| 저자 | J. U. Cho, S. H. Lee, J. W. Jeon, J. T. Kim, J. D. Cho, K. M. Lee, J. H. Lee |
|---|---|
| 학회명 | International Conference on Computational Science and Its Applications |
| 학회명 (약자) | ICCAS 2004 |
| pp. | 1235-1238 |
| 학회시작일 | 2004-08-25 |
| 학회종료일 | 2004-08-27 |
| 비고 |
Thresholding has been used to reduce the number of gray values in images. Typically, a single threshold value has been used, resulting in two gray level images. Image reduction of one single threshold value, however, may lose too much of the high-frequency edge information. Thus, dynamic thresholding that uses a different threshold for each pixel is preferred instead of using a single threshold value. Dynamic thresholding can preserve high frequency details as well as reduce the size of images. Since it takes long time to perform existing software dynamic thresholding in an embedded system, this paper proposes and implements a circuit by using FPGA in order to perform a real-time dynamic thresholding. The proposed circuit consists of two counters, and threshold look-up table, and control unit. The values of two counters determine each pixel position, the threshold look-up table converts each pixel value into other value, and the control unit generates necessary control signals. On arriving from a camera to the proposed circuit, each pixel is compared with its threshold value and is converted into other gray value. An image processing system by using the proposed circuit will be implemented and some experiments will be performed.
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2012
FPGA based Dynamic Thresholding Circuit
2012.01.18
저자: J. U. Cho, S. H. Lee, J. W. Jeon, J. T. Kim, J. D. Cho, K. M. Lee, J. H. Lee
학회명: International Conference on Computational Science and Its Applications
학회명 (약자): ICCAS 2004
pp.: 1235-1238
학회시작일: 2004-08-25
학회종료일: 2004-08-27
An SoC-Based Context-Aware System Architecture
2012.01.17
저자: Keon Myung Lee and Jee-Hyong Lee
학회명: Knowledge-Based Intelligent Information and Engineering Systems
학회명 (약자): KES 2004
pp.: 573-580
학회시작일: 2004-05-16
학회종료일: 2004-05-18
A Genetic Algorithm-based Task Allocation and Scheduling Method for Multiagent Systems
2012.01.17
저자: Keon Myung Lee and Jee-Hyong Lee
학회명: Proc. of International Fuzzy Systems Association Congress 2003
학회명 (약자): Proc. of International Fuzzy Systems Association Congress 2003
pp.: 462-465
학회시작일: 2003-07-01
학회종료일: 2003-07-01
A Method for Ranking Fuzzily Fuzzy Members
2012.01.17
저자: Jee-hyong Lee, Hyung Lee-Kwang
학회명: IEEE International Conference on Fuzzy Systems
학회명 (약자): FUZZ IEEE 2000
pp.: 462-465
학회시작일: 2000-05-07
학회종료일: 2000-05-10