• Journal of the Institute of Convergence Signal Processing
• /
• v.12 no.1
• /
• pp.7-12
• /
• 2011

In this paper, we propose the technique detecting interest object region effectively in the images from periscope of submarine based on self-generated template. First, we extract the sea-sky line, and divide it into sky and sea area from background region based on the sea-sky line. In each divided background region, the blocks which can be represented in each background region are set as a reference template. After dividing an image into several same size of blocks, we apply multi template matching to the divided search blocks and histogram template to divide the image into object region and background region. Proposed algorithm is adapted to various images in which objects exist in the background of sea and sky. We verified that proposed algorithm performed properly without given informmed prby prior learning.ropso, regardless of the slope of sea-sky line and the locmed p of object based on sea-sky line, we verified that the objects region was segmented effectively from the input image.

• 주택과사람들
• /
• s.192
• /
• pp.106-109
• /
• 2006

그녀와 그, 해변에 있다면 바다의 수평선을 바라볼 것이고, 계곡에 있다면 자연의 풍요를 바라볼 것이다. 허니무너에게 따사로운 햇살과 살랑살랑 부는 바람, 그리고 결혼식을 준비하느라 쌓인 피로를 한번에 풀어줄 스파 서비스를 선사할 리조트 세 곳.

• 주택과사람들
• /
• s.205
• /
• pp.88-89
• /
• 2007

도시의 얼굴을 만드는 건축가 민성진. 기존의 형태를 탈피하지 못하고 구태의연하게 모방한 것이라면 이미 죽은 건축물이나 다름없다고 당당히 말하는 그는 모험과 실험 정신으로 늘 새로운 것을 시도한다. 건축가 민성진을 그가 디자인한 압구정동 SDA 건물 3층의 SKM 사무실에서 만났다.

• Korean Journal of Cognitive Science
• /
• v.2 no.2
• /
• pp.221-259
• /
• 1990

Four experiments explored how the size ratio of two letter patterns affects jundgment times in a same-different matching task.Size, continuity of strokes,positions of the two vowel letters were systematically varied in order to test predictions,derved from the following hypotheses:Analogue transformation,position,use of diagnostic information,and decision sriteria.Size ratio influenced only reaction times for same responses and,more importantly,changes in the length of a horizintal line in a letter affected same responses more than the other feature.Taken together,the present experiments provide support for the diagnostic information hypothesis, while casting in doubt the other hypotheses on the nature of size transformations.

• Journal of the Institute of Electronics and Information Engineers
• /
• v.50 no.5
• /
• pp.224-230
• /
• 2013

Lane boundary detection plays a key role in the driver assistance system. This study proposes a robust method for detecting lane boundary in severe environment. First, a horizontal line detects form the original image using improved Vertical Mean Distribution Method (iVMD) and the sub-region image which is under the horizontal line, is determined. Second, we extract the lane marking from the sub-region image using Canny edge detector. Finally, K-means clustering algorithm classifi left and right lane cluster under variant illumination, cracked road, complex lane marking and passing traffic. Experimental results show that the proposed method satisfie the real-time and efficient requirement of the intelligent transportation system.

• The Journal of the Acoustical Society of Korea
• /
• v.25 no.7
• /
• pp.346-355
• /
• 2006

Acoustic data from a shallow water experiment in the East Sea of Korea (MAPLE IV) is Processed to investigate the Performance of matched-field geo-acoustic inversion and source localization. The receiver array consists of two legs as in an L-shape. one vertical and the other horizontal lying on the seabed. Narrowband multi-tone CW source was towed along a slightly inclined bathymetry track. The matched-field geo-acoustic inversion includes comparisons between three processing techniques. all based on the Bartlett processor as; (1) the coherent processing of the data from the full array, (2) the incoherent Product of each output from both the horizontal and vertical arrays, and (3) the cross correlation between the horizontal and vertical arrays. as well as processing each array leg separately. To verify the inversion results. matched-field source localization for low level source signal components were performed using the same Processors used at the inversion stage.

• The Journal of the Acoustical Society of Korea
• /
• v.43 no.1
• /
• pp.29-38
• /
• 2024

The Matched Field Processing (MFP) is an estimation method for a source range and depth based on the prediction of sound propagation. However, as the frequency increases, the prediction inaccuracy of sound propagation increases, making it difficult to estimate the source position. Recently proposed, the Frequency-Difference Matched Field Processing (FD-MFP) is known to be robust even if there is a mismatch by applying a frequency-difference autoproduct extracted from the auto-correlation of a high frequency signal. In this paper, in order to evaluate the performance of the FD-MFP using a horizontal line array, simulations were conducted in the environment of the East Sea of Korea. In the area of Bottom Bounce (BB) and Convergence Zone (CZ) where detection of a sound source is possible at a long range, and the results of localization were analyzed. According to the the FD-MFP simulations of horizontal line array, the accuracy of localization is similar or degraded compared to the conventional MFP due to diffracted field and mismatch of sound speed. There was no clear result from the simulations conforming that the FD-MFP was more robust to mismatch than the conventional MFP.

• Proceedings of the Optical Society of Korea Conference
• /
• 2000.02a
• /
• pp.38-39
• /
• 2000

마치 살아있는 것처럼 움직이는 영상을 보고자 하는 인류의 욕구가 19세기에 다양한 광학 기구들을 낳게 했는데, 이 중의 하나가 영화이다. 이러한 필름을 기초로 한 투사기술은 그러한 인간의 욕구를 작게나마 해소시켰지만, 수평선 저 너머에서 일어나는 일을 동시에 눈으로 보고 싶어하는 꿈을 실현시켜 주진 못했다. 하지만 이러한 생방송을 할 수 없는 필름기술의 한계는 CRT라고 하는 전자 투사 디스플레이(electronic projection display)의 도움으로 극복되었다. (중략)

• The Transactions of the Korea Information Processing Society
• /
• v.3 no.5
• /
• pp.1147-1159
• /
• 1996

In this paper. we develop an efficient algorithm which vectorize the table input for mixed document recognition system. It is necessary to separate character and line for recognizing the character in the table. For recognizing table, we have to recognize the character which is blocked by table line and develop the efficient rectorization method for table line. For vectorizing table, we develop several methods. The first method is to extract table line part using 8-dircction chaincodes. The second method is to extract horizontal and vertical lines using histogram of lines. The third one is to extract diagonal lines of table by using the cross points of horizontal and verticallines. Finally we also develop the table vectorization method which finds the regularity characteristics of horizontal and vertical lines composing table, In the paper, we sugest a regularity method for efficient table vectorization.

• 한국HCI학회:학술대회논문집
• /
• 2006.02a
• /
• pp.506-512
• /
• 2006

시각적인 정보전달이 어려운 상황에서의 대상인식, 혹은 시각장애인의 대상인식에 있어서 소리는 어느 정도의 역할을 할 수 있을까? 이 연구는 소리를 통해 대상의 형태정보를 전달하기 위해 진행되었다. 하나의 음(musical tone)을 음높이와 음색, 지속시간을 조정한 후, 머리전달함수(Head-Related Transfer Function: HRTF)를 이용하여 수평선, 수직선, 대각선, 곡선의 형태로 운동하는 3-D 사운드 형태소로 만들었다. 그리고 이들의 연속적인 조합을 통해 단순한 도형에서부터 복잡한 도형, 이들 2차원상의 도형을 단면으로 하는 3차원상의 도형들까지 그려내는 소리자극을 구성하였다. 성인 대학생을 대상으로 한 실험에서, 이렇게 만들어진 청각이미지(auditory image)를 듣고 표상된 형태를 여러 개의 시각적인 이미지들(visual images) 중에서 선택하는 과제를 실시하였는데, 실험 결과는 평균 78%의 정확율을 보였다. 이는 소리를 이용한 형태정보 전달의 가능성이 있음을 시사하는 것이며, 이러한 시도는 청각 인터페이스의 응용범위를 확장하는데 도움이 될 것이다.