• 센서학회지
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• 제30권5호
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• pp.295-299
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• 2021

In this study, we present a complementary metal-oxide-semiconductor (CMOS) binary image sensor. It can shoot an object rotating at a high-speed by using a gate/body-tied (GBT) p-channel metal-oxide-semiconductor field-effect transistor (PMOSFET)-type photodetector. The GBT PMOSFET-type photodetector amplifies the photocurrent generated by light. Therefore, it is more sensitive than a standard N+/P-substrate photodetector. A binary operation is installed in a GBT PMOSFET-type photodetector with high-sensitivity characteristics, and the high-speed operation is verified by the output image. The binary operations circuit comprise a comparator and memory of 1- bit. Thus, the binary CMOS image sensor does not require an additional analog-to-digital converter. The binary CMOS image sensor is manufactured using a standard CMOS process, and its high- speed operation is verified experimentally.

• Bulletin of the Korean Chemical Society
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• 제28권3호
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• pp.391-396
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• 2007

The three-dimensional structure of an inorganic crystal, CaMoO4 (space group I 41/a, a = 5.198(69) A and c = 11.458(41) A), was determined by electron crystallography utilizing a high voltage electron microscope. An initial structure of CaMoO4 was determined with 3-D electron diffraction patterns. This structure was refined by crystallographic image processing of high resolution TEM images. X-ray crystallography of the same material was performed to evaluate the accuracy of the TEM structure determination. The cell parameters of CaMoO4 determined by electron crystallography coincide with the X-ray crystallography result to within 0.033-0.040 A, while the atomic coordinates were determined to within 0.072 A.

• 제어로봇시스템학회논문지
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• 제14권10호
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• pp.1047-1052
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• 2008

In this paper, we design an image-based robust controller to compensate uncertainties with image Jacobian and robot dynamics due to uncertain depth measurement and load variations. The proposed controller with eye-in-hand structure has separate terms to compensate each of uncertainties. The ultimate boundedness of the closed-loop system is proved by the Lyapunov approach. The performance of the proposed control system is demonstrated by simulation and experimental results a 5-link robot manipulator with two degree of freedom.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 추계학술대회
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• pp.737-739
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• 2015

본 연구의 목적은 소비자들이 IT 첨단제품을 구매함에 있어서 지각하는 브랜드의 인지도와 구매태도를 바탕으로 구매의사결정을 이론적 배경에 대한 검토를 바탕으로 가설을 설정하고 이들 가설을 검증하기 위하여 실증연구를 수행하였다. IT 제품에 있어서 브랜드의 인지도는 소비자들이 제품이나 서비스를 채용하는데 있어서 매우 중요한 전략적 접근방법이다. 소비자들의 IT 첨단제품을 구매하는데 있어 기업의 브랜드 강화전략을 도출하는 것이 기업의 경쟁력을 강화시키고 성공적인 시장진입에 대한 시사점임을 알 수 있다.

• 디지털산업정보학회논문지
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• 제8권3호
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• pp.41-48
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• 2012

In this paper, we propose a method of edge detection for noisy image. The proposed method uses a progressive filter for noise reduction and a Sobel operator for edge detection. The progressive filter combines a median filter and a modified rational filter. The proposed method for noise reduction adjusts rational filter direction according to an edge in the image which is obtained by median filtering. Our method effectively attenuates the noise while preserving the image details. Edge detection is performed by a Sobel operator. This operator can be implemented by integer operation and is therefore relatively fast. Our proposed method not only preserves edge, but also reduces noise in uniform region. Thus, edge detection is well performed. Our proposed method could improve results using further developed Sobel operator. Experimental results show that our proposed method has better edge detection with correct positions than those by existing median and rational filtering methods for noisy image.

• 한국산학기술학회논문지
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• 제15권6호
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• pp.3599-3608
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• 2014

본 논문은 사고유발기능을 중심으로 이미지의 인지적 기능에 대해 탐색적으로 고찰해보고자 하였다. 이미지의 사고유발기능이 실제 사례에서 구체적으로 어떻게 나타나는지를 알아보기 위해 꼴라쥬 미술작업을 실시하였다, 그 후 심층면접을 통해 이미지의 사고유발기능을 중심으로 이미지에 대한 연구 참여자들의 인지과정을 분석하였다. 그 결과 이미지는 대상에 주의를 기울여 더욱 면밀히 처리하도록 하고, 몰입을 증가시켜 사고를 유발하며 이를 통해 대화를 활성화하는 것으로 나타났다. 이미지의 인지적 기능에 대한 본 연구는 우리 인간 인지에 대한 이해의 폭을 확장하는데 기여할 것으로 기대되고, 특히 과학과 예술의 융합에도 유익한 통찰을 제공할 수 있을 것으로 기대된다.

• 한국식생활문화학회지
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• 제27권1호
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• pp.1-11
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• 2012

This study investigated the effects of a healthy image on the preference and intake frequency of meat and animal products. The study looked into beef, pork, chicken, sausage, mackerel, cutlass fish, croaker, tuna, squid, shrimp, clams, fish cakes, eggs, milk, yogurt, ice cream, and cheese. A total of 359 usable surveys given to elementary school students, college students, and adults were collected using a convenient sampling method. While milk had the healthiest image, sausage had the least healthy image. The respondents preferred yogurt the most and sausage the least. The intake frequency of eggs was the highest and clams the lowest. The healthy image, preference, and intake frequency for all studied foods showed significant differences across both gender and age. The relationship between healthy image and preference was significant for all foods, and a healthy image always had a positive influence on preference. The relationship of healthy image and intake frequency was significant in 14 foods except for mackerel, cutlass fish, and tuna. Also a healthy image created a positive effect on the intake frequency of 14 foods.

• 한국자기학회지
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• 제5권5호
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• pp.874-879
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• 1995

고 포화자속밀도를 갖는 Fe미세결정 박막의 자기특성 및 미세구조에 미치는 첨가원소의 영향을 조사하였다. Mo 첨가 박막의 경우, $Fe_{2}Mo$, $Fe_{4}N$, $Fe_{3-2}N$상의 생성으로 연자기 특성이 발현되지 않았다. Ta첨가 박막의 경우, 미세한 TaN, TaC 상이 석출하여 $\alpha$-Fe 결정립을 효과적으로 미세화 시켰으며 Fe 질화물의 생성도 억제되었다. 이에 따라 우수한 연자기 특성이 발현되었으며 FeTaN계 박막은 4000, FeTaC 박막은 2700의 높은 투자율을 나타내었다.

• 한국기계연구소 소보
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• 통권19호
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• pp.141-147
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• 1989

Using monochrome CCD camera with high speed electronic shutter. blade image is captured in the environment with vibration. The image is preprocessed using LoG filter and zero crossing. We used Hough transformation method to detect straight lines and obtained width between lines caused by grinders. This paper proposes automatic blade measuring method to automate the process control of blade grinding.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.687-688
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• 2006

This paper presents implementation of the lifting based DWT processor interface which the process of JPEG2000. The proposed architecture uses Excalibur device produced Altera. This study describes CIS(CMOS Image Sensor), DMA(Direct Memory Access) and DWT control logic