کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
537053 870680 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous coding artifact reduction and sharpness enhancement for block-based compressed images and videos
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
پیش نمایش صفحه اول مقاله
Simultaneous coding artifact reduction and sharpness enhancement for block-based compressed images and videos
چکیده انگلیسی

In this paper, an efficient least mean square (LMS) optimization algorithm based on the ordering of pixels is proposed for simultaneous sharpness enhancement and coding artifact reduction. The pixels in a filter aperture are ordered according to their spatial distances and intensity deviations to the central pixel. The optimized filter coefficients for the ordered pixels are obtained by training on a dataset that is composed of the original images and the compressed blurred versions of the original images. The pixel ordering procedure makes the algorithm more efficient for training and much cheaper in terms of classification than other LMS techniques. Experimental results show the superior performance of the proposed algorithm to the state-of-the-art classification-based techniques.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing: Image Communication - Volume 23, Issue 6, July 2008, Pages 463–470
نویسندگان
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