An integrated vision system with autofocus for wireless capsular endoscopy

被引：28

作者：

Cavallotti, C. ^{[1
]}

Piccigallo, M. ^{[1
]}

Susilo, E. ^{[1
,2
]}

Valdastri, P. ^{[1
]}

Menciassi, A. ^{[1
,2
]}

Dario, Paolo ^{[1
,2
]}

机构：

[1] Scuola Super Sant Anna, CRIM Lab, I-56025 Pisa, Italy

[2] Italian Inst Technol Network, Genoa, Italy

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2009年 / 156卷 / 01期

关键词：

Autofocus; Liquid lens; Capsule endoscopy; VARIABLE-FOCUSING MICROLENS;

D O I：

10.1016/j.sna.2009.01.028

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A prototype of a vision system for capsular endoscopy provided with autofocus function was developed. It is composed by two main parts: a wireless capsule with an adjustable focus in the range between 15 mm and 100 mm, and a personal computer where the autofocus algorithm is implemented. Several benches and ex vivo tests were performed in order to validate the developed system and encouraging results were obtained. Further miniaturization will be pursued to obtain a swallowable device adequate for capsular endoscopy procedures. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：72 / 78

页数：7

共 30 条

[1] Variable focal lens controlled by an external voltage: An application of electrowetting [J].

Berge, B ;

Peseux, J .

EUROPEAN PHYSICAL JOURNAL E, 2000, 3 (02) :159-163

[2]

Berger AA, 2005, HUMOR, V18, P227

[3] AUTOMATED MICROSCOPE FOR CYTOLOGIC RESEARCH - PRELIMINARY EVALUATION [J].

BRENNER, JF ;

DEW, BS ;

HORTON, JB ;

KING, T ;

NEURATH, PW ;

SELLES, WD .

JOURNAL OF HISTOCHEMISTRY & CYTOCHEMISTRY, 1976, 24 (01) :100-111

[4] Magnetic shells for gastrointestinal endoscopic capsules as a means to control their motion [J].

Carpi, Federico ;

Galbiati, Stefano ;

Carpi, Angelo .

BIOMEDICINE & PHARMACOTHERAPY, 2006, 60 (08) :370-374

[5]

CARTA R, 2008, EUROSENSORS 22

[6] Variable-focusing microlens with microfluidic chip [J].

Chen, J ;

Wang, WS ;

Fang, J ;

Varahramyan, K .

JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2004, 14 (05) :675-680

[7] COMPARISON OF AUTOFOCUS METHODS FOR AUTOMATED MICROSCOPY [J].

FIRESTONE, L ;

COOK, K ;

CULP, K ;

TALSANIA, N ;

PRESTON, K .

CYTOMETRY, 1991, 12 (03) :195-206

[8] Design and implementation of a voice-coil motor servo control IC for auto-focus mobile camera applications [J].

Hsu, Jhih-Da ;

Tsai, Ching-Lung ;

Tzou, Ying-Yu .

2007 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, 2007, :1357-1362

[9] Development and real-time implementation of a rule-based auto-focus algorithm [J].

Kehtarnavaz, N ;

Oh, HJ .

REAL-TIME IMAGING, 2003, 9 (03) :197-203

[10] A biomimetic undulatory tadpole robot using ionic polymer-metal composite actuators [J].

Kim, B ;

Kim, DH ;

Jung, JH ;

Park, JO .

SMART MATERIALS AND STRUCTURES, 2005, 14 (06) :1579-1585

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