MAXIMUM-ENTROPY IMAGE DECONVOLUTION IN HIGH-RESOLUTION ELECTRON-MICROSCOPY

被引：77

作者：

HU, JJ

LI, FH

机构：

[1] Institute of Physics, Chinese Academy of Sciences, Beijing

来源：

ULTRAMICROSCOPY | 1991年 / 35卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0304-3991(91)90086-L

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

The principle of image deconvolution in HREM by means of maximum entropy (ME) is introduced. The ME image deconvolution was performed in terms of a single image taken at an arbitrary defocus condition or in terms of the combination of an image with the corresponding electron diffraction pattern. The weighted ME method is introduced for crystals thicker than a weak phase object. The test results on simulated images of chlorinated-copper phthalocyanine for various defocus values are shown. The method is also efficient for crystals consisting of atoms with great differences in atomic weight and for very noisy images.

引用

页码：339 / 350

页数：12

共 33 条

[1] MAXIMUM-ENTROPY DATA RESTORATION USING BOTH REAL-SPACE AND FOURIER-SPACE ANALYSIS [J].

ANDERSON, DM ;

MARTIN, DC ;

THOMAS, EL .

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 1989, 45 :686-698

[2] A QUANTITATIVE-QUALITATIVE MEASURE OF INFORMATION IN CYBERNETIC SYSTEMS [J].

BELIS, M ;

GUIASU, S .

IEEE TRANSACTIONS ON INFORMATION THEORY, 1968, 14 (04) :593-+

[3] MAXIMUM-ENTROPY AND THE FOUNDATIONS OF DIRECT METHODS [J].

BRICOGNE, G .

ACTA CRYSTALLOGRAPHICA SECTION A, 1984, 40 (JUL) :410-445

[4] ELECTRON-DENSITY IMAGES FROM IMPERFECT DATA BY ITERATIVE ENTROPY MAXIMIZATION [J].

COLLINS, DM .

NATURE, 1982, 298 (5869) :49-51

[5] ELECTRON-MICROSCOPE IMAGE CONTRAST FOR THIN CRYSTALS [J].

COWLEY, JM ;

IIJMA, S .

ZEITSCHRIFT FUR NATURFORSCHUNG PART A-ASTROPHYSIK PHYSIK UND PHYSIKALISCHE CHEMIE, 1972, A 27 (03) :445-+

[6] MAXIMUM-ENTROPY METHODS AND DARK FIELD MICROSCOPY IMAGES [J].

FARROW, NA ;

OTTENSMEYER, FP .

ULTRAMICROSCOPY, 1989, 31 (03) :275-284

[7] APPROXIMATIONS FOR CALCULATION OF HIGH-RESOLUTION ELECTRON-MICROSCOPE IMAGES OF THIN-FILMS [J].

FEJES, PL .

ACTA CRYSTALLOGRAPHICA SECTION A, 1977, 33 (JAN1) :109-&

[8]

Guiasu S., 1971, Reports on Mathematical Physics, V2, P165, DOI 10.1016/0034-4877(71)90002-4

[9] MAXIMUM-ENTROPY METHOD IN IMAGE-PROCESSING [J].

GULL, SF ;

SKILLING, J .

IEE PROCEEDINGS-F RADAR AND SIGNAL PROCESSING, 1984, 131 (06) :646-659

[10] IMAGE-PROCESSING IN HIGH-RESOLUTION ELECTRON-MICROSCOPY USING THE DIRECT METHOD .2. IMAGE DECONVOLUTION [J].

HAN, F ;

FAN, H ;

LI, F .

ACTA CRYSTALLOGRAPHICA SECTION A, 1986, 42 :353-356

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