applied to binary images, and thus this method is very simple. Therefore, this method can easily extract a "horse hoof shaped object" from any image that has indistinct edges of the interesting object and different image qualities depending on the filming location, filming time, and filming environment. Using the proposed method by which a "horse hoof shaped object" can be rapidly extracted, the performance of the automatic object detection system can be improved.

• Journal of the Korean Ceramic Society
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• v.26 no.5
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• pp.661-669
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• 1989

The defect structure in LiNbO3 single crystals grown by Czochralski method from the congruently melting composition were investigated. Chemical etching patterns were studied in x-plane, z-plane, and major cleavage plane, respectively, dislocation density was higher at the periphery of crystals than at the center because the thermal stress due to radial temperature gradient had a main effect on it, as compared with dislocations formed from the solid-liquid interface. Many dislocation lineages were arranged along several directions.

• Proceedings of the Korean Vacuum Society Conference
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• 2012.02a
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• pp.419-419
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• 2012

We fabricated the Polyamide 4,6 (PA46) thin film using Adipoyl chloride and 1,4-butadiamine. PA46 film was grown at $70^{\circ}C$ by Molecular Layer Deposition (MLD) method. MLD is sequential and self-terminating fabrication method for organic thin film. The growth rate of PA46 is $3.5{\acute{\AA}}$ cycle. The thickness of PA46 film was measured by Ellipsometer. Surface morphology of this film was investigated by Atomic Force Microscopy (AFM) and roughness is directly proportional to number of growing cycles.

• Proceedings of the Korean Society For Composite Materials Conference
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• 2001.05a
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• pp.118-121
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• 2001

The investigation of cure kinetics and morphology studies on DGEBA/PEI/Anhydride system were performed by differential scanning calorimetry and scanning electron microscopy. Autocatalystic kinetics model was applied by isothermal scan test. Ozawa method and Kissinger method was applied by temperature scan. Activation energy was 95kJ/mol for neat DGEBA/NMA, 120kJ/mol for DGEBA/PEI(10p.h.r.)/NMA. The generation of secondary phase of PEI was observed and its size was grown up by increasing contents of PEI.