NDLI: 3-D object modeling from occluding contours in opti-acoustic stereo images

Content Provider	IEEE Xplore Digital Library
Author	Babaee, M. Negahdaripour, S.
Copyright Year	2013
Description	Author affiliation: Dept. of Comput. Sci., Tech. Univ. of Munich, Munich, Germany (Babaee, M.) \|\| ECE Dept., Univ. of Miami, Coral Gables, FL, USA (Negahdaripour, S.)
Abstract	Utilizing in situ measurements to build 3-D volumetric object models under variety of turbidity conditions is highly desirable for marine sciences. Feature-based structure from motion and stereo methods can become ineffective under poor visibility, where matches cannot be reliably identified in low contrast optical images. To address this, a solution is proposed by utilizing a multi-modal stereo imaging technique with coincident optical and sonar cameras. Moreover, the challenges of establishing the complex opti-acoustic correspondences are avoided, by employing 2-D occluding contours that are the images of 3-D object rims as structural features. As we circle our target object, we process matching 2-D apparent contours to construct the corresponding 3-D object rim, and compute the trajectory of the stereo rig by optiacoustic bundle adjustment in order to transform the 3-D object rims into registered samples of the object surface in a reference coordinate system. In addition to exploiting range measurements from sonar that offer unique advantages, the proposed paradigm enables computing both the 3-D positions and local surface normals of 3-D contours, leading to improved object reconstruction accuracy. We demonstrate the performance of our method based on the 3-D surface rendering of certain objects, imaged by an underwater opti-acoustic stereo system.
Sponsorship	IEEE Oceanic Eng. Soc.
Starting Page	1
Ending Page	8
File Size	1559754
Page Count	8
File Format	PDF
ISBN	9780933957404
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Sonar Optical imaging Cameras Optical sensors Adaptive optics Stereo vision Trajectory
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
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