http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Content-Based Image Retrieval Using Adaptive Color Histogram
Yoo Gi-Hyoung,Park Jung-Man,You Kang-Soo,Yoo Seung-Sun,Kwak Hoon-Sung The Korea Institute of Information and Commucation 2005 韓國通信學會論文誌 Vol.30 No.9C
From the 90's, the image information retrieval methods have been on progress. As good examples of the methods, Conventional histogram method and merged-color histogram method were introduced. Dey could get good result in image retrieval. However, Conventional histogram method has disadvantages if the histogram is shifted as a result of intensity change. Merged-color histogram, also, causes more process so, it needs more time to retrieve images. In this paper, we propose an improved new method using Adaptive Color Histogram(ACH) in image retrieval. The proposed method has been tested and verified through a number of simulations using hundreds of images in a database. The simulation results have quickly yielded the highly accurate candidate images in comparison to other retrieval methods. We show that ACH's can give superior results to color histograms for image retrieval.
인체동작분석시 Wavelet변환을 이용한 영상자료의 보간 및 분석
김기형,김민기,유경석,김희영 한국운동역학회 1997 한국운동역학회지 Vol.7 No.1
Inputting data of human motion analysis means signal processing of changes in linear time dependent spatial coordinates of anatomical landmarks. Commercial CCD camera appears to be sampling 30 fps imposing limitation for human motion analysis which needs at least 60 fps. For the interpolation 60 fps fast algorithm of inverse wavelet transformation (IWT) was utilized producing 60 fps out of normal 30 fps. The original data from free fall and cycling motion of lower extremity were used to test the applicabiility of wavelet interpolation to human motion analysis. The test results showed linear relationship between two data sets. In the test of free fall, data curves of two sets, theoretical 30 frame data and 60 frame data after inverse wavelet transformation, appeared to be almost identical. Regression analysis of free fall test showed R^2 = 0.99 meaning Y = IWT. In the test with cycling motion of lower extremity % cycle of maximum flexion and extension at the joints was compared between two data sets showing same result, as in free fall test.
Kim, Si Hyoung,Kang, Jun Goo,Kim, Chul Sik,Ihm, Sung-Hee,Choi, Moon Gi,Yoo, Hyung Joon,Lee, Seong Jin SAGE Publications 2017 TUMOR BIOLOGY Vol.39 No.5
<P>The influence of celastrol alone or in combination with paclitaxel on survival of anaplastic thyroid carcinoma cells was investigated. In 8505C and SW1736 cells, after treatment of celastrol, cell viability decreased, and cytotoxic activity increased. The protein levels of heat shock protein (hsp) 90, hsp70, Bax, death receptor 5, cleaved caspase-3, cleaved poly (ADP-ribose) polymerase, phospho-extracellular signal-regulated kinase 1/2 (ERK1/2), and phospho-c-Jun N-terminal kinase (JNK) were elevated, and those of Bcl2, phospho-nuclear factor-kappaB (NF-B), and total and phospho-Akt were reduced. The endoplasmic reticulum stress markers expression and reactive oxygen species production were enhanced. In celastrol-treated cells, N-acetylcysteine increased cell viability and phospho-NF-B protein levels, and decreased reactive oxygen species production and cytotoxic activity. The protein levels of cyclooxygenase 2, phospho-ERK1/2, phospho-JNK and Bip were diminished. After treatment of both celastrol and paclitaxel, compared with paclitaxel alone, cell viability and the percentage of viable cells were reduced, and death rate and cytotoxic activity were elevated. The protein levels of phospho-ERK1/2, phospho-JNK, Bip, and cyclooxygenase 2, and reactive oxygen species production were enhanced. All of the Combination Index values calculated by Chou-Talalay equation were lower than 1.0, implying the synergism between celastrol and paclitaxel in induction of cell death. In conclusion, our results suggest that celastrol induces cytotoxicity through involvement of Bcl2 family proteins and death receptor, and modulation of phospho-NF-B, Akt, and mitogen-activated protein kinase in association with endoplasmic reticulum stress and reactive oxygen species production in anaplastic thyroid carcinoma cells. Moreover, celastrol synergizes with paclitaxel in induction of cytotoxicity in anaplastic thyroid carcinoma cells.</P>