Cet article traite le problème de la restauration d'un objet degradé par un sistème passe-bande idéal. Nous examinons ici le cas dans lequel l'image a ét obtenue par l'utilization d'une particulière technique de tomographie cohérente basée sur le traitement du champ rétrodiffusé. Nous étudions l'application à ce problème d'une téchnique de restauration itérative sur l'obligation que l'objet solt positif. En particulier nous considerons le cas dans lequel l'objet est formé par un ou deax points irradiateurs. I. Introduction considerons le caS dans formé par un ou deux
This paper concerns with the problem of restoring a two-dimensional object that has been distorted by an ideal band-pass imaging system. The problem is here focused to the case In which the image is obtained by using a particular tomographic technique that consist in irradiating the body to be explored by a C.W. source and processing the backscattered field. The effectiveness of constrained iterative restoration algorithms using positivity constraint is investigated with reference to the case in which the object is constituted by one and two pointform scatterers.
Constraint based image reconstruction in diffractive tomography
Tonazzini A
1987
Abstract
This paper concerns with the problem of restoring a two-dimensional object that has been distorted by an ideal band-pass imaging system. The problem is here focused to the case In which the image is obtained by using a particular tomographic technique that consist in irradiating the body to be explored by a C.W. source and processing the backscattered field. The effectiveness of constrained iterative restoration algorithms using positivity constraint is investigated with reference to the case in which the object is constituted by one and two pointform scatterers.File | Dimensione | Formato | |
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Descrizione: Constraint based image reconstruction in diffractive tomography
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