# Robert

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Question

How to save a processed video file?

Hi, I need your help! The following last line displays a video in a specific location of my GUI written in Matlab. VD(frame,su...

10 days ago | 0 answers | 0

### 0

answersQuestion

How to create grid coordinates using elements of two matrices

Can you help? I have a situation like this: How can I use the elements of the above two matrices to create a new grid coordin...

25 days ago | 2 answers | 0

### 2

answersQuestion

manually-written floor function code for rounding non-integers

Hi, I need your help. See what I get when I used edit to view the steps involved into the floor function. It is a built-in fu...

4 months ago | 3 answers | 0

### 3

answersQuestion

Extract email information from webpages/URLs using Matlab

Hi, I do need your help. When I run the code, K gives 143 empty cells. In other words, K does not contain any email. I tried t...

5 months ago | 1 answer | 0

### 1

answerQuestion

Seamlessly appending a new video at the end of an old video using Matlab

Hi, I need your help! I want to SEAMLESSLY append video2 (of 5 min) at the end of video1 (of 34 min) to create video3 (of 39 mi...

7 months ago | 0 answers | 0

### 0

answersQuestion

Reconstructing a 3D Surface from a 2D Surface using Mesh surface plot in Matlab

Hi, I am not good at this and I need your help to display a 3D RGB or true color surface from a 2D or single image surface usin...

9 months ago | 1 answer | 0

### 1

answerQuestion

U-net LayerGraph Properties in Matlab

Hi everyone! I have a small question (see below) ans = LayerGraph with properties: Layers: [...

1 year ago | 0 answers | 0

### 0

answersQuestion

The U-net training in progress plot/figure has been accidentally closed

Hi, I was doing some data training using Matlab and accidentally closed the U-net 'training in progress' plot/figure. How can ...

1 year ago | 0 answers | 0

### 0

answersQuestion

CNN Deep learning: Data size Vs Iteration per epoch

I need your help to understand why the "data size" affects the number of "iteration per epoch". See below A and B. ...

1 year ago | 0 answers | 0

### 0

answersQuestion

extract the region of interest in a color image

I would like to change image A into image B using Matlab. I only need that specific region, shown in B, located between green an...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to increase the number and size of U-net layer in Matlab?

Dear Researchers, I would like to know how to increase the number of U-net layers and size of U-net layers. With reference to t...

1 year ago | 1 answer | 0

### 1

answerQuestion

MATLAB R2018a has stopped working when I try to bring live images from a webcam into Matlab

I need your help to find a solution. I am using 'MATLAB R2018a - academic use'. When I try to bring live images from a (laptop ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Bicubic interpolation direct interpolation formula Matlab source code

Can anyone help by sharing the source code of the bicubic image interpolation algorithm using/involving 'direct interpolation fo...

3 years ago | 1 answer | 0

### 1

answerQuestion

Creation of double columns whose max size is 2 x 2 from a matrix whose size is n>2 x n>2 ( e.g. with n max = 800)

I need your help. Here is an example of what I want to do: B = [1 2 3; 4 5 6; 7 8 9] [m,n] = size(B); B(m-2:m-1, n...

4 years ago | 1 answer | 0

### 1

answerQuestion

How to find the sum of all column vectors of the elements on the kth diagonal of a square matrix in Matlab ?

Hello, sir/madam. I need your help to find a solution to the following case. n = 3; A = magic(n) B = diag(diag(A,0))...

5 years ago | 2 answers | 0

### 2

answersQuestion

Sum of array elements at 45° degree oblique dimension in Matlab

Hello everyone! I need your help! Can anyone tell me how to find the sums (in red) of magic(3) array elements at 45° degre...

5 years ago | 1 answer | 0

### 1

answerThe Bilinear Interpolation Embedded Matlab Function Vs Bilinear Interpolation 'Re-Written or Coded' Function

The following script produces the result similar to the result produced by the Matlab embedded bilinear function: function ...

5 years ago | 2

| accepted

Question

The Bilinear Interpolation Embedded Matlab Function Vs Bilinear Interpolation 'Re-Written or Coded' Function

Hello everyone! I have a question. Can you please help me to understand why the embedded matlab function of the bilinear inte...

5 years ago | 3 answers | 0

### 3

answersQuestion

A question about different image size generation using Matlab

Hello everyone! I need your help! Can anyone please tell me why, the Y1 becomes empty and its size changes when I input a tru...

5 years ago | 1 answer | 0

### 1

answerI want to overwrite some specific border lines in Matlab, can anyone help ?

A = magic(4) B = circshift(A,[1 1]) C = padarray(B(2:end,2:end),[1 1],'replicate','pre')

5 years ago | 0

| accepted

Question

I want to overwrite some specific border lines in Matlab, can anyone help ?

Hello! I have a situation like this: <</matlabcentral/answers/uploaded_files/53744/Q1.png>> And, I want to use the enc...

5 years ago | 1 answer | 0

### 1

answerQuestion

Can you please help to find out why I am obtaining a negative PSNR value in the following Matlab code ?

Dear Experts, I am getting a negative PSNR value with the following Matlab code. Can you please help ? % main program t...

5 years ago | 0 answers | 0

### 0

answersQuestion

What is an alternative FIND function that find indices and values of both ZERO and NONZERO elements in Matlab ?

Hello, I am using Matlab and I would like to know how to find indices/values of both *zero* and *nonzero* elements of a given...

5 years ago | 2 answers | 0

### 2

answersQuestion

In an assignment A(:) = B, the number of elements in A and B must be the same

Can you please help me to correct the above mentioned problem in the following matlab code ? E = [5,200]; Selected edge va...

6 years ago | 1 answer | 0

### 1

answerQuestion

How to set conditions to modify the pixel values: (1) at the right(x+1,y)-and-left (x-1,y); and (2) at the top (x,y-1)-and-bottom (x,y+1) with reference to the central pixel (x,y)

Hello! I need your help to 'conditionally' modify the pixels around an arbitrary selected point/pixel at (x,y) using Matlab. ...

6 years ago | 1 answer | 0

### 1

answerQuestion

Can anyone help me to find out why I can't replace pixel values at (x, y-1) and (x+1, y) with the value at (x, y) ?

I am using Matlab and I need your help! Assume that the 8 neighbors of the location (x,y) are: top-left (x-1,y-1); top-...

6 years ago | 1 answer | 0

### 1

answerQuestion

HELP : Subscript indices must either be real positive integers or logicals - AGAIN

I need your help to solve the problem of subscript index that must either be positive integer or logical. Can any one help to co...

6 years ago | 1 answer | 0

### 1

answerQuestion

Can anyone explain why the empty or black holes (or squares) disappear as I add more products (of the weighting function-Wx and pixels values - Nx) in the Y(i,j) sum ?

Hello, I do need your help! Here's the source code that does the bilinear interpolation: _I = imread('LENNA128.bmp'); ...

6 years ago | 0 answers | 0

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answersQuestion

I need your help to add a legend to a graph showing two functions labels with different colors

When I ran the following code in Command Window, I get a legend but with only blue color for e1 and e2 functions. In other words...

6 years ago | 0 answers | 0