A Superior Algorithm for Resizing Images by using the Subband DCT

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Title:	A Superior Algorithm for Resizing Images by using the Subband DCT
Authors:	謝曜式 Shieh, Yaw-Shih
Contributors:	電子工程學系 Electronics Engineering
Keywords:	影像尺寸;離散餘弦轉換;子頻帶離散餘弦轉換 image resizing;discrete cosine transforms;DCT;subband DCT
Date:	2008
Issue Date:	2014-07-01 10:27:23 (UTC+8)
Abstract:	在許多實際應用中，為了滿足傳輸通道和終端顯示設備的要求，需要改變影像的尺寸。近年來，影像縮放演算法在壓縮領域引起了對計算效率的關注。在本論文中，高效率的影像縮放演算法以離散餘弦轉換為基底，而離散餘弦轉換(DCT)在JPEG編碼標準中有著廣泛的應用。在傳統的DCT演算法中，N點的DCT係數，可以表示為N/2點DCT與N/2點DST(離散正弦轉換)，以改進DCT計算的複雜性與效率。 Image resizing is widely demanding in various applications such as image transmissions in the computer network and image display for the different resolution of display devices. The subband DCT (discrete cosine transforms) is a multiple-resolution struct
Appears in Collections:	[Department of Microelectronics] Journal Articles

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