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A FPGA Stereo Matching Algorithm Modeled By DSP Builder

by Xiang Zhang, Zhangwei Chen
"... Abstract—This paper proposes a System-on-Programmable-Chip (SoPC) architecture to implement a stereo matching algorithm based on the sum of absolute differences (SAD) in a FPGA chip which can provide 1396×1110 disparity maps at 30 fps speed. The hardware implementation involves a 32-bit Nios II micr ..."
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microprocessor, memory interfaces and stereo matching algorithm circuit module. The stereo matching algorithm core is modeled by the Matlab-based DSP Builder. The system can process many different sizes of stereo pair images through a configuration interface. The maximum horizon resolution of stereo images

Compression of stereo image pairs and streams

by M. W. Siegel, Priyan Gunatilake, Sriram Sethuraman, A. G. Jordan - In Stereoscopic Displays and Applications V , 1994
"... We exploit the correlations between 3D-stereoscopic left-right image pairs to achieve high compression factors for image frame storage and image stream transmission. In particular, in image stream transmission, we can find extremely high correlations between left-right frames offset in time such tha ..."
Abstract - Cited by 8 (1 self) - Add to MetaCart
We exploit the correlations between 3D-stereoscopic left-right image pairs to achieve high compression factors for image frame storage and image stream transmission. In particular, in image stream transmission, we can find extremely high correlations between left-right frames offset in time

Evangelidis, “An enhanced correlation-based method for stereo correspondence with subpixel accuracy

by Emmanouil Z. Psarakis, Georgios D. Evangelidis - in Proc. of 10th IEEE ICCV , 2005
"... The invariance of the similarity measure in photometric distortions as well as its capability in producing subpixel accuracy are two desired and often required features in most stereo vision applications. In this paper we propose a new correlation-based measure which incorporates both mentioned requ ..."
Abstract - Cited by 16 (5 self) - Add to MetaCart
parameter, its maximization results in a closed form solution, resulting in reduced complexity for its use in matching techniques. Application of the proposed measure in a number of benchmark stereo pair images reveals its superiority over existing correlation-based techniques used for sub-pixel accuracy. 1

Epsilon Stereo Pairs

by Yuanyuan Ding, Jingyi Yu - In Proc. British Machine Vision Conference I , 2007
"... Human stereo vision works by fusing a pair of perspective images with a purely horizontal parallax. Recent developments suggest that very few varieties of multiperspective stereo pairs exist. In this paper, we introduce a new stereo model, which we call epsilon stereo pairs, for fusing a broader cla ..."
Abstract - Cited by 4 (4 self) - Add to MetaCart
Human stereo vision works by fusing a pair of perspective images with a purely horizontal parallax. Recent developments suggest that very few varieties of multiperspective stereo pairs exist. In this paper, we introduce a new stereo model, which we call epsilon stereo pairs, for fusing a broader

Visual Odometry

by David Nistér, Oleg Naroditsky, James Bergen - Proc. IEEE Conf. Computer Vision and Pattern Recognition (CVPR’04 , 2004
"... We present a system that estimates the motion of a stereo head or a single moving camera based on video input. The system operates in real-time with low delay and the motion estimates are used for navigational purposes. The front end of the system is a feature tracker. Point features are matched bet ..."
Abstract - Cited by 299 (5 self) - Add to MetaCart
between pairs of frames and linked into image trajectories at video rate. Robust estimates of the camera motion are then produced from the feature tracks using a geometric hypothesize-and-test architecture. This generates what we call visual odometry, i.e. motion estimates from visual input alone

Compression of Stereo Image Pairs and Streams

by Siegel Priyan, M. W. Siegel, Priyan Gunatilake, Sriram Sethuraman - In Stereoscopic Displays and Applications V , 1994
"... We exploit the correlations between 3D-stereoscopic left-right image pairs to achieve high compression factors for image frame storage and image stream transmission. In particular, in image stream transmission, we can find extremely high correlations between left-right frames offset in time such tha ..."
Abstract - Add to MetaCart
We exploit the correlations between 3D-stereoscopic left-right image pairs to achieve high compression factors for image frame storage and image stream transmission. In particular, in image stream transmission, we can find extremely high correlations between left-right frames offset in time

The Fundamental matrix: theory, algorithms, and stability analysis

by Q.-T. Luong, O.D. Faugeras - International Journal of Computer Vision , 1995
"... In this paper we analyze in some detail the geometry of a pair of cameras, i.e. a stereo rig. Contrarily to what has been done in the past and is still done currently, for example in stereo or motion analysis, we do not assume that the intrinsic parameters of the cameras are known (coordinates of th ..."
Abstract - Cited by 272 (13 self) - Add to MetaCart
In this paper we analyze in some detail the geometry of a pair of cameras, i.e. a stereo rig. Contrarily to what has been done in the past and is still done currently, for example in stereo or motion analysis, we do not assume that the intrinsic parameters of the cameras are known (coordinates

ENVIRONMENT OBSERVATION BY STRUCTURE FROM MOTION WITH AN OMNI-DIRECTIONAL CAMERA

by Tomoaki Harada, Atsushi Yamashita, Toru Kaneko
"... Measurement of a surrounding environment structure is important for mobile robots to make autonomous locomotion. In this paper, we propose a method for three-dimensional measurement of the environment using an omni-directional camera installed on a mobile robot. The method is based on structure from ..."
Abstract - Cited by 3 (2 self) - Add to MetaCart
from motion under the assumption that the environment is static. Along with the image sequence, it tracks feature points to get corresponding points for stereo matching. Using stereo pair images taken at selected observation points, the method estimates the relative relations of camera positions

Digital Elevation Model Generation and Retrieval of Terrain Attributes using CARTOSAT-1 Stereo Data

by Samadrita Mukherjee, Anirban Mukhopadhyay, Ashutosh Brardwaj, Arun Mondal San, Sugata Hazra
"... Terrain analysis is a very important part of the study of surface processes. Although several techniques have been used historically to study terrain, the use of satellite imageries has become one of the optimum methods now. Presently there are lots of satellite imageries available for extraction of ..."
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of elevation features microwave optical etc. The stereo pair images have a great potentiality in the study of terrain analysis. The present study deals with the generation of Digital Elevation Model (DEM) using CARTOSAT-1 stereo data and retrieval of terrain attributes thereof for western Dehradun area

A Maximum-Flow Formulation of the N-camera Stereo Correspondence Problem

by Sebastien Roy, Ingemar Cox , 1998
"... This paper describes a new algorithm for solving the N-camera stereo correspondence problem by transforming it into a maximum-flow problem. Once solved, the minimum-cut associated to the maximumflow yields a disparity surface for the whole image at once. This global approach to stereo analysis provi ..."
Abstract - Cited by 258 (4 self) - Add to MetaCart
This paper describes a new algorithm for solving the N-camera stereo correspondence problem by transforming it into a maximum-flow problem. Once solved, the minimum-cut associated to the maximumflow yields a disparity surface for the whole image at once. This global approach to stereo analysis
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