作者
Fairoza Amira Binti Hamzah, Taichi Yoshida, Masahiro Iwahashi
发表日期
2017/3/5
研讨会论文
2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
页码范围
1148-1152
出版商
IEEE
简介
The Wavelet Transform (WT) in JPEG 2000 is using a 'separable' lifting structure, where the one-dimensional (1D) transform is put into multidimensional image signal of its spatial and temporal dimensions. A 'non-separable' three-dimensional (3D) structure as the existing method is used to minimize its lifting steps. The 'non-separable' 3D structure in the (5,3) type transform for lossless coding is proved to reduce the rounding noise inside it. However, in the (9,7) type transform for lossy coding, the rounding noise inside the 'non-separable' 3D structure has increased. This paper proposed a new 'non-separable' two-dimensional (2D) structure for integer implementation of a four-dimensional (4D) quadruple lifting WT. Since the order of the original lifting step is preserved, the total amount of the rounding noise observed in pixel values of the decoded image is significantly reduced, and the lossy coding performance for …
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