منابع مشابه
Phase Only Synthesis of Antenna Patterns Using Iterative Restoration Methods
In this work, the method of iterative Fourier transform phase reconstruction, conventionally used in holography and optical image reconstruction, is applied to phase only synthesis of antenna patterns. The method is applied to two types of pattern synthesis problems: "main lobe beam shaping" and "side-lobe-level reduction". The proposed method is most useful in the efficient employment of attai...
متن کاملIterative Methods for Image Restoration
Although image restoration methods based on spectral filtering techniques are very efficient, they can be applied only to problems with fairly simple spatially invariant blurring operators. Iterative methods, however, are much more flexible; they can be very efficient for spatially invariant as well as spatially variant blurs, they can incorporate a variety of regularization techniques and boun...
متن کاملReverse Engineering Methods for Digital Restoration Applications
In this paper we discuss the challenges of processing and converting 3D scanned data to representations suitable for interactive manipulation in the context of virtual restoration applications. We present a constrained parametrization approach that allows us to represent 3D scanned models as parametric surfaces defined over polyhedral domains. A combination of normaland spatial-based clustering...
متن کاملParallel image restoration using surrogate constraint methods
When formulated as a system of linear inequalities, the image restoration problem yields huge, unstructured, sparse matrices even for images of small size. To solve the image restoration problem, we use the surrogate constraint methods that can work efficiently for large problems. Among variants of the surrogate constraint method, we consider a basic method performing a single block projection ...
متن کاملImproved Methods Image of Maximum Restoration
IMPROVED METHODS OF MAXIMUM A POSTERIORI IMAGE RESTORATION Henry Joel Trussell Department of Electrical Engineering and Computer Science The University of New Mexico, 1976 This dissertation offers an explanation of why and how maximum a posteriori (MAP) image restoration works. A new numerical iteration scheme is derived on the basis of this explanation with a convergence criterion related to t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The American Archivist
سال: 1943
ISSN: 0360-9081
DOI: 10.17723/aarc.6.3.497248722g4584rr