MiRyong Park | Chungnam National University (original) (raw)

Papers by MiRyong Park

... It contains L2/L3 wire-speed forwarding function, Layer 2 VLAN (Virtual LAN), Bridging, and M... more ... It contains L2/L3 wire-speed forwarding function, Layer 2 VLAN (Virtual LAN), Bridging, and MSTP ... packet metering and dropping with tail drop, RED(Random Early Drop) and Weighted-RED, packet DSCP remarking and scheduling with priority based Queuing and WFQ ...

2017 17th International Conference on Control, Automation and Systems (ICCAS), 2017

This paper presents the Radar and IR sensor fusion method for objection detection. The infrared c... more This paper presents the Radar and IR sensor fusion method for objection detection. The infrared camera parameter calibration with Levenberg-Marquardt (LM) optimization method is proposed based on the Radar ranging data represented by Cartesian coordinate compared with 6 fusion methods. The proposed method firstly performs the estimation of the intrinsic parameter matrix of infrared camera with some optical trick. Then the method searches the extrinsic parameters using the generative approach. The initial angle and translation of the extrinsic parameters are optimized by the LM method with the geometrical cost function. In the experiments, the performance of proposed method outperforms by a maximum 13 times the performance of the other baseline methods on the averaged Euclidian distance error. In future work, the angular noise of the Radar information will be improved and the proposed method will provide the effective proposals for the deep neural network.

Communications in Computer and Information Science, 2012

To propagate emergency messages including vehicle accident, traffic congestion, environmental inf... more To propagate emergency messages including vehicle accident, traffic congestion, environmental information at the highway driving is very crucial to provide safety attention to the follower drivers and passengers at the Vehicular Ad-Hoc Network (VANET). We design simple and easy implementable broadcasting scheme, SLBP(SNR based Linear Back-Off Protocol) which selects transmission sequence as based on received SNR(Signal Noise Ratio) value and linearly back-off at each receiver node inside same propagation range under not having priori neighbor’s information. We focus on the messages transmission delay, propagation distance and broadcasting storm size as varying the Wi-Fi equipment penetration rate on vehicles to estimate a deploy scenario of emergency propagation service. We examine proposed scheme by ns-3 simulation. NS-3 Simulation results show that the proposed SLBP scheme is less transmission packet sending to reach destination than simple broadcast flooding algorithm. Also simulation shows severe transmission delay under the condition of less 30% Wi-Fi equipment penetration rate both general broadcasting and SLBP scheme.

Journal of Institute of Control Robotics and Systems, 2017

In this paper, we investigate pedestrian detection from visible color imagery in a manner that re... more In this paper, we investigate pedestrian detection from visible color imagery in a manner that reduces the number of false positives (FPs) per frame. We propose a simple way to eliminate many of such unwanted FPs that usually result from applying a state-of-the-art pedestrian object detector to a visible color image. The symmetric structure of pedestrian bodies can often be a good clue to distinguish them from non-pedestrians. Hence, each and every individual detected object (bounded box) in the initial step of detection is used to reconstruct some new symmetric-looking objects. If any of these objects are detected, they are confirmed to be a person; otherwise, they are omitted from the very first list of detected objects. Experimental results show how these FPs are removed using such a simple technique while maintaining the previous low miss rate.

The Journal of Korean Institute of Communications and Information Sciences, 2018

본 논문에서는 차량용 77GHz FMCW(Frequency Modulated Continuous Wave) 레이다 신호처리 알고리즘을 설계하고 구현한다. 또한 알고리즘의 성능... more 본 논문에서는 차량용 77GHz FMCW(Frequency Modulated Continuous Wave) 레이다 신호처리 알고리즘을 설계하고 구현한다. 또한 알고리즘의 성능 평가를 위해 레이더 파형을 송수신하는 FEM(Front End Module)과 수신된 신호를 처리하는 BEM(Back End Module)으로 구성된 77GHz 레이다 센서를 구현하였다. 신호처리 알고리즘은 BEM에 설치된 DSP(Digital Signal Processor) 상에 구현하였고 FEM으로부터 전달된 신호를 수신하여 처리하도록 하였다. 신호처리 알고리즘의 평가를 위해 레이다 파형을 설계하고 모의 표적과 실제 차량을 이용한 측정 시험을 실시한 결과 다수의 표적 동시 탐지와 측정 오차를 감안한 위치 추정을 하고 있음을 확인하였다.

IEICE Electronics Express, 2018

This paper reports a method to improve a degraded range resolution for FMCW radar. The proposed p... more This paper reports a method to improve a degraded range resolution for FMCW radar. The proposed post-processing method can achieve an improved range resolution without increasing a signal bandwidth by eliminating factors that can degrade the range resolution based on the non-negative least-squares method. For an FMCW radar adopting the post-processing method with the center frequency of 76.5 GHz and the signal bandwidth of 200 MHz, simulation results show that the degraded range resolution of 160 cm is improved to 70 cm, and measurements show that two corner reflectors with the radar cross section of 10 dBsm located at 70 cm range intervals can be distinguished.

2016 IEEE International Conference on Consumer Electronics-Asia (ICCE-Asia), 2016

This paper proposes novel radiometric temperature based far infrared thermal dataset and thermal ... more This paper proposes novel radiometric temperature based far infrared thermal dataset and thermal infrared radiometry-aggregated channel feature (TIR-ACF). The proposed approach achieved improved detection performance by 5% in the temperature dataset for pedestrian detection. Temperature information can be building blocks beyond the limit of gray infrared data processing.

2018 15th International Conference on Control, Automation, Robotics and Vision (ICARCV)

IEICE Transactions on Electronics