Miseon Han

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In this paper, we design a stable controller, using LQR method in order to achieve unicycle Robot's balance by using unscented Kalman filter. After linearizing the derived Dynamics, LQR controller is designed. By performing simulations in MATLAB (MATLAB, MathWorks, USA) to apply to the physical model, the precise attitude control of the unicycle segway was(More)
In embedded systems, code size and dynamic instruction count are important performance indicators of power consumption and execution time. However, the use of different compilers may result in large different performance values even if a target machine is the same. So, the compiler selection in the system development is very important. In this paper, we(More)
In an embedded system, power consumption and execution time are important factors in performance. Code quality determines the performance factors, which is greatly influenced by a compiler. In this paper, we evaluate the performance of GCC 4.7.1 in comparison of that of GCC 4.2.2 on the EISC architecture with EEMBC in terms of the number of dynamic(More)
We investigate a depth-based refocusing method using four-dimensional (4D) light field data, which can reduce directional aliasing artifacts in a refocused image. Unlike conventional filtering-based methods, the proposed method estimates the amount of aliasing artifacts using the disparity information between two neighboring views. It then applies an exact(More)
Recently, phase change memory (PCM) has been emerging as a strong replacement for DRAM owing to its many advantages such as nonvolatility, high capacity, low leakage power, and so on. However, PCM is still restricted for use as main memory because of its limited write endurance. There have been many methods introduced to resolve the problem by either(More)
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