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1d Convolution using Matlab's conv() function
According to the documentation(https://www.mathworks.com/help/matlab/ref/conv.html), len(output) = len(input) + len(kern...

environ 6 ans il y a | 2 réponses | 0

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Can anyone explain this output of 1d conv() function?
>> u = [1 2 3]; >> v = [1 2 3]; >> w = conv(u, v) w = 1 4 10 12 9 >> Can anyone explain this output? ...

environ 6 ans il y a | 1 réponse | 0

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Why is this Gaussian function has nonconformant arguments error?
function m=gaussian(med, var, n) if ( mod(n, 2)==0 ) n=n+1; end; med=double(med); var=double(var); m...

environ 6 ans il y a | 1 réponse | 0

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2D convolution in in Matlab.
I = imread ("lena.jpg"); %imshow(I); K = I; C = conv2(I, K); imshow(C); I am expecting something like the follo...

plus de 6 ans il y a | 2 réponses | 0

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Explanation of source code written in Matlab
What does the following function accomplish? Can anyone tell me what the following code is doing and how is it doing that? ...

environ 7 ans il y a | 1 réponse | 0

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How do I know when to use loops and when to use vectorization?
In *<https://www.mathworks.com/matlabcentral/answers/359415-how-can-i-convert-matrix-to-cell-array-of-strings this question>*, t...

environ 7 ans il y a | 1 réponse | 0

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How can I convert matrix to cell array of strings?
I want to convert the following: mat = [1 2 3; 4 5 6 ; 7 8 9]; into the following array of strings, arr = {'1,2(3)', ...

environ 7 ans il y a | 2 réponses | 0

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What does the following code do?
If we have, [row_num, col_num] = size(img); What does the following code do? function length_vec = compute_angular_l...

environ 7 ans il y a | 1 réponse | 0

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Is this the proper way of using ListBox?
I am learning Matlab GUI programming. I have written the following basic program to test ListBox GUI control. The following p...

environ 7 ans il y a | 1 réponse | 0

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Question

what is repmat() doing in the following code?
function handles = Open_Image(hObject, eventdata, handles, type, axesIm) % if the file-name and path-name are not epty....

environ 7 ans il y a | 1 réponse | 0

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hslider=findobj('Tag', 'xText') returns 0x0 empty GraphicsPlaceholder array.
>> SliderTool >> hslider=findobj('Tag', 'xText') hslider = 0x0 empty GraphicsPlaceholder array. >> Why is t...

environ 7 ans il y a | 2 réponses | 0

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Undefined operator '*' for input arguments of type 'matlab.ui.control.UIControl'.
The following function is giving an error, function tf = GUI_ListBoxAdd(vH, bUni, vStr, vID); % Add an entry to a GUI li...

environ 7 ans il y a | 1 réponse | 0

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Question

How can I eliminate as many loops as possible from the following code?
The following source code uses 4 loops at a time. My program is deadly slow. *How can I eliminate as many loops as possible ...

plus de 7 ans il y a | 1 réponse | 0

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Question

How can I vectorize the following code?
*main.m* I = imread('bear.png'); J = rgb2gray(imread('marked_bear.png')); mask = I-J; for r=1:size(I,1) ...

plus de 7 ans il y a | 1 réponse | 0

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Question

Showing multiple images in one window in Matlab
Why doesn't the following code show the images? clear all; image_name = 'woman.png'; I = gray_imread(image_nam...

plus de 7 ans il y a | 1 réponse | 0

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Question

How can I reduce the space between images?
The following source code has three problems: # it can't show only one image. # it doesn't preserve the original aspect rati...

plus de 7 ans il y a | 1 réponse | 0

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Question

Drawing a white line on an image using (rho, theta).
I want to draw a line on the following image using |(| |rho| |,| |theta| |)| of the detected line using the Hough transformation...

plus de 7 ans il y a | 1 réponse | 0

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Question

Finding the angle of inclination from two end points of a line.
<</matlabcentral/answers/uploaded_files/80859/Scratch1.png>> point1 = [22, 114]; point2 = [693, 233]; x1 = point1(1); ...

plus de 7 ans il y a | 1 réponse | 1

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Question

Hough Transform source code explanation
I couldn't understand the following code's *|for|* loop. What is the purpose of the for loop here? Why is *|for|* iterati...

plus de 7 ans il y a | 1 réponse | 0

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Question

Why is empty string test failing?
<</matlabcentral/answers/uploaded_files/75690/Untitled.png>> . This GUI's source code is giving me error message: func...

plus de 7 ans il y a | 1 réponse | 0

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Question

Image processing code explanation.
lambda = 4;%8 theta = 0; psi = [0 pi/2]; gamma = 0.5; bw = 1; N = 12; ...