서지주요정보
웨이블릿 변환을 이용한 2-D B모드 초음파 영상 화질 개선 연구 = 2D B-mode ultrasound image enhancement based on wavelet transform
서명 / 저자 웨이블릿 변환을 이용한 2-D B모드 초음파 영상 화질 개선 연구 = 2D B-mode ultrasound image enhancement based on wavelet transform / 김용선.
발행사항 [대전 : 한국과학기술원, 2004].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8015174

소장위치/청구기호

학술문화관(문화관) 보존서고

MEE 04022

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

Ultrasound imaging systems have been an essential tool for medical diagnosis over last two decades, due its noninvasive nature, low cost, portability, real-time image formation, etc. However, one of the fundamental problems in ultrasound image is the poor image quality caused by speckle noise. The presence of speckle noise affects human interpretation of images or medical diagnosis. This paper presents a novel approach for 2-dimensional B-mode ultrasound image enhancement in the sense of subjective quality. Our assumption is that although the frequency band of speckle covers a wide range, most annoying artifacts arise from the components in a certain frequency band. Hence, by determining the corresponding speckle frequency band and removing it with a notch filter, we can alleviate the speckle noise and get a fine and smooth speckle pattern. Through the wavelet domain process, which can handle both spatial and frequency domain information, we reduce the speckle noise efficiently while enhancing edge features. The final processing results are proved to show great improvement on subjective image quality.

서지기타정보

서지기타정보
청구기호 {MEE 04022
형태사항 iv, 53 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Yong-Sun Kim
지도교수의 한글표기 : 나종범
지도교수의 영문표기 : Jong-Beom Ra
학위논문 학위논문(석사) - 한국과학기술원 : 전기및전자공학전공,
서지주기 참고문헌 : p. 49-51
주제 초음파 영상
웨이블릿 변환
ULTRASOUND IMAGE
SPECKLE
WAVELET TRANSFORM
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