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Last seen: fast 4 Jahre vor Aktiv seit 2016

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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...

fast 6 Jahre vor | 2 Antworten | 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? ...

fast 6 Jahre vor | 1 Antwort | 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...

fast 6 Jahre vor | 0 Antworten | 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...

etwa 6 Jahre vor | 2 Antworten | 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? ...

fast 7 Jahre vor | 1 Antwort | 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...

fast 7 Jahre vor | 1 Antwort | 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)', ...

fast 7 Jahre vor | 2 Antworten | 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...

fast 7 Jahre vor | 1 Antwort | 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...

fast 7 Jahre vor | 1 Antwort | 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....

fast 7 Jahre vor | 1 Antwort | 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...

fast 7 Jahre vor | 2 Antworten | 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...

fast 7 Jahre vor | 1 Antwort | 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 ...

fast 7 Jahre vor | 1 Antwort | 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) ...

etwa 7 Jahre vor | 1 Antwort | 0

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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...

etwa 7 Jahre vor | 1 Antwort | 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...

etwa 7 Jahre vor | 1 Antwort | 0

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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...

etwa 7 Jahre vor | 1 Antwort | 0

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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); ...

etwa 7 Jahre vor | 1 Antwort | 1

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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...

mehr als 7 Jahre vor | 1 Antwort | 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...

mehr als 7 Jahre vor | 1 Antwort | 0

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

mehr als 7 Jahre vor | 1 Antwort | 0

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

mehr als 7 Jahre vor | 1 Antwort | 0

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

mehr als 7 Jahre vor | 1 Antwort | 0

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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...

mehr als 7 Jahre vor | 1 Antwort | 0

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Why is the colormap not working as expected?
In the following program *|cellImage|* and *|spineImage|*, both are being displayed in *|jet|*. One of them should be gray an...

mehr als 7 Jahre vor | 1 Antwort | 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...

mehr als 7 Jahre vor | 1 Antwort | 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...

mehr als 7 Jahre vor | 1 Antwort | 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...

mehr als 7 Jahre vor | 1 Antwort | 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); ...

mehr als 7 Jahre vor | 2 Antworten | 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...

mehr als 7 Jahre vor | 2 Antworten | 0

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