WorldCat Identities

Poggio, Tomaso

Overview
Works: 150 works in 257 publications in 2 languages and 2,933 library holdings
Genres: Conference proceedings 
Roles: Author, Editor, Publishing director
Classifications: QP408, 006.37
Publication Timeline
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Most widely held works by Tomaso Poggio
Perceptual learning( Book )

9 editions published in 2002 in English and held by 306 WorldCat member libraries worldwide

Perceptual learning is the specific and relatively permanent modification of perception and behavior following sensory experience. It encompasses parts of the learning process that are independent from conscious forms of learning and involve structural and/or functional changes in primary sensory cortices. A familiar example is the treatment for a "lazy" or crossed eye. Covering the good eye causes gradual improvement in the weaker eye's cortical representations. If the good eye is patched too long, however, it learns to see less acutely. This book presents advances made in the last decade in this rapidly growing field. The first part examines neuronal changes caused by lesions or external influences. It discusses the effects of these changes on behavior and the extent to which plasticity in sensory systems is possible. Taking a broader view, the second part looks at how more conscious or systemic stimuli cause cortical changes. Clinical trials in which subjects are taught to recognize visual and auditory stimuli demonstrate the relationship between perceptual and cognitive learning. The final sections offer general models of perceptual learning and discuss the future of the field
Theoretical approaches in neurobiology : based on a work session of the Neurosciences Research Program( Book )

7 editions published between 1980 and 1981 in English and held by 274 WorldCat member libraries worldwide

Biologically motivated computer vision : First IEEE International Workshop BMCV 2000, Seoul, Korea, May 2000 : proceedings by S.-W Lee( Book )

16 editions published in 2000 in English and held by 260 WorldCat member libraries worldwide

This book constitutes the refereed proceedings of the First IEEE/CS International Workshops on Biologically Motivated Computer Vision, BMCV 2000, held in Seoul Korea in May 2000. The 56 revised papers presented together with eight invited papers were carefully reviewed and selected from 90 full paper submissions. The book is divided in topical sections on segmentation, detection, and object recognition; computational models; active and attentive vision; ICA and space-variant imaging; and neural networks and applications
Early visual learning( Book )

8 editions published in 1996 in English and Undetermined and held by 235 WorldCat member libraries worldwide

Exploring brain functions : models in neuroscience : report of the Dahlem Workshop on Exploring Brain Functions: Models in Neuroscience, Berlin, 1991 September 29-October 4 by Models in Neuroscience Dahlem Workshop on Exploring Brain Functions( Book )

7 editions published between 1991 and 1993 in English and held by 127 WorldCat member libraries worldwide

Brain Informatics International Conference, BI 2010, Toronto, ON, Canada, August 28-30, 2010. Proceedings by Yiyu Yao( )

2 editions published in 2010 in English and held by 18 WorldCat member libraries worldwide

Brain informatics : international conference, BI 2010, Toronto, Canada, August 28 - 30, 2010 ; proceedings by Yiyu Yao( )

4 editions published in 2010 in English and held by 16 WorldCat member libraries worldwide

This book constitutes the refereed proceedings of the International Conference on Brain Informatics, BI 2010, held in Toronto, China, in August 2010. The 60 revised full papers presented were carefully reviewed and selected from 222 submissions. The papers are organized in topical sections on cognitive computing; data brain and analysis; neuronal modeling and brain modeling; perception and information processing; learning; cognition-inspired applications; and WICI perspectives on brain informatics
Vision by man and machine how the brain processes visual information may be suggested by studies in computer vision (and vice versa) by Tomaso Poggio( Book )

8 editions published in 1984 in English and Undetermined and held by 8 WorldCat member libraries worldwide

The development of increasingly sophisticated and powerful computers in the last few decades has frequently stimulated comparisons between them and the human brain. Such comparisons will become more earnest as computers are applied more and more to tasks formerly associated with essentially human activities and capabilities. The expectation of a coming generation of intelligent computers and robots with sensory, motor and even intellectual skills comparable in quality to our own is becoming more widespread and is leading to a new and potentially productive analytical science of information processing. In no field has this new approach been so precisely formulated and so thoroughly exemplified as in the field of vision. As the dominant sensory modality of man, vision is one of the major keys to our mastery of the environment, to our understanding and control of the objects wich surroud us. If we wish to create robots capable of performing complex manipulative tasks in a changing environment, we must surely endow them with (among other things) adequate visual powers. How can we set about designing such flexible and adaptive robots? In designing them, can we make use of our rapidly growing knowledge of the human brain, and if so, how at the same time, can our experience in designing artificial vision systems help us to understand how the brain analyzes visual information?
L'occhio e il cervello by Tomaso Poggio( Book )

3 editions published in 1991 in Italian and held by 6 WorldCat member libraries worldwide

From understanding computation to understanding neural circuitry by David Marr( Book )

3 editions published in 1976 in English and Undetermined and held by 6 WorldCat member libraries worldwide

The CNS needs to be understood at four nearly independent levels of description: (1) that at which the nature of a computation is expressed; (2) that at which the algorithms that implement a computation are characterized; (3) that at which an algorithm is committed to particular mechanisms; and (4) that at which the mechanisms are realized in hardware. In general, the nature of a computation is determined by the problem to be solved, the mechanisms that are used depend upon the available hardware, and the particular algorithms chosen depend on the problem and on the available mechanisms. Examples are given of theories at each level. (Author)
Dynamic faces : insights from experiments and computation by Cristóbal Curio( )

5 editions published in 2011 in English and held by 6 WorldCat member libraries worldwide

The recognition of faces is a fundamental visual function with importance for social interaction and communication. This volume offers a state-of-the-art, interdisciplinary overview of recent work on dynamic faces from both biological and computational perspectives
A regularized solution to edge detection by Tomaso Poggio( Book )

2 editions published in 1985 in English and held by 6 WorldCat member libraries worldwide

The authors consider edge detection as the problem of measuring and localizing changes of light intensity in the image. Edge detection does not have a precisely defined goal. The word edge itself, which refers to physical properties of objects, is somewhat of a misnomer. Several years of experience have shown that the ideal goal of detecting and locating physical edges in the surfaces being imaged is very difficult and still out of reach. Edge detection has come to be defined as the first step in this goal of detecting physical changes such as object boundaries--the operation of detecting and locating changes in intensity in the image. Other processes which operate on these measurements of intensity changes will then group boundaries and label and characterize them in terms of the properties of the 3-D surfaces. Intended in this narrow sense, edge detection--this first step in processing the image--is mainly the process that measures, detects and localizes changes of intensity. Derivatives must be estimated correctly to label the critical points in the image intensity array, characterize their local properties (are they minima or maxima or saddle points?) and thus relate them to the underlying physical process(are they shadow edges or depth discontinuities?)
Zero-crossings and spatiotemporal interpolation in vision: aliasing and electrical coupling between sensors by Tomaso Poggio( Book )

2 editions published in 1982 in English and held by 5 WorldCat member libraries worldwide

We will briefly outline a computational theory of the first stages of human vision according to which; (a) the retinal image is filtered by a set of centresurround receptive fields (of about 5 different spatial sizes) which are approximately bandpass in spatial frequency; and (b) zero-crossings are detected independently in the output of each of these channels. Zero-crossings in each channel are then a set of discrete symbols which may be used for later processing such as contour extraction and stereopsis. A formulation of Logan's zero-crossing results is proved for the case of Fourier polynomials an extension of Logan's theorem to 2-dimensional functions is also proved. Within this framework, we shall describe an experimental and theoretical approach (developed by one of us with M. Fahle) to the problem of visual acuity and hyperacuity of human vision. The positional accuracy achieved, for instance, in reading a vernier is astonishingly high, corresponding to a fraction of the spacing between adjacent photoreceptors in the fovea. Stroboscopic presentation of a moving object can be interpolated by our visual system into the perception of continuous motion; and this 'spatiotemporal' interpolation also can be very accurate. It is suggested that the known spatiotemporal properties of the channels envisaged by the theory of visual processing outlined above implement an interpolation scheme which can explain human vernier acuity for moving targets
Ill-posed problems and regularization analysis in early vision by Tomaso Poggio( Book )

4 editions published in 1984 in English and held by 5 WorldCat member libraries 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)
Biologically motivated computer vision : First IEEE/CS International Workshop BMCV 2000, Seoul, Korea, May 2000 : proceedings by IEEE/CS International Workshop BMCV 2000( )

1 edition published in 2000 in English and held by 5 WorldCat member libraries worldwide

Cooperative computation of stereo disparity by David Marr( Book )

3 editions published in 1976 in English and held by 5 WorldCat member libraries worldwide

The extraction of stereo disparity information from two images depends upon establishing a correspondence between them. This article analyzes the nature of the correspondence computation, and derives a cooperative algorithm that implements it. It is show that this algorithm successfully extracts information from random-dot stereograms, and its implications for the psychophysics and neurophysiology of the visual system are briefly discussed
Scaling Theorems for Zero-Crossings by A. L Yuille( Book )

4 editions published in 1983 in English and held by 4 WorldCat member libraries worldwide

The authors characterize some properties of the zero-crossings of the laplacian of signals - in particular images - filtered with linear filters, as a function of the scale of the filter. They prove that in any dimension the only filter that does not create zero-crossings as the scale increases is the gaussian. This result can be generalized to apply to level-crossings of any linear differential operator: it applies in particular to ridges and ravines in the image intensity. In case of the second derivative along the gradient it is proved that there is no filter that avoids creation of zero-crossings
Analysis of a cooperative stereo algorithm by David Marr( Book )

2 editions published in 1977 in English and held by 4 WorldCat member libraries worldwide

Marr and Poggio (1976) recently described a cooperative algorithm that solves the correspondence problem for stereopsis. This article uses a probabilistic technique to analyze the convergence of that algorithm, and derives the conditions governing the stability of the solution state. The actual results of applying the algorithm to random-dot stereograms are compared with the probabilistic analysis. A satisfactory mathematical analysis of the asymptotic behavior of the algorithm is possible for a suitable choice of the parameter values and loading rules, and again the actual performance of the algorithm under these conditions is compared with the theoretical predictions. Finally, some problems raised by the analysis of this type of 'cooperative' algorithm are briefly discussed. (Author)
A theory of human stereo vision by David Marr( Book )

2 editions published in 1977 in English and held by 4 WorldCat member libraries worldwide

An algorithm is proposed for solving the stereoscopic matching problem. The algorithm consists of five steps: (1) Each image is filtered with bar masks of four sizes that vary with eccentricity; the equivalent filters are about one octave wide. (2) Zero-crossings of the mask values are localized, and positions that correspond to terminations are found; (3) For each mask size, matching takes place between paris of zero-crossings or terminations of the same sign in the two images, for a range of disparities up to about the width of the mask's central region; (4) Wide masks can control vergence movements, thus causing small masks to come into correspondence; and (5) When a correspondence is achieved, it is written into a dynamic buffer, called the 2-1/2-D sketch. It is shown that this proposal provides a theoretical framework for most existing psychophysical and neurophysiological data about stereopsis. Several critical experimental predictions are also made, for instance about the size of Panum's area under various conditions. The results of such experiments would tell us whether, for example, cooperativity is necessary for the fusion process
Retinal ganglion cells : a functional interpretation of dendritic morphology by C Koch( Book )

1 edition published in 1982 in English and held by 4 WorldCat member libraries worldwide

 
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Alternative Names
Poggio, T.

Poggio, T.A.

Poggio, T. (Tomaso)

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Biologically motivated computer vision : First IEEE International Workshop BMCV 2000, Seoul, Korea, May 2000 : proceedingsExploring brain functions : models in neuroscience : report of the Dahlem Workshop on Exploring Brain Functions: Models in Neuroscience, Berlin, 1991 September 29-October 4Brain Informatics International Conference, BI 2010, Toronto, ON, Canada, August 28-30, 2010. ProceedingsBrain informatics : international conference, BI 2010, Toronto, Canada, August 28 - 30, 2010 ; proceedingsDynamic faces : insights from experiments and computationBiologically motivated computer vision : First IEEE/CS International Workshop BMCV 2000, Seoul, Korea, May 2000 : proceedings