NDLI: A new auto-focus method based on focal window searching and tracking approach for digital camera

Content Provider	IEEE Xplore Digital Library
Author	Tsung-Han Tsai Chung-Yuan Lin
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. Eng., Nat. Central Univ., Taipei (Tsung-Han Tsai)
Abstract	This paper presents a new method for auto-focus digital camera system. Our approach differs from other common auto-focus approaches, since a focal window will be searched and tracked before applying auto-focus algorithm to move the lens toward the proper position. The advantages are increasing the focus reliability and flexibility than common auto-focus approaches. Our approach consists of two major stages, motion detection and focal window searching and tracking. Motion detection firstly detects the region-of-interest (ROI) in image, then focal window searching and tracking stage selects a proper focal window among detected ROIs, and tracks this window through the consecutive image. The performance is tested by a high motion and a low motion sequences. Focus values derived from the selected focal window are shown to demonstrate that our algorithm can achieve auto-focus in both high motion and low motion conditions.
Starting Page	650
Ending Page	653
File Size	1639503
Page Count	4
File Format	PDF
ISBN	9781424416875
DOI	10.1109/ISCCSP.2008.4537305
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-12
Publisher Place	Malta
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image sensors Tracking Focusing Signal processing algorithms Digital cameras Motion detection Optical sensors Floors Lenses Testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A New Auto-Focus Method Based on Focal Window Searching and Tracking Approach for Digital Camera (2008)

Realization of auto-focusing system for cameras based on TMS320F2812 DSP

A fast auto focusing method for digital still camera

SoC design of an auto-focus driving image signal processor for mobile camera applications

Image Auto-focus System Based on Remote Web Monitor

Modified fast climbing search auto-focus algorithm with adaptive step size searching technique for digital camera

SoC design of an auto-focus driving image signal processor for mobile camera applications

A roi focusing mechanism for digital cameras.

Video CCD based portable digital still camera

A new auto-focus method based on focal window searching and tracking approach for digital camera

Similar Documents

A New Auto-Focus Method Based on Focal Window Searching and Tracking Approach for Digital Camera (2008)

Realization of auto-focusing system for cameras based on TMS320F2812 DSP

A fast auto focusing method for digital still camera

SoC design of an auto-focus driving image signal processor for mobile camera applications

Image Auto-focus System Based on Remote Web Monitor

Modified fast climbing search auto-focus algorithm with adaptive step size searching technique for digital camera

SoC design of an auto-focus driving image signal processor for mobile camera applications

A roi focusing mechanism for digital cameras.

Video CCD based portable digital still camera

A new auto-focus method based on focal window searching and tracking approach for digital camera