Title :
Embedded quadtree-based image compression in DCT domain
Author :
XingSong, Hou ; Guizhong, Liu ; YiYang, Zou
Author_Institution :
Sch. of Electr. & Inf. Eng., Xi´´an Jiaotong Univ., China
Abstract :
The success in discrete cosine transform(DCT) image coding is mainly attributed to recognition of the importance of data organization and representation. In this paper, we proposed an embedded image coder based on quadtree set partition in DCT domain (EZDCT) which is suitable for many kinds of DCT coefficients reorganization schemes. The experimental results show that it is among the state-of-the-art DCT-based image coders when compared with the famous DCT-based image coders, such as EZDCT and MRDCT. For example, for the Barbara image, EQDCT outperforms JPEG EZDCT and MRDCT by 3.3,1.71,1.70 dB in peak-signal-to-noise ratio at 0.25 bpp, respectively.
Keywords :
data compression; data structures; discrete cosine transforms; image coding; quadtrees; transform coding; DCT coefficients reorganization; DCT-based image coders; EQDCT; EZDCT; JPEG; MR.DCT; MRDCT; PSNR; data organization; data representation; discrete cosine transform; embedded image coder; embedded quadtree-based image compression; peak-signal-to-noise ratio; quadtree set partition; Computational efficiency; Data engineering; Discrete cosine transforms; Discrete wavelet transforms; Educational programs; Image coding; Image recognition; PSNR; Spine; Transform coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on
Print_ISBN :
0-7803-7663-3
DOI :
10.1109/ICASSP.2003.1199226
