کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4954037 1443127 2017 28 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An improved wavelet-based image coder for embedded greyscale and colour image compression
ترجمه فارسی عنوان
یک رمزگذار تصویر مبتنی بر موجک پیشرفته برای فشرده سازی تصاویر سیاه و سفید و رنگی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
The embedded zero-tree wavelet (EZW) coding algorithm is a very effective technique for low bitrate still image compression. In this paper, an improved EZW algorithm is proposed to achieve a high compression performance in terms of PSNR and bitrate for lossy and lossless image compression, respectively. To reduce the number of zerotrees, the scanning and symbol redundancy of the existing EZW; the proposed method is based on the use of a new significant symbol map which is represented in a more efficient way. Furthermore, we develop a new EZW-based schemes for achieving a scalable colour image coding by exploiting efficiently the interdependency of colour planes. Numerical results demonstrate a significant superiority of our scheme over the conventional EZW and other improved EZW schemes with respect to both objective and subjective criteria for lossy and lossless compression applications of greyscale and colour images.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 73, March 2017, Pages 183-192
نویسندگان
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