• Proceedings of the Korean Society of Computer Information Conference
• /
• 2020.07a
• /
• pp.443-444
• /
• 2020

본 논문에서는 여러 개의 측방 유동 스트립을 형광분석을 통한 정량분석을 할 수 있는 장비의 각 스트립에 인쇄된 바코드를 카메라를 이용하여 인식하는 방법을 제안한다. 제안한 알고리즘에서는 각 슬롯의 스트립 유무를 판단하고, 시작 비트의 위치를 템플릿 정합법으로 검출하여 바코드 영역을 찾는다. 각 비트 영역은 바코드 설계 데이터와 기기 교정 시 계산된 공간 해상도를 이용하여 결정된다. 각 비트의 값은 비트 영역 중앙 부분의 평균을 이용하여 결정하였다. 다양한 조명 아래에서 취득한 영상들로부터 스트립 유무 판단, 시작 비트 위치 탐색 성공 여부 및 각 비트 값을 결정 등을 위한 판정 값을 가우시안 모델을 이용하여 계산하였다. 실험 결과 모든 판정 오류는 무시할 만 하였다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2022.11a
• /
• pp.440-442
• /
• 2022

2017년 가치가 급상승하며 전 세계적으로 큰 이슈를 끈 비트코인은 최근 많은 사람들의 재태크 수단으로 이용되고 있다. 그러나 비트코인은 비슷한 재태크 수단인 주식과 다르게 24시간 내내 거래되고, 기사 하나하나에 의해 가격변동의 폭이 굉장히 크다. 이는 가격이 급변하는 비트코인 시장에서 가격을 예측하는데 어렵게 작용한다. 본 논문에서는 직접적인 가격 예측은 어렵다고 판단해 비트코인 가격변동에 영향을 주는 요소들을 딥러닝 모델을 통해 일일 단위 종가 가격의 등락을 예측해 위의 요소들이 비트코인 가격변동과 상관관계를 가지는지 확인한다.

• Korean journal of food and cookery science
• /
• v.26 no.4
• /
• pp.481-489
• /
• 2010

This study was conducted to identify the optimal mixing ratios of turmeric powder or beet powder for the production of jelly. To establish the amount of turmeric powder or beet powder that could be added to jelly, physicochemical sensory characteristics and textural properties were measured. Specifically, jellies were prepared using gelatin containing turmeric powder or beet powder at ratios of 0.5, 1, 1.5 and 2%(w/w). Sensory evaluation of color, appearance, sweetness, chewiness, springiness, hardness, transparency and overall acceptability of jelly prepared using 0.5% turmeric powder resulted in a high score. Similarly, the color, appearance, sweetness, chewiness, springiness, transparency and overall acceptability of jelly prepared using 1% beet powder received a high score. Taken together, the results of this study suggest that turmeric and beet can be useful in the production of high quality jelly.

• Journal of the Institute of Electronics Engineers of Korea SD
• /
• v.41 no.5
• /
• pp.153-160
• /
• 2004

In this paper, we propose an efficient bit loading algorithm for IEEE 802.11a wireless LAN systems. While a conventional bit loading algorithm uses the SNR value of each subcarrier, it is very difficult to estimate the exact SNR value in wireless LAN systems due to randomness of AWGN. Therefore, in order to solve this problem our proposed algorithm uses the channel frequency response instead of the SNR of each subcarrier. Through simulation results, we can obtain the performance gain of 3.5∼8㏈ at PER of 10-2 with the proposed bit loading algorithm while the conventional one obtains the performance gain of 0.5∼5㏈ at the same conditions. Also, the increased data rate can be confirmed 63Mbps. After the logic synthesis using 0.3${\mu}{\textrm}{m}$ CMOS technology, the logic gate count for the processor with proposed algorithm can be reduced by 34% in comparison with the conventional one.

• The KIPS Transactions:PartB
• /
• v.11B no.4
• /
• pp.411-420
• /
• 2004

We propose a novel still image compression system, which is superior in its function than the JPEG2000 system developed by David Taubman. The system shows 40 : 1 high compression ratio using $2\times2$ bitmatrix subblock coding. The $2\times2$ bitmatrix subblock is constructed in the bitplanes by organizing the bits into subblocks composing of $2\times2$matrices. The arithmetic coding performs the high compression by the bitmatrices in the subblock. The input of the system consists of a segmentation mode and a ROI(Region Of Interest) mode. In segmentation mode, the input image is segmented into a foreground consisting of letters and a background consisting of the remaining region. In ROI mode, the input image is represented by the region of interest window. The high compression ratio shows that the proposed system is competent among the JPEG2000 products currently in the market. This system also uses gray coding to improve the compression ratio.

• Journal of Digital Convergence
• /
• v.15 no.6
• /
• pp.457-466
• /
• 2017

The present study is to observe changes of health promoting behaviors of obese women by applying 8 weeks of motion-beat on rhythm exercise program. The effects of the obese women's motion-beat in rhythm exercise were summarized in the following conclusions: For changes in their health promoting behaviors, according to the application of motion-beat to the eight-week rhythm exercise, it was noted that the application of motion-beat was effective in the factor of stress management. Therefore, since the exercise applying motion-beat maximizes fun and interest, it has been developed as a program on sports for all, appropriate and efficient for obese women, and it is expected that positive changes in health promoting behaviors can be suggested as a measure for the facilitation of their continuous participation in the exercise.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.29 no.3B
• /
• pp.339-348
• /
• 2004

Packet classification is an important factor to support various services such as QoS guarantee and VPN for users in Internet. Packet classification is a searching process for best matching rule on rule tables by employing multi-field such as source address, protocol, and port number as well as destination address in If header. In this paper, we propose hardware based packet classification algorithm by employing tree bitmap of multi-bit trio. We divided prefixes of searching fields and rule into multi-bit stride, and perform a rule searching with multi-bit of fixed size. The proposed scheme can reduce the access times taking for rule search by employing indexing key in a fixed size of upper bits of rule prefixes. We also employ a marker prefixes in order to remove backtracking during searching a rule. In this paper, we generate two dimensional random rule set of source address and destination address using routing tables provided by IPMA Project, and compare its memory usages and performance.

• Journal of the Institute of Electronics Engineers of Korea TE
• /
• v.39 no.4
• /
• pp.395-402
• /
• 2002

In the conventional public switched telephone network(PSTN), there are various types of modulation that can be used in ADSL to offer fast data communication, two of which are CAP(Carrierless Amplitude Phase) and DMT(Discrete MultiTone). As we consider the current situation, DMT is getting more predominant in the market than CAP. One of the reasons is that it gives high performance in spite of its high complexity Since DMT divides the full range of bandwidth into 256 sub-channels, it can be highly adaptive in the circumstances, where the problems of attenuation and noise caused by the propagation distance are very crucial. In this paper, a new bit loading algorithm for DMT modulation is proposed. The proposed algorithm can be efficiently implemented in a way that it requires less computation than the conventional modulation techniques. In contrast to the conventional algorithms which perform sorting processing, the proposed algorithm uses look-up tables to reduce the repetition of calculation. Consequently, it is shown that less processing time and lower complexity can be achieved.

• Journal of Broadcast Engineering
• /
• v.13 no.6
• /
• pp.804-816
• /
• 2008

In this paper, we propose an adaptive rate control in frame-level for real-time H.264/AVC. For given QP, bits according to video characteristics, and current frame is close correlation between the adjacent frames. Using the statistical characteristic, we obtain change of occurrence bit about QP to apply the bit amount by QP from the video characteristic and applied in the estimated bit amount of the current frame. In addition, we use weight with QP and occurrence bit amount that is statistical information of encoded previous frames. Simulation results show that the proposed rate control scheme achieves time saving of more than 99% over JM 12.1 rate control algorithm. Nevertheless, PSNR and bit rate were almost same as the performances of JM.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.45 no.3
• /
• pp.93-102
• /
• 2008

In this paper, we propose a rate control algorithm for constant quality real time video coding. To achieve constant quality, previous algorithm exploit mean absolute of difference(MAD) as measure of frame complexity. However, if scene is abruptly changed or if quantization parameter is not constant, encoder produces various output bits with same MAD. Therefore we know that MAD does not appropriately reflect characteristic of frame. To solve this problem, we exploit model parameter as measure of frame complexity. Because model parameter means slope between output bits and MAD, it reflects correctly complexity of frame. And because previous model, R-MAD model, is not considered quantization parameter, as quantization parameter increases or decreases, model parameter of frame also vary. So model parameter obtained using previous model cannot reflect internal characteristic of video. We solve this problem using proposed model, which is considered quantization parameter. Experiment results show that our algorithm provide better performance, in terms of quality smoothness than previous algorithm. Especially, when scene is abruptly changed, our algorithm alleviates quality drop.