APPARATUS AND METHOD FOR DENOISING SONAR IMAGES

An apparatus for denoising sonar images includes: an image receiving part for receiving a sonar image; a local modeling part for classifying input image patches into a plurality of groups based on the characteristics of the input image patches and calculating a sensing matrix; a nonlocal modeling pa...

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Bibliographische Detailangaben
1. Verfasser:	JUNG, YOUNG GEUN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES IMAGE DATA PROCESSING OR GENERATION, IN GENERAL LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	An apparatus for denoising sonar images includes: an image receiving part for receiving a sonar image; a local modeling part for classifying input image patches into a plurality of groups based on the characteristics of the input image patches and calculating a sensing matrix; a nonlocal modeling part for calculating a weight for a sparse coefficient based on similarity between covariance matrices; and a sparse coefficient calculation part for calculating the sparse coefficient using the weight; and an image restoration part for denoising a sonar image using a compression sensing technique based on the calculated sensing matrix and the calculated sparse coefficient. 소나 영상의 잡음을 제거하는 장치는, 소나 영상을 수신하는 영상 수신부와 입력 영상 패치에 대한 특징에 기초하여입력 영상 패치들을 복수개의 그룹으로 분류하여 센싱 행렬을 연산하는 국부 모델링부와, 공분산 행렬 간의 유사도에 기초하여 희소 계수에 대한 가중치를 계산하는 비국부 모델링부와 가중치를 이용하여 희소 계수를 산출하는 희소 계수 산출부와 연산된 센싱 행렬과 산출된 희소 계수에 기초하는 압축 센싱 기법을 이용하여 소나 영상의 잡음을 제거하는 영상 복원부를 포함한다