کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1830347 | 1526494 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Variances, covariances and artifacts in image deconvolution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper we investigate the role of estimator variance and covariance in signal and image deconvolution, where artificial structures and large fluctuations are frequently observed. The deconvolution procedure adopted in this paper is based on the Least Squares Method and the regularization, on a minimum variance property. The whole covariance matrices were taken into account in every step of the deconvolution and regularization procedures. We show that the covariances created by the deconvolution procedure are at the origin of the observed artifacts in the recovered signal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 580, Issue 3, 11 October 2007, Pages 1466–1473
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 580, Issue 3, 11 October 2007, Pages 1466–1473
نویسندگان
O. Helene, V.R. Vanin, Z.O. Guimarães-Filho, C. Takiya,