Multi-Primitive Hierarchical (MPH) Stereo Analysis
This paper develops and demonstrates a new computational framework for an accurate, robust, and efficient stereo approach. In multi-primitive hierarchical (MPH) computational model, stereo analysis is performed in multiple stages, incorporating multiple ...
Reconstruction of 3-D Binary Tree-Like Structures From Three Mutually Orthogonal Projections
A method is developed to generate the 3D binary representation for a tree-like object from three mutually orthogonal projections. This is done by first backprojecting the binarized images from three directions and then iteratively removing artifacts in ...
Orientation-Based Differential Geometric Representations for Computer Vision Applications
Orientation-based representations (OBR's) have many advantages. Three orientation-based differential geometric representations in computer vision literature are critically examined. The three representations are the extended Gaussian image (EGI), the ...
Automatic Initial Estimation of the Left Ventricular Myocardial Midwall in Emission Tomograms Using Kohonen Maps
A new method to make an automatic initial estimation of the position of the middle of the left ventricular (LV) myocardial wall (LV myocardial midwall) in emission tomograms is presented. This method eliminates the manual interaction still required by ...
Radiometric CCD camera calibration and noise estimation
Changes in measured image irradiance have many physical causes and are the primary cue for several visual processes, such as edge detection and shape from shading. Using physical models for charged-coupled device (CCD) video cameras and material ...
Application of Elliptic Fourier Descriptors to Symmetry Detection Under Parallel Projection
In this paper, the method of elliptic Fourier descriptors using arc length parameterization is applied to tackle the problem of detection and recovery of symmetry under parallel projection. A simple and fast iteration algorithm together with the ...
Parameterized Families of Polynomials for Bounded Algebraic Curve and Surface Fitting
Interest in algebraic curves and surfaces of high degree as geometric models or shape descriptors for different model-based computer vision tasks has increased in recent years, and although their properties make them a natural choice for object ...
Optimal Decomposition of Convex Morphological Structuring Elements for 4-Connected Parallel Array Processors
A morphological operation using a large structuring element can be decomposed equivalently into a sequence of recursive operations, each using a smaller structuring element. However, an optimal decomposition of arbitrarily shaped structuring elements is ...
Edge-Region-Based Segmentation of Range Images
In this correspondence, we present a new computationally efficient three-dimensional (3-D) object segmentation technique. The technique is based on the detection of edges in the image. The edges can be classified as belonging to one of the three ...
Statistical Bias of Conic Fitting and Renormalization
Introducing a statistical model of noise in terms of the covariance matrix of the N-vector, we point out that the least-squares conic fitting is statistically biased. We present a new fitting scheme called renormalization for computing an unbiased ...
