WorldCat Identities

Torre, V.

Overview
Works: 10 works in 12 publications in 2 languages and 13 library holdings
Classifications: Q335.M41,
Publication Timeline
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Most widely held works by V Torre
On edge detection by Massachusetts Institute of Technology( Book )

2 editions published in 1984 in English and held by 3 WorldCat member libraries worldwide

Edge detection is the process that attempts to characterize the intensity changes in the image in terms of the physical processes that have originated them. A critical, intermediate goal of edge detection is the detection and characterization of significant intensity changes. This paper discusses this part of the edge detection problem. To characterize the types of intensity changes derivatives of different types, and possibly different scales, are needed. Thus, we consider this part of edge detection as a problem in numerical differentiation. We show that numerical differentiation of images is an ill-posed problem in the sense of Hadamard. Differentiation needs to be regularized by a regularizing filtering operation before differentiation. This shows that this part of edge detection consists of two steps, a filtering step and a differentiation step. We discuss recent results on the behavior and the information content of zero crossings obtained with filters of different sizes. These results imply a specific order in the sequence of filtering and differentiation operations. Topological properties are preserved by level-crossings
Ill-posed problems in early vision by Mario Bertero( Book )

2 editions published in 1987 in English and held by 3 WorldCat member libraries worldwide

Reduccion de problemas de adherencia en procesos de galvanizado mediante tecnicas de mineria de datos by F. J Martinez de Pison( )

1 edition published in 2007 in Spanish and held by 1 WorldCat member library worldwide

Improvement of Quality Management in the Cold Rolling and Finishing Area by Combining Failure Mode and Effect Analysis With Data-based Approaches by N Holzknecht( Book )

1 edition published in 2007 in English and held by 1 WorldCat member library worldwide

Green theorems and qualitative properties of the optical flow by Tomaso Poggio( Book )

1 edition published in 1991 in English and held by 1 WorldCat member library worldwide

How can one compute qualitative properties of the optical flow, such as expansion or rotation, in a way which is robust and invariant to the position of the focus of expansion or the center of rotation? We suggest a particularly simple algorithm, well-suited to VLSI implementations, that exploits well-known relations between the integral and differential properties of vector fields and their linear behaviour near singularities
Microelectronics in nerve cells : dendritic morphology and information processing by Tomaso Poggio( Book )

1 edition published in 1981 in English and held by 1 WorldCat member library worldwide

The use of optical flow for road navigation by A Giachetti( Book )

1 edition published in 1998 in English and held by 1 WorldCat member library worldwide

Ill-posed problems and regularization analysis in early vision by Tomaso Poggio( Book )

1 edition published in 1984 in English and held by 1 WorldCat member library worldwide

One of the best definitions of early vision is that it is inverse optics-a set of computational problems that both machines and biological organisms have to solve. While in classical optics the problem is to determine the images of physical objects, vision is confronted with the inverse problem of recovering three-dimensional shape from the light distribution in the image. Most processes of early vision such as stereomatching, computation of motion and all the 'structure from' processes can be regarded as solutions to inverse problems. This common characteristic of early vision can be formalized: most early vision problems are 'ill-posed problems' in the sense of Hadamard. It is shown that a mathematical theory developed for regularizing ill-posed problems lease in a natural way to the solution of early vision problems in terms of variational principles of a certain class. This is a new theoretical framework for some of the variational solutions already obtained in the analysis of early vision processes. It also shows how several other problems in early vision can be approached and solved. (Author)
Computations in the vertebrate retina: gain enhancement, differentiation and motion discrimination by Massachusetts Institute of Technology( Book )

1 edition published in 1986 in English and held by 1 WorldCat member library worldwide

Nonlinear interactions in a dendritic tree : localization, timing and role in information processing by Tomaso Poggio( Book )

1 edition published in 1983 in English and held by 0 WorldCat member libraries worldwide

 
Audience Level
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Audience Level
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  Kids General Special  
Audience level: 0.82 (from 0.72 for Green theo ... to 0.99 for Reduccion ...)

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