A new discrete trigonometric transform called the scrambled real discrete Fourier transform (SRDFT) is developed for transform coding of images. SRDFT has basically the same visual performance and minimal edge-effect artifacts as the discrete cosine transfrm (DCT0. In addition, SRDFT has much ...
Transform coding of images : by R.J. Clarke, Department of Electronic and Electrical Engineering, University of Technology, Loughborough, United Kingdom, in: Microelectronics and Signal Processing (Series editors P.G. Farrell and J.R. Forest). Publisher: Academic Press, Inc., London, United ...
In this paper, we present a new kind of transform coding technique for digital images or video signals by use of hierarchical iterations. Two coding algorithms are given based upon linear transformations which are not explicit but cna be otained by dilating and translating a fundamental 2x2 matri...
# coding :UTF-8 # 文件功能: 代码实现常用Transforms的功能 # 开发人员: dpp # 开发时间: 2021/8/11 11:58 上午 # 文件名称: Use_of_Transforms.py # 开发工具: PyCharm from PIL import Image from torch.utils.tensorboard import SummaryWriter ...
The discrete cosine transform is highly suitable for transform coding of images. The main reason is that the decorrelation property of the DCT is almost as good as for the optimal transform, the Karhunen–Loéve transform (1947), but the DCT is much simpler from a computational point of view...
This work comprises a new intraframe compression technique which combines a classification algorithm and a transform coding to obtain significantly higher compression ratios than obtained by transform coding alone. Some results obtained by the scheme are presented and their evaluation is discussed....
According to the structure properties of the MCWT coefficients, a new spatial orientation tree is developed to perform the SPIHT-like coding algorithm based on SPIHT coding idea of wavelet transform. Experimental results demonstrate that the proposed algorithm is competitive to wavelet transform, ...
Transform coding at low bit rates typically introduces artifacts associated witht he basis functions of the transform. In particular, the method works remarkably well in "deblocking" of DCT compressed images. The method is nonlinear, computationally efficient, and spatially adaptive and has the ...
The discrete cosine transform is highly suitable for transform coding of images. The main reason is that the decorrelation property of the DCT is almost as good as for the optimal transform, the Karhunen–Loéve transform (1947), but the DCT is much simpler from a computational point of view...
Field of Search: 382/250, 382/232, 375/240, 382/238, 382/248 View Patent Images: Download PDF 7646813 US Patent References: 6385247Encoding circuit for transform coding of a picture signal and decoding circuit for decoding said signal2002-05-07De With et al.375/240.2 ...