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Unique RGB colors for segmentation

Hi , I have an image. This image was generated by a segmentation artifact. Each geometric region has a color. I need to use th...

6 months ago | 1 answer | 0

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answerQuestion

gradient descent for custom function

I have four equations: 1) e = m - y 2) y = W_3 * h 3) h = z + W_2 * z + f 4) f = W_1 * x I want to update W_1, W_2 and W...

6 months ago | 1 answer | 0

### 1

answerQuestion

Plot sequence of images on top of a trajectory

I have a a 3D array G that has frames of a ball moving. I also have a variable named traj, that gives me the coordinates of the ...

7 months ago | 1 answer | 0

### 1

answerQuestion

Find frequency of words from different books

I have a cell array of data collected from 5 different books This is one of the cell arrays. It gives me the count of each w...

7 months ago | 1 answer | 0

### 1

answerQuestion

Transform coordinates into pixel

Hi .. I am generating an animation of two eliptical trajectories. The animation have 100 timesteps and for each timestep, I po...

8 months ago | 1 answer | 0

### 1

answerQuestion

remove DC component of real time signal

I am using a interface for acquiring a signla in matlab. The signal is sampled at 500Hz. I have to remove the DC component in r...

12 months ago | 1 answer | 0

### 1

answerQuestion

Zero detection in online signal

Hi.. I am acquiring a signal from an EEG from a matlab script. I know approximatly the frequency of the signal (0.5Hz to 4 Hz)....

12 months ago | 1 answer | 0

### 1

answerQuestion

detect troughs (minimum) of a signal to fire an action. (the signal is being acquired online)

Hi.. I am acquiring a signal from an EEG. I know approximatly the frequency of the signal. I need to play a sound when the sig...

1 year ago | 1 answer | 0

### 1

answerQuestion

sound normalization made distortion bigger

Hi.. I normalized some wav files using the following code. The reason to normalize is that I need the sound to have the same pow...

1 year ago | 1 answer | 0

### 1

answerQuestion

Adjacency matrix with periodic boundaries

I have a 2-dimensional square lattice of nodes . I need to find the distance between the nodes (adjacency matrix), but I should...

1 year ago | 1 answer | 0

### 1

answerQuestion

What stat test to use for improved task?

I have an experiment where a group of subjects have to learn to associate some sounds to images (day, sound 1-image 1, sound2 -i...

1 year ago | 1 answer | 0

### 1

answerQuestion

Pink noise with specific power P

I need to generate pink noise signal with a specific power P. I can't figure it out on how to do that using the built-in functio...

1 year ago | 1 answer | 0

### 1

answerQuestion

Generate pinknoise with same power as audio

I need to read an audio file and generate a pinknoise with the same power. I tought using generatepinknoise(), but the built...

1 year ago | 1 answer | 0

### 1

answerQuestion

Nonlinear Regression using a gaussian in a lattice

I have a system of equations where the relationship between input and output is derived from a pixel lattice: where and s...

1 year ago | 1 answer | 0

### 1

answerQuestion

shuffling phases of fft when length is odd

I need to make an audio signal unrecognizable but maintain its rms value. I tought about randomizing the phases. However, my co...

1 year ago | 1 answer | 0

### 1

answerQuestion

Matrix power vs for loop

Hi. I have to iterate a linear system of the type x(k+1) = Ax(k), with x being a vector of 1024 elements. I only care about th...

1 year ago | 2 answers | 0

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answersQuestion

Least Squares with constraint on absolute value

Hi , I need to solve a least squares values of the form , where x is a 32x1 vector and B is a 32x32 matrix. Howerver, x is co...

1 year ago | 2 answers | 0

### 2

answersQuestion

Euller method to solve mackey glass system

In my understanding , dt needs to be very small so that the Euller method works. I am solving the mackey glass equation dx(t...

1 year ago | 1 answer | 0