DocumentCode :
493435
Title :
The Directional Adaptive Red-Black Wavelet Transform for Image Coding
Author :
Zhao, Xiujuan ; Wang, Shengqian ; Deng, Chengzhi ; Zhang, Lin
Author_Institution :
Key Lab. of Opt.-Electron. & Commun., Jiangxi Sci. & Technol. Normal Univ., Nanchang
Volume :
1
fYear :
2009
fDate :
7-8 March 2009
Firstpage :
148
Lastpage :
152
Abstract :
We present a novel 2-D directional adaptive red-black wavelet transform (DA-RBWT). This approach uses three or four pixels to adaptively predict the value of middle pixel according to the correlation among its neighboring pixels. Compared to red-black wavelet transform (RBWT) on a rectangular grid, DA-RBWT shows more directions for its adaptability to local image features, especially for the regions of edges and textures. Experimental results show that DA-RBWT outperforms conventional RBWT in the application of image coding in PSNR. The construction from the DA-RBWT better represents the structure in the image and is visually more pleasing.
Keywords :
image coding; image texture; wavelet transforms; directional adaptive red-black wavelet transform; image coding; image textures; local image features; Adaptive optics; Computer science; Computer science education; Discrete transforms; Discrete wavelet transforms; Educational technology; Finite impulse response filter; Image coding; Laboratories; Wavelet transforms; directional adaptive lifting; image coding; lifting wavelet transform; prediction; red-black wavelet transform;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Education Technology and Computer Science, 2009. ETCS '09. First International Workshop on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-1-4244-3581-4
Type :
conf
DOI :
10.1109/ETCS.2009.42
Filename :
4958745
Link To Document :
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