• 한국항해학회지
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• 제24권5호
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• pp.435-441
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• 2000

This paper deals with the development of RACOM(Radar Signal Detecting ＆ Processing Computer). RACOM is a radar display system specially designed for radar scan conversion, signal processing and PCI radar image display. RACOM contains two components； i )RSP(Radar Signal Processor) board which is a PCI based board for receiving video, trigger, heading & bearing signals from radar scanner ＆ tranceiver units and processing these signals to generate high resolution radar image, and ⅱ）Applications which perform ordinary radar display functions such as EBL, VRM and so on. Since RACOM is designed to meet a wide variety of specifications(type of output signal from tranceiver unit), to record radar images and to distribute those images in real time to everywhere in a networked environment, it can be applicable to AIS(Automatic Identification System) and VDR(Voyage Data Recorder).

• 대한전기학회:학술대회논문집
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• 대한전기학회 1992년도 하계학술대회 논문집 B
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• pp.1250-1254
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• 1992

This paper describes the designed and fabricated thermal imaging system with the SPRITE(Signal PRocessing in The Element) detector, operating in the 3-12 micron band. This system consists of an afocal telescope, a scan unit containing the SPRITE detector, an electronic processor unit and a cooler. The optical scan system utilizing rotating polygon and oscillating mirror, is 2-dimensional serial/parallel scan type using five elements of the detector. And the electronic processor unit performs digital scan conversion to reform the parallel data stream into serial analog data compatable with conventional RS-170 video. The scan field of view is 40 ${\times}$ 26.7 and the MRTD(Minium Resolvable Temperature Difference) is 0.6 K at 7.5 cycles/mm. The acquired thermal image indicates that this system has a satisfactory performance.

• 대한의용생체공학회:의공학회지
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• 제16권1호
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• pp.101-106
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• 1995

In this paper, the patient monitor consisting of ECG/Respiration Amplification, Front end CPU, Main CPU, Main Controller, Video Amplifier, Display Controller, Waveform Generator, Bus & Power Supply, 8097 Processor was developed. This patient monitor measures the patient's states in the hospital such as elecctro-cardiography, respiration, blood pressurae and temperature. The control and processing methods based on micro-processor employ the flexibility, extensibility over other conventional system. The followings are incorporated in this system. First, ECG/RESP measures the respiration by impedence pneumography. Second, FECPU utilizes an Intel 8031 microcontroller. Third, Controller function originate from a LSI CRT controller.

• 제어로봇시스템학회논문지
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• 제6권5호
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• pp.396-403
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• 2000

A thermal imaging system is implemented for the measurement and the analysis of the thermal distribution of the target objects. The main part of the system is a thermal camera in which a focal plane array typed sensor is introduced. The sensor detects the mid-range infrared spectrum of target objects and then it outputs a generic video signal which should be processed to form a frame thermal image. Here, a digital signal processor(DSP) is applied for the high speed processing of the sensor signals. The DSP controls analog-to-digital converter, performs correction algorithms and outputs the frame thermal data to frame buffers. With the frame buffers can be generated a NTSC signal and transferred the frame data to personal computer(PC) for the analysis and a monitoring of the thermal scenes. By performing the signal processing functions in the DSP the overall system achieves a simple configuration. Several experimental results indicate the performance of the overall system.

• 한국항행학회논문지
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• 제15권4호
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• pp.591-595
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• 2011

본 논문에서는 차세대 유럽형 방송 시스템인 DVB-T2(Digital Video Broadcasting-Second Generation Terrestrial) 수신기의 핵심블록인 BICM(Bit Interleaved Coded Modulation) 모듈의 구조를 설계하고 DSP(Digital Signal Processor) TMS320C6474를 통해 구현하였다. 실험결과를 통해 8비트 이상을 사용하는 고정소수점 BICM 모듈이 부동소수점 BICM 모듈과 거의 동일한 BER(Bit Error Rate) 성능을 나타냄을 알 수 있었다.

• Journal of information and communication convergence engineering
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• 제11권4호
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• pp.298-306
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• 2013

The scale invariant feature transform (SIFT) is an effective algorithm used in object recognition, panorama stitching, and image matching. However, due to its complexity, real-time processing is difficult to achieve with current software approaches. The increasing availability of parallel computers makes parallelizing these tasks an attractive approach. This paper proposes a novel parallel approach for SIFT algorithm implementation using a block filtering technique in a Gaussian convolution process on the SIMD Pixel Processor. This implementation fully exposes the available parallelism of the SIFT algorithm process and exploits the processing and input/output capabilities of the processor, which results in a system that can perform real-time image and video compression. We apply this implementation to images and measure the effectiveness of such an approach. Experimental simulation results indicate that the proposed method is capable of real-time applications, and the result of our parallel approach is outstanding in terms of the processing performance.

• 한국자동차공학회논문집
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• 제1권2호
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• pp.125-133
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• 1993

Electronic Speckle Pattern Interferometry(ESPI) using a CW laser, a video system and image processor was applied to the rotating displacement of rigid body. ESPI require no special surface preparation or attachments and displacements between any two arbitrary points on the surface can be measured. The characteristic speckle pattern formed when imaging a scattering surface illuminated by laser light retains phase information, which can be used for interferometric measurement of surface displacement. The application of this principle to measuring in-plane displacement resolved in one direction is described, together with the novel use of television equipment to detect and process the information contained in the speckle pattern. This is faster, and more convenient and versatile than customary photographic methods.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2003년도 정기총회 및 학술대회
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• pp.187-190
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• 2003

In this paper, the efficient implementation technique of media processing part in the terrestrial and satellite DMB (Digital Multimedia Broadcasting) receiver is presented. To implement the unified multimedia Processor of DMB receiver, we investigated the characteristic of DMB service and the functionality of each processing part in the DMB receiver. To implement the synchronization between audio and video media, we present the general method to use the reference clock of the stream in the DMB receiver. Also we present the method to handle the bit error of the received bitstream within the wireless net work for robust media processor.

• 정보처리학회논문지A
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• 제15A권1호
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• pp.61-68
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• 2008

본 논문에서는 MPEG-2, MPEG-4, H.264/AVC 및 VC-1 코덱 표준을 동시에 지원하는 멀티 포맷 비디오 복호기 (MFD)의 설계 방법을 제안한다. 제안하는 MFD는 디지털-TV SoC 에 필요한 고사양의 고화질급 비디오 처리를 목표로 하였다. 리스크 프로세서, 온칩 메모리 및 주변 회로 등의 크기가 큰 공용 자원들을 공유하여 크기를 최소화 하였다. 또한, 코덱 별로 추가 및 제거가 용이한 분리 가능한 구조를 사용하였다. 이러한 구조는 이미 설계되고 검증된 코덱의 안정성의 유지를 용이하게 해준다. 설계된 MFD는 65nm 공정에서 크기가 약 2.4M 게이트 이며, 동작속도는 225MHz이다. 본 논문에서 제안한 MFD는 현재까지 알려진 MFD 중 최고 성능인 고화질급(1080p@30fps) 이상의 비디오 디코딩을 지원하며, 가장 많은 종류의 비디오 코덱 표준을 지원한다.

• 융합신호처리학회논문지
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• 제10권2호
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• pp.100-105
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• 2009

방송용 디지털 콘텐츠의 저작권 보호를 위한 워터마킹은 실시간 처리가 가능하도록 만들어져야한다. 본 논문에서는 HD/SD 디지털 방송의 저작권 보호를 위한 실시간 비디오 워터마킹 칩 및 시스템을 제안한다. 제안한 칩은 ALTERA사의 STRATIX칩을 사용하여 하드웨어에 최적화된 워터마크 삽입 알고리듬을 이용하여 구현하였고, HD/SD 비디오 신호처리를 위한 시스템은 GENNUM사의 GS1560A와 GS1532를 사용하여 구현하였다. 구현 결과 원본 비디오와 워터마크 삽입된 비디오의 주관적인 화질에 대한 측정을 하였을 경우 워터마킹 때문에 약간의 인위적 화질 열화가 나타났다. 삽입된 워터마크는 A/D 변환과 같은 자연적인 비디오 공격 그리고 MPEG 압축 공격과 같은 강인성 실험 후에도 모두 추출되었다. 구현된 워터마킹 하드웨어 시스템은 고화질의 실시간 처리가 필요한 저작권 보호 시스템이 적용되는 방송국, 영화제작 환경에서 유용하게 사용될 것이다.