18 Questions 25 Answers 0 Followers
Questions related from Mohammad Ali Nematollahi
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?
02 February 2018 5,796 9 View
Suppose that three subjects lets say A1, B1, and C1 belong to class 1 and A2 B2, and C2 belongs to class 2. Then, feature extraction is applied on all A1 A2 B1 B2 C1 C2 to extract their...
01 January 2018 5,182 6 View
I would like to compute some factor inside the a boundary. I have the coordinates of this boundary. I must use a rectangle which each iteration is moving though the image. However, I cannot apply...
05 May 2017 1,082 2 View
I know that Laplacian distribution function is defined as follow f(x)=(b/2)*exp(-b|x-\mu|) Also, I know that the mean and variance for the ratio between two normal variables. Anyone can guide how...
07 July 2016 1,813 3 View
I need to compute the absolute moment of a Laplacian distribution. I just see in wikipedia that If X ~ Laplace(0, b) then |X| ~ Exponential(b ^ −1) where for exponential...
07 July 2016 4,482 3 View
I'm working on two-dimensional AR modelling and using the from Matlab. In matlab there is a commend LPC which can compute the LP coefficients. How can I integrate to two dimension for image ? The...
11 November 2015 6,772 4 View
An examiner told me there is a grammatical error in your paragraph but I cannot find it. For BPF attack, the watermarked speech signals werepassed through a BPF with bandwidth of from 100 Hz...
07 July 2015 9,532 3 View
I would like to draw different triangles by using MATLAB. Suppose that I have 3 vectors V1=[1 1 1], V2=[-1 1 1], v3=[-2 -2 -2].How can I draw triangle with these vectors in 3D like attached figure?
01 January 2015 5,775 1 View
Why the LPCs are different from each other without any manipulation? [
11 November 2014 9,838 3 View
What is the meaning of a journal is indexed in ISI thomson journal but without any Impact factor ? For example I can find a journal in http://ip-science.thomsonreuters.com/mjl/ but It does not...
06 June 2014 5,449 4 View
I am confused how shannon is changed to costa scheme. I mean how is B in shannon changed to 1/2 in Costa ? If the audio sampling rate is 22050 Hz and speech is 4000 Hz, can I say audio has 5 times...
04 April 2014 1,037 1 View
I have applied "gaussmix" function in voicebox MATLAB tools to calculate GMM. However, the code gives me error when I run it for 512 GMM components. No_of_Clusters = 512; No_of_Iterations =...
03 March 2014 273 3 View
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...
03 March 2014 8,519 2 View
Can anyone help me how can I write the MATLAB code for calculation of the Mutual information (MI) between two array of double numbers. Someone said that you can use the histogram based...
12 December 2013 5,189 17 View
I have thought that even the feature is increase, the performance increase isn't it? For example if we have color skin, eye and hair, it gives more performance for face recognition than situation...
08 August 2013 9,296 21 View
Could anyone guide me in extracting the time lag between various peaks of one signal in the figure below:
04 April 2013 9,424 21 View
We know that the Probability density function (PDF) of Noise is usually Gaussian. could anyone explain the special statistical features of periodic signal in time or frequency domain ? When I look...
03 March 2013 937 4 View
I have problem with GMM testing. I want to know how we can compute the probability of testing vectors by trained GMMs? Let's ask in other way: do we have to compute the means and covariances of...
03 March 2013 4,352 2 View
