• 전자공학회논문지
• /
• 제49권11호
• /
• pp.205-210
• /
• 2012

본 논문에서는 RED 파라미터를 조정하여 차등화 서비스의 서비스 품질 관리의 성능을 고찰한다. 차등화 서비스는 CIR 혹은 PIR 같은 QoS 파라미터를 이용하여 특정 트래픽의 패킷들을 구분한다. 구분된 패킷을 표시하기 위해 코드 포인트가 사용되며 각각의 가상 큐에 입력된다. 코드 포인트에 따라서 각 가상 큐에는 다른 RED 파라미터 값들이 적용된다. 코드 포인트 값이 커질수록 엄격한 RED 파라미터 값들이 할당된다. RED 파라미터를 조정하여 서비스 품질을 관리 할 수 있음을 보이기 위해 본 논문은 간단한 2 색 표식을 갖는 타임 슬라이딩 윈도우의 정책 모델을 사용하였다. NS-2를 이용한 실험 결과, RED 파라미터를 조정하여 차등화 서비스의 서비스 품질이 효과적으로 관리됨을 확인하였다.

• 보건행정학회지
• /
• 제11권1호
• /
• pp.37-61
• /
• 2001

In the course of this research, we developed FRIS(Food Replica Information System), which calculates calories and nutrient values of foods in a very simple and interesting manner, and experienced of application to some communities. We expect that individuals will have opportunities to raise their consciousness of food, nutrients, and healthy living by participating in FRIS. 154 kinds of commonly consumed Korean foods were selected and one serving sized food replicas, having the same shapes, size, and color as the real foods, were constructed with attached bar code labels. An application program with food replicas and bar code was also developed in order to provide information on calories and nutrient values for people's meals or selected foods based on survey results of housewives' requirements related to foods and nutrients. FRIS should be a basic tool in nutrition education and consultation. Its applicability would vary according to the nutritionist's flexibility and contents of developed application programs. Technical stability should be strengthened and more useful contents of application prograln be added to spread the use of the system. Additionally, in future research, more delicate models should be developed and an analytical method should be applied to examine the effects of FRIS to individual behavioral changes in their eating habits.

• 복식
• /
• 제56권8호
• /
• pp.83-94
• /
• 2006

In this era of ubiquitous service, a computing device has functions similar with human beings. It influences all major fields of human life, such as clothing, dieting and housing. In order to use the coordination functions of the magic mirror, which might be a basic part of clothing in the era of ubiquitous service, this study concentrates on product information that should be inputted in RFID chip in detail in order to exercise virtual fashion coordination. Information should be inputted in RFID chip to use magic mirror for fashion coordination, a direction for doing this was also suggested. After coding the suggested clothing items, virtual fashion coordination was implemented as a fashion illustration. This study is as following, First, sorts standard code for suitable coordination in 4 images and presented to a proof. Code denoted by 10 characters. Each code literal special quality marks by two characters and divided by season, image, fabric, item, rotor, five items. Item middle of characters of 10 code, when agree on article more than 8, coordination is enabled. Secondely, It is presented by coordination to dressing action picture by suitable coordination classified apart in whole occasions, and coordination method by wearer inclination is remembered wearer's dressing action picture to Magic mirror including layered look. Thirdly, wardrobe of Magic mirror clothes that always buy newly in magic mirror, is washing and clothes that do not take to wardrobe did to be controlled. Fourth, Wealth and schedule is suggested firster than wearer's dressing action.

• Journal of information and communication convergence engineering
• /
• 제6권4호
• /
• pp.444-447
• /
• 2008

In this paper, we proposed the recognition system of car license plates to mitigate traffic problems. The processing sequence of the proposed algorithm is as follows. At first, a license plate segment is extracted from an acquired car image using morphological features and color information, and noises are eliminated from the extracted license plate segment using line scan algorithm and Grassfire algorithm, and then individual codes are extracted from the license plate segment using edge tracking algorithm. Finally the extracted individual codes are recognized by an FCM algorithm. In order to evaluate performance of segment extraction and code recognition of the proposed method, we used 100 car images for experiment. In the results, we could verify the proposed method is more effective and recognition performance is improved in comparison with conventional car license plate recognition methods.

• 한국멀티미디어학회논문지
• /
• 제7권12호
• /
• pp.1737-1744
• /
• 2004

In the compression methods widely used today, the image compression by VQ is the most popular and shows a good data compression ratio. Almost all the methods by VQ use the LBG algorithm that reads the entire image several times and moves code vectors into optimal position in each step. This complexity of algorithm requires considerable amount of time to execute. To overcome this time consuming constraint, we propose an enhanced self-organizing neural network for color images. VQ is an image coding technique that shows high data compression ratio. In this study, we improved the competitive learning method by employing three methods for the generation of codebook. The results demonstrated that compression ratio by the proposed method was improved to a greater degree compared to the SOM in neural networks.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1999년도 추계학술대회 논문집 학회본부 B
• /
• pp.781-783
• /
• 1999

A storage or transmission of image is difficult without image compression processing because the numbers of generated or reborned image data are very much. In case of the random signal, image compression efficiency is low doing without loss of image information, but compressibility by using JPEG is better. We used Huffman code of JPEG, it assigne the low bit value for data of a lot of generated frequency, assigne the high bit value for data of a small quantity. This paper improved image compression efficiency with transformming Q-factor and certified the results with compressed image. A proposed method is very efficience for continuos a color tone image.

• 한국공작기계학회:학술대회논문집
• /
• 한국공작기계학회 1999년도 추계학술대회 논문집 - 한국공작기계학회
• /
• pp.119-124
• /
• 1999

This paper presents new approach to technology pattern recognition of camera back cover and test of soldering. In real-time implementing of pattern recognition camera back cover and test of soldering, the MVB-03 vision board has been used. Image can be captured from standard CCD monochrome camera in resolutions up to 640$\times$480 pixels. Various options re available for color cameras, a synchronous camera reset, and linescan cameras. Image processing os performed using Texas Instruments TMS320C31 digital signal processors. Image display is via a standard composite video monitor and supports non-destructive color overlay. System processing is possible using c30 machine code. Application software can be written in Borland C++ or Visual C++

• 한국통신학회논문지
• /
• 제25권3B호
• /
• pp.557-564
• /
• 2000

This paper presents a watermarking algorithm for embedding visually recognizable pattern (Mark, Logo, Symbol, stamping or signature) into the image. first, the color image(RGB model)is transformed in YCbCr model and then the Y component is transformed into 3-level wavelet transform. Next, the values are assembled with pattern watermark. PN(pseudo noise) code at spread spectrum communication method and mutilevel watermark weights. This values are inserted into discrete wavelet domain. In our scheme, new calculating method is designed to calculate wavelet transform with integer value in considering the quantization error. and we used the color conversion with fixed-point arithmetic to be easy to make the hardware hereafter. Also, we made the new solution using mutilevel threshold to robust to common signal distortions and malicious attack, and to enhance quality of image in considering the human visual system. the experimental results showed that the proposed watermarking algorithm was superior to other similar water marking algorithm. We showed what it was robust to common signal processing and geometric transform such as brightness. contrast, filtering. scaling. JPEG lossy compression and geometric deformation.

• 한국표면공학회지
• /
• 제54권2호
• /
• pp.84-89
• /
• 2021

The visual inspection method is widely used for corrosion damage analysis of steel plate due to the cost-efficient, fast and reasonably accurate results. However, visual inspection of corrosion deteriorated degree has a problem that the reliability of results differs depending on the inspector's individual knowledge and experience. In this study, we evaluated the degree of corrosion from a given image by using image segmentation method based on the grabcut and HSV(Hue, Saturation, Value) color image processing techniques for the development of an automatic inspection tool. The code written in Python based OpenCV-python libraries was used to categorize the images.

• Journal of information and communication convergence engineering
• /
• 제1권3호
• /
• pp.123-128
• /
• 2003

This paper has addressed the implementation of the single rate Rate Adaptive Shaper(srRAS) described in RFC2963. This shaper has been proposed to use at the ingress of differentiated services networks providing Assured Forwarding Per Hop Behavior (AFPHB). srRAS is typically used in conjunction with single rate Three Color Marker(srTCM) described in RFC2697. srRAS itself is the tail-drop FIFO that is drained at a variable rate, and srTCM is the marker with metering function. G-srRAS is the same as srRAS except that RAS receives the green token state information from the downstream srTCM to avoid delaying a packet in RAS although there are sufficient tokens available to color the packet green. In this paper, we have addressed the algorithm and the architecture of srRAS, and the scheme to implement srRAS using VHDL(Very high-speed integrated circuit Hardware Description Language) and its related tools.