کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
565115 875674 2006 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Image compression by linear splines over adaptive triangulations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Image compression by linear splines over adaptive triangulations
چکیده انگلیسی

This paper proposes a new method for image compression. The method is based on the approximation of an image, regarded as a function, by a linear spline over an adapted triangulation, D(Y)D(Y), which is the Delaunay triangulation of a small set Y   of significant pixels. The linear spline minimizes the distance to the image, measured by the mean square error, among all linear splines over D(Y)D(Y). The significant pixels in Y are selected by an adaptive thinning algorithm, which recursively removes less significant pixels in a greedy way, using a sophisticated criterion for measuring the significance of a pixel. The proposed compression method combines the approximation scheme with a customized scattered data coding scheme. We compare our compression method with JPEG2000 on two geometric images and on three popular test cases of real images.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 86, Issue 7, July 2006, Pages 1604–1616
نویسندگان
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