کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6938322 1449925 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design of linear-phase nonsubsampled nonuniform directional filter bank with arbitrary directional partitioning
ترجمه فارسی عنوان
طراحی خط فیلتر فاز غیر خطی غیر خطی با استفاده از پارتیشن بندی جهت دلخواه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
چکیده انگلیسی
In this paper, we propose a design method for linear phase (LP) nonsubsampled nonuniform directional filter bank (NUDFB) with arbitrary number of subbands and arbitrary directional partitioning. The proposed NUDFB is simply designed by windowing the analytical expressions of wedge-shaped filters in space domain. The direction and angular bandwidth of the filters are determined by only two angular parameters. It can extract directional information according to the directional distribution of images, making it efficient in the directional representation of images. In addition, the perfect reconstruction conditions are derived. Numerical experiments on image directional information extraction and image denoising are given to illustrate the performance of our NUDFB. The results show that our NUDFB outperforms various directional decomposition methods while possesses LP property and more flexibility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Visual Communication and Image Representation - Volume 51, February 2018, Pages 23-28
نویسندگان
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