I am using MATLAB to apply the Discrete Wavelet Transform on an image. I am applying it several times (3) in order to get a 3 level transform. I am using the dwt2 function provided by MATLAB in ord...

I am comparing FFT vs. CWT for a specific signal. It is not clear to me how to read of the respective frequencies and amplitudes from the corresponding scaleogram of the CWT. Furthermore, I have ...

I have a signal coming from an accelerometer which has already been filtered in the band 0.5-15Hz. I would like to understand in particular how frequencies are distributed in two bands (0.5-3, 3-6)...

I'm working with wavelets on a program and I'm used the package wavelets to create the DWT of a time series using the function dwt. This function returns an object of class dwt, which is a S4 objec...

I want to compute the wavelet of a signal with different scales and timeshifts. In Matlab using the cwt() function (Continuous 1-D wavelet transform) provided in the Wavelet Toolbox I can specify ...

I have an EEG signal that I'm interested in analyzing it in both time and frequency domains. I have already used scipy.signal.spectrogram function, but I think using wavelets can yield better resul...

I have a large sample of .WI images I need to convert to e.g. JPEGs, but the format now seems defunct. The mimetype is image/wavelet. The compression algorithm was developed by Summus, a US compa...

Any idea why pywt.Wavelet() gives an error for certain built-in wavelets? Is there a fundamental (mathematical) reason? pywt.Wavelet(i) exits with ValueError: Invalid wavelet name. for i= '...

I'm currently working on a library to generate synthetic fingerprints using the SFinGe method (by Maltoni, Maio and Cappelli) link :http://biolab.csr.unibo.it/research.asp?organize=Activities&s...

I am currently diving into Wavelets and are a bit confused about certain things. First of all, this is NOT homework. Its for recreational coding only. In order to gain a better understanding, I ...

scipy.signal.cwt's documentation says: scipy.signal.cwt(data, wavelet, widths) wavelet : function Wavelet function, which should take 2 arguments. The first argument is the number of points ...

Main Problem: How can the scipy.signal.cwt() function be inversed. I have seen where Matlab has an inverse continuous wavelet transform function which will return the original form of the data by i...

all. So, I have some time series data that I'd like to process with a wavelet transform to represent thusly. I am relatively new to the concept of wavelets. I noticed scipy.signal has a few objects...

I wrote a program in order to construct a portion of a 3-Band Wavelet Transform Matrix. However, given that the size of the matrix is 3^9 X 3^10, it takes a while for MATLAB to finish constructing ...

Ideally what I'd like to find is something with a simple, straightforward interface to multiple wavelet categories, like the GSL, but which has a license that lets me use it in proprietary so...

I want to ask some questions related to the last question of mine so I don't want to post in another thread. My question contains a code, I therefore can't post it as a comment. So I have to edit m...

Does anyone know of a good C/C++ wavelet library for signal processing? The signal is float or double valued, not int valued.

I have a vector of data, which contains integers in the range -20 20. Bellow is a plot with the values: This is a sample of 96 elements from the vector data. The majority of the elements are si...

I came across this amazing response Applying MATLAB's idwt2 several times which I executed to understand it myself. However, I am unable to get how to use the same with work with an RGB image. So, ...

This may be a question for a different forum, if so please let me know. I noticed that only 14 people follow the wavelet tag. I've here an elegant way of extending the wavelet decomposition in pyw...

I have a degree in computer science and I have taken the following math courses. Calculus I Calculus II Discrete Mathematics and Number Theory Linear Algebra Probability Logic Automata Theory W...

I know that SciPy has some signal processing tools for wavelets in scipy.signal.wavelets and a chart can be drawn using Matplotlib, but it seems I can't get it right. I have tried plotting a Daubec...