Journal of the Korean Institute of Telematics and Electronics S (전자공학회논문지S)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Image enhancement using software quadrature detector

소프트웨어 쿼드러춰 검출기를 이용한 영상개선

  • Ko, Dae-Sik (Dept. of Elec. Eng., Mokwon Univ.) ;
  • Kim, Hyun (Dept. of Elec. Eng., Kyunghee Univ.) ;
  • Jun, Kye-Suk (Dept. of Elec. Eng., Kyunghee Univ.)
  • 고대식 (목원대학교 전자공학과) ;
  • 김현 (경희대학교 전자공학과) ;
  • 전계석 (경희대학교 전자공학과)
  • Published : 1998.05.01
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Abstract

In this paper, we proposed method of performance enhancement of the ultrasonic imaging system using quadrature detector and implementation of the software quandrature detector. Since the quadrature detector is more sensitive than the enbelope detector of the conventional ultrasonic imaging syustem, we are able to achieve the contrast enhnacement. Although hardware quadrature detector is able to process high sped data acquisition, its hardware has complexity. In order to show the performance of the software quadrature we have constructed ultrasonic signal processing system and obtained the reflected signal from the aluminum specimen using A/D convertor. Our experimental results showed that image of the quadrature detector is better than that of the envelope detector.

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