Noise Insensitive Focus Value Operator for Digital Imaging Systems

被引：6

作者：

Choi, Jongseong ^{[1
]}

Kang, Hee ^{[1
]}

Lee, Chang-Min ^{[2
]}

Kang, Moon Gi ^{[1
]}

机构：

[1] Yonsei Univ, Inst TMS Informat Technol, Seoul 120749, South Korea

[2] Samsung Techwin, Adv R&D Grp, Secur & Image Solut SIS Div, Gyeonggi Do, South Korea

来源：

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2010年 / 56卷 / 02期

关键词：

Auto-focusing; Focus value; Gaussian noise; Local statistics;

D O I：

10.1109/TCE.2010.5505933

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：

Most auto-focusing algorithms based on focus values which are calculated with high frequency image components are very sensitive to noise factor. The noise under low illumination conditions generally degrades the auto-focusing performance. In this paper, we propose an operator to determine the noise insensitive focus value for digital imaging systems. The proposed algorithm determines the sharpness of a given image without the influence of noise factors. The algorithm uses spatially adaptive weights based on the local statistics of the image and the noise factors. Experiments conducted with and without noise factors demonstrate the high performance of the proposed method. (1)

引用

页码：312 / 316

页数：5

共 50 条

[21] Depths of view and focus of digital holographic imaging system
Wang, Huaying
Zhao, Baoqun
Wang, Yi
Zheng, Li
Wang, Guangjun
Wang, Dayong
INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2007: LASER, ULTRAVIOLET, AND TERAHERTZ TECHNOLOGY, 2008, 6622
[22] Power for emergency systems focus on value add
Gandica, Simon
Consulting-Specifying Engineer, 2024, 60 (01) : 12 - 15
[23] Ubiquitous digital imaging systems
Cross, J
Baber, C
Woolley, SI
SENSORS AND CAMERA SYSTEMS FOR SCIENTIFIC, INDUSTRIAL, AND DIGITAL PHOTOGRAPHY APPLICATIONS II, 2001, 4306 : 425 - 433
[24] Digital imaging and prepress systems
Anon
2002, Rogers Media (55):
[25] Extending the Depth of Field beyond Geometrical Imaging Limitations Using Phase Noise as a Focus Measure in Multiwavelength Digital Holography
Seyler, Tobias
Fratz, Markus
Beckmann, Tobias
Schiller, Annelie
Bertz, Alexander
Carl, Daniel
APPLIED SCIENCES-BASEL, 2018, 8 (07):
[26] Increasing the precision in the estimates of noise power spectrum in digital x-ray imaging systems
Gonzalez-Lopez, Antonio
PHYSICS IN MEDICINE AND BIOLOGY, 2019, 64 (23):
[27] Noise in imaging systems:: Fixed pattern noise, electronic and interference noise
López-Alonso, JM
González-Moreno, R
Alda, J
FLUCTUATIONS AND NOISE IN PHOTONICS AND QUANTUM OPTICS II, 2004, 5468 : 399 - 407
[28] BOUNDARY VALUE PROBLEMS FOR PARABOLIC SYSTEMS WITH BESSELS OPERATOR
KREKHIVS.VV
MATIICHU.MI
DOKLADY AKADEMII NAUK SSSR, 1971, 199 (04): : 773 - &
[29] Noise in imaging systems and human vision
Burgess, A
Shaw, R
Lubin, J
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1999, 16 (03): : 618 - 618
[30] A Focus Effect in some Thermal Imaging Systems
Saunders, P.
White, D. R.
TEMPERATURE: ITS MEASUREMENT AND CONTROL IN SCIENCE AND INDUSTRY, VOL 8, 2013, 1552 : 625 - 630

← 1 2 3 4 5 →