Results 151 to 160 of about 11,364 (194)
Some of the next articles are maybe not open access.
The Double-Density Dual-Tree DWT
IEEE Transactions on Signal Processing, 2004This paper introduces the double-density dual-tree discrete wavelet transform (DWT), which is a DWT that combines the double-density DWT and the dual-tree DWT, each of which has its own characteristics and advantages. The transform corresponds to a new family of dyadic wavelet tight frames based on two scaling functions and four distinct wavelets.
openaire +1 more source
An Efficient Implementation of a 2D DWT on FPGA
2007 International Conference on Field Programmable Logic and Applications, 2007This paper presents a high-speed implementation of a 2-D fixed-point discrete wavelet transform (DWT) using the embedded DSP48 blocks available on a Xilinx Virtex-4 XC4VLX15-10 FPGA. The full transform uses just 10 DSP48 blocks, 3 block RAMs and 2,126 logic elements when synthesized using Xilinx ISE Version 8.2i and can perform calculations at 197.2 ...
Michael Wisdom, Peter Lee 0002
openaire +1 more source
SELF RECOVERY AUTHENTICATION OF IMAGES IN THE DWT DOMAIN
International Journal of Image and Graphics, 2005The interest for multimedia contents authentication has recently increased. In particular watermarking-based authentication schemes seem to be offering some advantages with respect to classical cryptography tools (e.g. real content authentication, localization of manipulations, storage format independence, transparency to common signal processing, etc.
PIVA, ALESSANDRO +2 more
openaire +2 more sources
An Efficient Architecture for a Lifted 2D Biorthogonal DWT
Journal of VLSI signal processing systems for signal, image and video technology, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mehboob Alam +3 more
openaire +1 more source
A Reconfigurable VLSI Structure for DWT
2009 First International Conference on Information Science and Engineering, 2009DWT has been the main algorithm of image compression, such as in JPEG2000.This paper propose a VLSI structure to perform line-based DWT using lifting scheme. We use this mean to achieve 1D and 2D DWT, examination results show this structure is simple and efficient.
Qi Hong +3 more
openaire +1 more source
DWT-Based Segmentation Method for Coronary Arteries
Journal of Medical Systems, 2014This work presents a new method for segmenting coronary arteries automatically in computed tomography angiography (CTA) data sets. The method automatically isolates heart and coronary arteries from surrounding structures and search for the probable location of coronary arteries by 3D region growing.
Shuo-Tsung Chen +6 more
openaire +2 more sources
ACM Transactions on Embedded Computing Systems, 2012
Many modern computing applications have been enabled through the use of real-time multimedia processing. While several hardware architectures have been proposed in the research literature to support such primitives, these fail to address applications whose performance and resource requirements have a dynamic aspect.
Amit Pande, Joseph Zambreno
openaire +1 more source
Many modern computing applications have been enabled through the use of real-time multimedia processing. While several hardware architectures have been proposed in the research literature to support such primitives, these fail to address applications whose performance and resource requirements have a dynamic aspect.
Amit Pande, Joseph Zambreno
openaire +1 more source
Watermarking Algorithm based on the DWT
IEEE Latin America Transactions, 2006Watermarking is considered as a desirable alternative for copyright protection of digital materials such as images, video and audio. Two kinds of watermarking algorithms are usually used: the watermarking algorithms using pseudorandom patterns and those using visual recognizable patterns. The main advantage of watermarking algorithms embedding a visual
Victor Hernandez-Guzman +3 more
openaire +1 more source
Textures classification based on DWT
2018 28th International Conference Radioelektronika (RADIOELEKTRONIKA), 2018Nowadays classification of textures is very actual. Classification means separation of textures into classes. The main task of the classification is to find such a descriptor which is unique for the given class. This article deals with the classification based on energies distributed into DWT subimages.
Ondrej Kovac +2 more
openaire +1 more source
DWT-based error concealment techniques
Proceedings DCC 2002. Data Compression Conference, 2003Summary form only given. This paper describes an adaptive error recovery technique for a DWT-based coding and transmission system, which recovers singularity information as well as continuity. The approach provided in this paper not only interpolates from the boundary, but also maintains the sharpness in background instead of smoothing the ...
openaire +1 more source