Search Results for "wavelet transform"
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Showing 22 open source projects for "wavelet transform"
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libPGF
libPGF is an implementation of the Progressive Graphics File (PGF)
The Progressive Graphics File (PGF) is an efficient image file format, that is based on a fast, discrete wavelet transform with progressive coding features. PGF can be used for lossless and lossy compression. It's most suitable for natural images. PGF can be used as a very efficient and fast replacement of JPEG 2000. -
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VStar
Multi-platform Variable Star Visualisation and Analysis
VStar is a multi-platform, easy-to-use variable star observation visualisation and analysis tool. Data can be read from a file or the AAVSO database, light curves and phase plots created, period analysis performed, and filters applied. Plugins can be developed, e.g. to make additional observation sources available. See also: 1. http://www.aavso.org/vstar-overview 2. http://www.aavso.org/forums/about-aavso/vstar 3. http://dbenn.wordpress.com/category/astronomy-science/vstar 4.... -
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wavelib
C Implementation of Wavelet Transform (DWT,SWT and MODWT)
...For signals of other lengths see MODWT implementation. MODWT/IMODWT Maximal Overlap Discrete Wavelet Transform is another undecimated transform. It is implemented for signals of any length but only orthogonal wavelets (Daubechies, Symlets and Coiflets) can be deployed. This implementation is based on the method laid out in "Wavelet Methods For Wavelet Analysis" by Donald Percival and Andrew Walden. Documentation Available at - https://github.com/rafat/wavelib/wiki -
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wmtsa-python
Discrete wavelet methods for time series analysis using python
Several python libraries implement discrete wavelet transforms. However, none of them, or at least none that I know, is aimed at scientific use. This library aims at filling this gap, in particular considering discrete wavelet transform as described by Percival and Walden. This module started as translation of the wmtsa Matlab toolbox (http://www.atmos.washington.edu/~wmtsa/), so most naming conventions and most of the code structure follows their choices. -
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libdwt
a cross-platform discrete wavelet transform library implemented in C
libdwt is a cross-platform discrete wavelet transform library implemented in C language. The library implements fast wavelet transform algorithm using lifting scheme. Cohen-Daubechies-Feauveau wavelets with 4 vanishing moments were used. -
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WaMoFi
Wa[velet] Mo[tif] Fi[nder]
WaMoFi: Is a method for finding protein motifs using the stored information from statistical contact potentials (aaindex) and the a representation by the continuous wavelet transform. Please use: R 3.1.0 and Matlab 2014 How to use: Just replace the directory and files In the head of the WaMoFi.m script. Then, run it in a matlab console. --dataset: your data set in a fasta file --labels: a file with the label/class per line --percTest: how much of the test will be used for finding the motifs?. ... -
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Fast Matrix for Java
General purpose matrix utilities for Java in Parallel Computing
Fast Matrix for Java (fm4j) is a general-purpose matrix utility library for computing with dense matrices. fm4j encapsulated different underlying implementations and select the optimal one in run-time depending on the size of the input matrix. Moreover, fm4j employs Java (Tm) Concurrency to take advantage of the computation power of multi-cor processors. -
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Implements Lazy Wavelet Transform with Lifting in several variants: 1-D, 2-D, 3-D, integer precision, etc. Sample video compressor, integrated with FFmpeg. OpenCL version is created.
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jpxdec
jpxdec is open-source scanline jpeg2000 decoder library written in C
jpxdec is open-source scanline jpeg2000 decoder library written in C, which utility implements the continuous tone image compression spec, also known as ISO/IEC 15444 (JPEG 2000 Standard). FEATURES: 1. Scan lines decoding and row-based wavelet transform. 2. Use fix-point to achieve high performace. 3. Memmory management support. 4. Stream-based input decoding. 5. Automatically colospace convert support. 6. Support basic 5 progression order.(LRCP,RLCP,RPCL,PCRL,CPRL) http://code.google.com/p/jpxdec/ Email: secular_wheel@163.com -
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ISAD
Individual Synaptic Activity Detection (ISAD)
...It computes synaptic signals from automatically segmented regions of interest and detects peaks that represent vesicle fusion events, thus, pre-synaptic activity. ISAD is based on MWA, which is a continuous wavelet transform based algorithm that employs multiple wavelets and is published as: Sokoll, S., Tönnies, K., and Heine, M. Detection of Spontaneous Vesicle Release at Individual Synapses Using Multiple Wavelets in a CWT-Based Algorithm. Med Image Comput Comput Assist Interv (MICCAI). 2012;15(Pt 1):165-72 ISAD is written in MATLAB and comes with a graphical user interface. -
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DyadWaves is an easy to use Windows/Linux GUI for 1D and 2D Wavelet Transform. This software is pretty basic with functionality consisting of Wavelet Transform computation, signal/image approximation and denoising using up to three transform modes.
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1D/2D Discrete Wavelet Transform fully programmed in Python+Numpy. Homepage : http://wavepy.sourceforge.net
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This wavelet library implements the 1D wavelet transform of matlab wavelet toolbox with c++. It aims to supply an easy-to-use, portable and efficient wavelet toolbox to those who are used to the matlab wavelet interface.
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wxMorlet implements the new algorithm (see "Documentation") for the computation of the continuous wavelet transform with the Morlet wavelet. wxMorlet calculates it as a numerical solution of the proper PDE and represents the results in a graphical form
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A library written in C for lossy image compression. Library libopen/format OPEN supports two methods of compression - discrete cosine transform (used in JPEG) and discrete wavelet transform (used in JPEG2000).
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Clean implementation (in ANSI-C) of the Wavelets Transform. It works fairy good as a sparser, which can be combined with a compression algorithm (by using programs like bzip and gzip) to achieve high compression ratios (as good as mp3's).
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Wavelet Transform Spectrum Analyzer: a tool for analyzing the power spectrum of a signal (typically from a photon-counting device) by using an external board, with a Digital Signal Processor outside the CPU.
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A command-line tool for applying the continuous wavelet transform with respect to predefined wavelets to sampled data.
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Image recognition program for granulometry analysis. Based on wavelet transform and levelset method.
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cross wavelet transform and wavelet coherence for examining relationships in time frequency space between two time series
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