Mohammad Ali Nematollahi

11 Questions 13 Answers 0 Followers

Questions related from Mohammad Ali Nematollahi

How can enclosed edge after image edge detection?

I would like to estimate the built-up area by using image edge detection. However, after detecting the edge inside the image, I need to close the area between the edges. Can anyone gudie?

28 February 2018 7,614 8 View

How can play an audio file with plotting a diagram simultaneously in matlab?

I would like to play an audio file Meanwhile plotting and updating a diagram. However, my audio file is interrupted. I would like to play audio file smoothly in background and update the figure at...

26 July 2017 9,599 1 View

Optimizing a function with some values by matlab?

Suppose that I would like to optimize a fitness function fun = @(x) (x(1)) +(x(2)*100); based on some values for X(1) and...

12 December 2016 6,366 3 View

A simple numerical example for Kneser-Ney Smoothing?

Can anyone make a simple example based on a small database? I need to compute by hand to understand it. I have attached an example. Please explain it with more details for me. Source:...

15 November 2016 129 2 View

Is it possible to have reversible semi-fragile audio watermarking?

I have seen that nobody design a reversible semi-fragile audio watermarking. However, there are many reversible semi-fragile image watermarking specially for medical images. I would like to know...

21 July 2015 7,166 3 View

How do you estimate wavelet packet frequency?

I have attached the figure to understand the frequency arrangement of the wavelet packet. How from {depth=8, index=0}= the approximation boundary is 86? I would like to know if the sampling...

23 October 2014 740 6 View

False positive rate, false rejection rate and false alarm probability?

Is the FRR similar to FPR and FAP? Then, if it is similar, why does different definition for each of them? FRR=(Number of genuine claims)/(Number of genuine accesses)×100% FPR= (number of false...

22 June 2014 5,115 3 View

How to estimate the type of wavelet transform in receiver side?

Suppose that a signal is decomposed by using discrete wavelet transform (DWT) and transmitted. Is it possible for receiver to find which type of wavelet is applied in transmitter side? I mean, if...

06 May 2014 5,273 2 View

Can anyone explain the advantages and disadvantages of discrete wavelet transform vs linear predictive analysis?

27 April 2014 8,873 5 View

Does anyone know of MATLAB code for design filter banks for 100 Hz intervals?

I need to study a wave file for every 100 Hz. but I do not know how I can design a filter for 100 Hz intervals (0-100 Hz, 100-200 Hz, ... , ((fs/2)-100) _ (fs/2) Hz). Is there MATLAB code for...

29 March 2014 7,718 2 View

Signal periodicity measurement - How to compare the periodicity between two signals?

Is there any way to say signal A is more periodic than signal B?

08 February 2014 2,300 19 View