On the bias of the likelihood ratio edge detector for SAR images

被引：23

作者：

Germain, O ^{[1
]}

Réfrégier, P ^{[1
]}

机构：

[1] Ecole Natl Super Phys Marseille, Lab Signal & Image, Marseille, France

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2000年 / 38卷 / 03期

关键词：

edge dection; image processing; SAR images; speckle;

D O I：

10.1109/36.843041

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The likelihood ratio edge detector is an efficient filter for the segmentation of SAR images. We show that this filter provides biased location of the edge if it is not an "ideal" step edge of known orientation. A simple model enables us to interpret this observation and to evaluate the bias.

引用

页码：1455 / 1457

页数：3

共 9 条

[1] OPTIMAL DETECTION OF OBJECT BOUNDARIES IN UNCORRELATED SPECKLE [J].

BOVIK, AC ;

MUNSON, DC .

OPTICAL ENGINEERING, 1986, 25 (11) :1246-1252

[2] An optimal multiedge detector for SAR image segmentation [J].

Fjortoft, R ;

Lopes, A ;

Marthon, P ;

Cubero-Castan, E .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1998, 36 (03) :793-802

[3]

FJORTOFT R, 1998, EUROPTO C IMAG SIGN, V3497, P99

[4]

FROST VS, 1982, P INT GEOSCIENCE REM

[5] Edge detection and localisation in SAR images:: a comparative study of global filtering and active contour approaches [J].

Germain, O ;

Réfrégier, P .

IMAGE AND SIGNAL PROCESSING FOR REMOTE SENSING IV, 1998, 3500 :111-121

[6]

Oliver CJ, 1995, P SOC PHOTO-OPT INS, V2584, P152, DOI 10.1117/12.227124

[7] A STATISTICAL AND GEOMETRICAL EDGE DETECTOR FOR SAR IMAGES [J].

TOUZI, R ;

LOPES, A ;

BOUSQUET, P .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1988, 26 (06) :764-773

[8]

TUR M, 1982, APPL OPT, V21

[9] WATERSHEDS IN DIGITAL SPACES - AN EFFICIENT ALGORITHM BASED ON IMMERSION SIMULATIONS [J].

VINCENT, L ;

SOILLE, P .

IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 1991, 13 (06) :583-598

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