This research report presents a bundle adjustment technique which is independent on camera intrinsic parameters. Standard bundle adjustment techniques consider camera intrinsic parameters as unknowns in the optimization process. The scheme proposed in this report di ers from previous standard techniques since unknown camera intrinsic parameters are computed as a function of the 3D structure and...

Acknowledgements The first acknowledgement goes to my advisor Prof. Helder Araujo. He was the one who introduced me to computer vision research and helped on my first steps on the field. During these remarkable six years we worked and argued a lot. It was an enjoyable experience even in the bad moments when things were not going so well. This experience would never be possible without his help ...

TO THE EDITOR: The word nightmare originates from the 13th century and is composed of night and mare, suggestive of an evil female spirit, afflicting sleepers with a feeling of suffocation, as they ride on their chests. Classified as frightening dreams that awaken the sleeper from rapid eye movement sleep, 1 nightmares impact sleep quality and are linked to various health problems. Likewise, ni...

In this thesis, the object of study are robot-vision systems consisting of robot manipulators and stereo cameras. It investigates how to model, calibrate, and operate such systems, where operation refers especially to visual servoing of a tool with respect to an object to be manipulated. The main contributions of this thesis are to introduce a novel, “projective” geometrical formalization of th...

Reddy L. N. Yatavelli,1,5 Felipe Lopez-Hilfiker,1 Julia D. Wargo,1 Joel R. Kimmel,2,3,5 Michael J. Cubison,3 Timothy H. Bertram,4 Jose L. Jimenez,5 Marc Gonin,3 Douglas R. Worsnop,2,6 and Joel A. Thornton1 1Department of Atmospheric Sciences, University of Washington, Seattle, Washington, USA 2Aerodyne Research Inc., Billerica, Massachusetts, USA 3TOFWERK AG, Thun, Switzerland 4Department of Ch...

Rectified images are needed for proper depth map estimation. In our solution, we used chessboard calibration pattern and corners extraction algorithms. First step was to capture independent sequences for each camera and find chessboard corners coordinates. Coordinates obtained from every sequence was averaged to eliminate noise influence. Then intrinsic matrices (I) and distortion parameters (D...

Sulfur K-edge X-ray absorption spectroscopy (XAS) and density functional theory (DFT) calculations have been used to determine the electronic structures of two complexes [Mo(IV)O(bdt)2](2-) and [Mo(VI)O2(bdt)2](2-) (bdt = benzene-1,2-dithiolate(2-)) that relate to the reduced and oxidized forms of sulfite oxidase (SO). These are compared with those of previously studied dimethyl sulfoxide reduc...

In this paper we argue that landscape spatial structure is o f central importance in understanding the effects o f f ragmentat ion on populat ion survival Landscape spatial structure is the spatial relationships among habitat patches and the matr ix in which they are e m ~ l d e ~ Many general models o f subditrlded populat ions make the assump. tions that (1) all habitat patches are equivalent...

Finding data sources for machine learning and data mining applications can be a very complicated task in some cases. Furthermore, in many applications, the data may be quite scarce. Therefore, we sought an alternative way to obtain data and information through the large and wide video game industry, an industry which has been able to collect and build so credible data that they can be used to s...