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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...

plus de 7 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? ...

plus de 7 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...

plus de 7 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...

presque 8 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? ...

plus de 8 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...

plus de 8 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)', ...

plus de 8 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...

plus de 8 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...

plus de 8 ans il y a | 1 réponse | 0

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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....

plus de 8 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...

plus de 8 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...

plus de 8 ans il y a | 1 réponse | 0

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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 ...

presque 9 ans il y a | 1 réponse | 0

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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) ...

presque 9 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...

presque 9 ans il y a | 1 réponse | 0

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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...

presque 9 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...

presque 9 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); ...

presque 9 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...

environ 9 ans il y a | 1 réponse | 0

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

environ 9 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; ...

environ 9 ans il y a | 1 réponse | 0

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Question

Edge detection error message
Why isn't the following code working? >> str=sprintf('Scratch1.jpg'); >> img_ORG = imread(str); >> fsc = edge(img_OR...

environ 9 ans il y a | 1 réponse | 0

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Question

Image enhancement MATLAB code.
% Adjust image intensity values or colormap. f = imadjust(uint8(scratched_image), stretchlim(scratched_image), [0 1]); ...

environ 9 ans il y a | 1 réponse | 0

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Question

Convolution of a color image to itself.
'Untitled.png' is a color image of 48x48 size. >> i = imread('Untitled.png'); >> v = i(:); >> c = conv2(v, v); War...

plus de 9 ans il y a | 1 réponse | 0

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plus de 9 ans il y a | 1 réponse | 0

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Error using besselj. NU and Z must be the same size or one must be a scalar.
What is wrong with the following program? Z = (0:0.2:9)'; NU = 0:5; y = besselj(NU, Z); % Bessel function plo...

plus de 9 ans il y a | 1 réponse | 0

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Optimization is generating error plotting pareto front
The following code is generating the following error, >> main Optimization terminated: average change in the spread of P...

plus de 9 ans il y a | 1 réponse | 0

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Multi objective optimization of a 2D function.
I need to optimize the following function, <</matlabcentral/answers/uploaded_files/67093/Untitled.png>> . I have writte...

plus de 9 ans il y a | 1 réponse | 0

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Finding Pareto Front of Shaffer's 2nd function.
I couldn't understand what was wrong with the following code of mine, *|main.m|* x = -5:0.1:5; y = schaffer2(x); ...

plus de 9 ans il y a | 2 réponses | 0

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Objective function vs fitness function.
What is the difference between an Objective Function and a Fitness Function? Are Objective Functions only used in Linear Prog...

plus de 9 ans il y a | 2 réponses | 0

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