• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.8
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• pp.3965-3983
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• 2017

We propose a novel eye tracking method that can estimate 3D world coordinates using an infrared (IR) stereo camera for indoor and outdoor environments. This method first detects dark evidences such as eyes, eyebrows and mouths by fast multi-level thresholding. Among these evidences, eye pair evidences are detected by evidential reasoning and geometrical rules. For robust accuracy, two classifiers based on multiple layer perceptron (MLP) using gradient local binary patterns (GLBPs) verify whether the detected evidences are real eye pairs or not. Finally, the 3D world coordinates of detected eyes are calculated by region-based stereo matching. Compared with other eye detection methods, the proposed method can detect the eyes of people wearing sunglasses due to the use of the IR spectrum. Especially, when people are in dark environments such as driving at nighttime, driving in an indoor carpark, or passing through a tunnel, human eyes can be robustly detected because we use active IR illuminators. In the experimental results, it is shown that the proposed method can detect eye pairs with high performance in real-time under variable illumination conditions. Therefore, the proposed method can contribute to human-computer interactions (HCIs) and intelligent transportation systems (ITSs) applications such as gaze tracking, windshield head-up display and drowsiness detection.

• Journal of Fashion Business
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• v.4 no.1
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• pp.33-44
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• 2000

The purpose of this study is to research Miao ethnic costume which have been distinctly expressed differences according tribes and areas, present fashion design reflecting image of Miao ethnic costume. Two steps was taken in order to achive this purpose. The first step was to put in order formative characteristics of Miao ethnic costume being based on the Chinese books and domestic research materials. The second step was to study formative characteristics of Miao ethnic costume in comparison 2000A/W fashion trend, illustrate and schematize fashion designs. The results of formative characteristics of Miao ethnic costume are summarized as follows 1. X or H silhouette through skirt & jacket and pants & jacket. 2. Layered look that been twisted around several items. 3. Fine pleats skirts. 4. Refined and splendid color. Black was used main color, dark blue & red purple were used coordi color, vivid color were used accent color 5. Geometrical pattern, cross stitch embroidery. 6. Various ornaments being used silver. 7. Various hair styles and hairdressers. Using above characteristics, this study presneted fusion fashion design combined images of ethnic and techno with dark blue, mustard, blue purple. The target was Forties, professional woman.

• Korean Journal of Plant Resources
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• v.13 no.3
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• pp.202-207
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• 2000

This study was conducted to investigate the characteristics of seed germination pattern by the prechilling and alternating temperature treatments to 16 species of native plant. The seed length, width and thickness ranged from 1.1 to 8.9 mm, from 0.7 to 7.5 mm and from 0.4 to 1.7 mm, respectively. In addition, the 1,000 grain weight of native plants ranged from 0.1 to 8.8g. Germination rate of Melandryum firmum R. and Saussurea pulchella F. with light condition, Capsella bursa-pastoris L. and Leonurus sibiricus L. with dark conditionin of non-treatment were the highest 69, 81,16 and 36%, respectively. Germination rate of Aster scaber T., Cirsium setidens N., Ligularia fischeri T., Plantago asiatica L., and Saussurea sp. of 5$^{\circ}C$ prechilling for 30 days were the highest 84, 29, 29, 57, 78 and 95% with light condition respectively, 30% but Cirsium nipponicum M. only with dark condition. Germination rate of Aralia elata S., Aster koraiensis N. and Synurus deltoides N. of alternating temperature with 8 hours at 3$0^{\circ}C$ and 16 hours at 15$^{\circ}C$ were the highest 2 and 57% with light condition and 52% with dark condition.

• Investigative Magnetic Resonance Imaging
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• v.5 no.1
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• pp.38-42
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• 2001

Dark band artifacts are often observed in angiograms of arteries obtained by 2D time-of-flight (TOF) angiography with saturation of veins by presaturation RF pulses. At some arteries the arterial blood velocity varies in a triphasic pattern during a cardiac cycle. The arterial blood, that is saturated by presaturation RF pulses in the saturation band, can flow back into the imaging slice during the retrograde flow phase of the triphasic variation. When such saturated retrograde flow occurs during the acquisition of the central part of the K space, a signal void can result in base images and consequently dark band artifacts can appear in angiograms. This phenomenon is experimentally demonstrated by varying the gap between the imaging slice and the saturation band. Furthermore, a new pulse sequence is proposed to eliminate the dark band artifacts by changing the profile of the saturation band front a rectangle to a ramp.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.5 s.142
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• pp.680-691
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• 2005

The purpose of this study was to investigate the change of color preference of young women living in Seoul, to provide materials which is useful for setting up the color plan for a better costume, and to suggest new information in the apparel study. This study was done on the basis of color preference only by regional characteristics and the range of this study restricted on young women' clothes. The subjects were 1,100 in 1998, 1,393 young women in 2004. They were photographed in the street. The data were analyzed by frequency, percentage and $\chi^2-test$. The results of this study was as follows; The preference of chromatic color and achromatic color, hue and tone, pattern of textiles are different mainly by regional characteristics. 1) In 1998, young women prefered achromatic colors to chromatic colors. and the most preferred achromatic color was black, especially women of YOUNGDUOPO area prefer black. But, in 2004, young women preferred chromatic colors to achromatic colors and the most preferred achromatic color was white in the all areas. 2) Analysis of hue shows that in 1998, blue is most preferred color in the all areas by young women. But, in 2004, the most preferred color was different depending on the areas 3) Analysis of tone shows that in 1998, vivid, pale, dark tones are commonly preferred by young women. However, APGUJUNG area have specially inclination, they prefer vivid, pale and light tone. In 2004 year, pale, vivid and bright tones are most preferred tones in the all areas. 4) Analysis of pattern of textiles shows that, pattern textiles were preferred by young women of APGUJUNGDONG area in 1998 and YOUNGDUOPO area in 2004. The most preferred. pattern for young women in all area was a stripe pattern.

• The KIPS Transactions:PartB
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• v.9B no.3
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• pp.369-374
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• 2002

In this paper, we propose the react-time car license plate recognition algorithm using intensity variation and geometric pattern vector. Generally, difference of car license plate region between character and background is more noticeable than other regions. And also, car license plate region usually shows high density values as well as constant intensity variations. Based on these characteristics, we first extract car license plate region using intensity variations. Secondly, lightness compensation process is performed on the considerably dark and brightness input images to acquire constant extraction efficiency. In the proposed recognition step, we first pre-process noise reduction and thinning steps. And also, we use geometric pattern vector to extract features which independent on the size, translation, and rotation of input values. In the experimental results, the proposed method shows better computation times than conventional circular pattern vector and better extraction results regardless of irregular environment lighting conditions as well as noise, size, and location of plate.

• KIPS Transactions on Software and Data Engineering
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• v.7 no.9
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• pp.345-350
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• 2018

This study is an algorithm for detecting vein pattern features important for finger vein recognition. The feature detection algorithm is important because it greatly affects recognition results in pattern recognition. The recognition rate is degraded because the reference is changed according to the finger position change. In addition, the image obtained by irradiating the finger with infrared light is difficult to separate the image background and the blood vessel pattern, and the detection time is increased because the image preprocessing process is performed. For this purpose, the presented algorithm can be performed without image preprocessing, and the detection time can be reduced. SWDA (Down Slope Trace Waveform) algorithm is applied to the finger vein images to detect the fingertip position and vein pattern. Because of the low infrared transmittance, relatively dark vein images can be detected with minimal detection error. In addition, the fingertip position can be used as a reference in the classification stage to compensate the decrease in the recognition rate. If we apply algorithms proposed to various recognition fields such as palm and wrist, it is expected that it will contribute to improvement of biometric feature detection accuracy and reduction of recognition performance time.

• Korean journal of applied entomology
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• v.37 no.2
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• pp.163-170
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• 1998

Larval morphological characters such as body color and stripe pattern were analyzed to get morphological genetic markers of beet armyworm, Spodoptera exigua (Hiibner). Body color was varied from light green to dark brown with diets. Stripe characters were classified by the presence of dorsal and lateral lines: three stripes with both lines, one stripe with dorsal line only, and zero stripe. Proportions of each stripe character increased with successive selections for its own character. Three stripe was dominant to one stripe when they were crossed. The estimated heritability in narrow sense (h2) of the stripe pattern was 0.50k0.42. About two fold more females than males were produced in zero stripe line. Stripe pattern was not significantly changed by different diets except in welsh onion which had lower proportion of three stripe individuals than that of the expected. Larval stripe pattern was also correlated with larval and pupal developmental rates and cold hardiness but not with insecticide susceptibility.

• Journal of Aquaculture
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• v.18 no.3
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• pp.147-153
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• 2005

The objective of this study is to elucidate the growth pattern of dark-banded rockfish, Sebastes inermis Cuvier, produced by aquaculture in Korea. Larvae from 250 maternal full-sibs were reared until 1,350 days after parturition. During the rearing period, growth equations on days after parturition (X) to the total length (TL) and body weight (BW) were estimated as TL=0.0217X $(r^2=0.8867)$ and $BW=0.0001X^2+0.0713X\;(r^2=0.9858)$, respectively. The relationship between BW and TL was $BW=0.0072TL^{3.4373}\;(r^2=0.9945)$. An increases in the eye diameter (ED) of dark-banded rockfish larvae on days after parturition (X) could be expressed as $ED=-2E-5X^2+0.0326X\;(r^2=0.9886)$. Relative growth equations on TL to head length (HL), snout length (SL), ED and postorbital head length (PHL) were calculated as $HL=0.2652TL\;(r^2=0.9758),\;SL=0.0613TL\;(r^2=0.9602),\;ED=0.0752TL\;(r^2=0.9715)$ and $PHL=0.2652TL\;(r^2=0.9501)$, respectively. Since there were few reports on the long-term growth experiment of this species due to difficulties in rearing techniques, results of this study would give a useful information to the biology and commercial culture techniques of dark-banded rockfish.

• Ocean and Polar Research
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• v.31 no.3
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• pp.231-238
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• 2009

A study was carried out to investigate the effect of water temperature on daily pattern and rate of total ammonia nitrogen (TAN) excretion in juvenile dark-banded rockfish Sebastes inermis (mean body weight: $14.8{\pm}0.3g$) under fasting and feeding conditions. Fish were acclimated over 10 days under three different water temperatures (15, 20 and $25^{\circ}C$). After 72 hours of starvation, fasting TAN excretion was measured at each temperature. To investigate post-prandial TAN excretion, fish were hand-fed with a commercial diet containing 47.7% crude protein for 7 days, two times daily at 09:00 and 17:00 hr. Water was sampled from both the inlet and outlet of each chamber every 2 hrs over a 24 hr period. Both fasting and post-prandial TAN excretion increased with increase in water temperature (P<0.05). Mean fasting TAN excretion rates at 15, 20 and $25^{\circ}C$ were 8.1, 9.0 and 9.2 mg TAN kg $fish^{-1}h^{-1}$, respectively. The value of $15^{\circ}C$ was lower than those of 20 and $25^{\circ}C$ (P<0.05), but there was no significant difference between $20^{\circ}C$ and $25^{\circ}C$ (P>0.05). Mean post-prandial TAN excretion rates at 15, 20 and $25^{\circ}C$ were 20.1, 22.9 and 23.4 mg TAN kg $fish^{-1}h^{-1}$, respectively. A peak post-prandial TAN excretion rate occurred after 12 hrs from the first feeding at $15^{\circ}C$ (mean 28.7 mg TAN kg $fish^{-1}h^{-1}$), $20^{\circ}C$ (33.7 mg TAN kg $fish^{-1}h{-1}$) and $25^{\circ}C$ (36.8 mg TAN kg $fish^{-1}h{-1}$), respectively. The TAN loss for ingested nitrogen at $15^{\circ}C$ (36.2%) was lower than that of $20^{\circ}C$ (40.8%) and $25^{\circ}C$ (41.7%). Based on overall results, water temperature exerts a profound influence on the nitrogen metabolism of juvenile dark-banded rockfish.