Structure from motion (SfM) comprises techniques for estimating 3D structures from uncalibrated 2D image sequences. This work focuses on two contributions: Firstly, a stability analysis is performed and the error propagation of image noise is studied. Secondly, to stabilize SfM, we present two optimization schemes by using a priori knowledge about collinearity or coplanarity of feature points i...

In this paper, we introduce the concepts of $2$-isometry, collinearity, $2$%-Lipschitz mapping in $2$-fuzzy $2$-normed linear spaces. Also, we give anew generalization of the Mazur-Ulam theorem when $X$ is a $2$-fuzzy $2$%-normed linear space or $Im (X)$ is a fuzzy $2$-normed linear space, thatis, the Mazur-Ulam theorem holds, when the $2$-isometry mapped to a $2$%-fuzzy $2$-normed linear space...

Compared with prime lenses, zoom lenses have inherent advantages in terms of operational flexibility. Zoom lens camera systems have therefore been extensively adopted in computer vision where precise measurement is not the primary objective. However, the variation of intrinsic camera parameters with respect to zoom lens settings poses a series of calibration challenges that have inhibited wides...

This work is concerned with the development and study of a minimum residual norm subspace method based on the generalized conjugate residual method with inner orthogonalization (GCRO) method that allows flexible preconditioning and deflated restarting for the solution of nonsymmetric or non-Hermitian linear systems. First we recall the main features of flexible generalized minimum residual with...

The object-oriented metrics suite proposed by Chidamber and Kemerer (CK) is a measurement 18 approach towards improved object-oriented design and development practices. However, existing studies 19 evidence traces of collinearity between some of the metrics and low ranges of other metrics, two facts which 20 may endanger the validity of models based on the CK suite. As high correlation may be a...

The ability to extract contours in cluttered visual scenes, which is a crucial step in visual processing, declines with healthy aging, but the reasons for this decline are not well understood. In three experiments, we examined how the effect of aging on contour discrimination varies as a function of contour and distracter inter-element spacing, collinearity, and stimulus duration. Spiral-shaped...

A number of methods are presented for finding clusters in collinear collections of line segments. The methods are of two kinds merging methods and splitting methods. Both make use of an evaluation function, and several alternative functions are illustrated. The methods are evaluated using randomly generated clusters on backgrounds containing varying amounts of noise. Image processing Segmentati...

The utilization of integrated GPS/INS for direct sensor orientation has received increasing attention by the airborne survey and remote sensing community in the past few years. The availability of high accuracy position and orientation information, obtained from the GPS/INS integration, allows the direct determination of the image orientation parameters without the need for ground control point...