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Ba Ba Black Sheep!


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Question


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...

nästan 2 år ago | 2 answers | 0

2

answers

Question


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? ...

nästan 2 år ago | 1 answer | 0

1

answer

Question


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...

ungefär 2 år ago | 0 answers | 0

0

answers

Question


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...

ungefär 2 år ago | 2 answers | 0

2

answers

Question


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? ...

nästan 3 år ago | 1 answer | 0

1

answer

Question


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...

nästan 3 år ago | 1 answer | 0

1

answer

Question


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)', ...

nästan 3 år ago | 2 answers | 0

2

answers

Question


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...

nästan 3 år ago | 1 answer | 0

1

answer

Question


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...

nästan 3 år ago | 1 answer | 0

1

answer

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....

nästan 3 år ago | 1 answer | 0

1

answer

Question


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

nästan 3 år ago | 2 answers | 0

2

answers

Question


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...

nästan 3 år ago | 1 answer | 0

1

answer

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 ...

ungefär 3 år ago | 1 answer | 0

1

answer

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) ...

ungefär 3 år ago | 1 answer | 0

1

answer

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...

ungefär 3 år ago | 1 answer | 0

1

answer

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...

ungefär 3 år ago | 1 answer | 0

1

answer

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...

ungefär 3 år ago | 1 answer | 0

1

answer

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); ...

ungefär 3 år ago | 1 answer | 0

1

answer

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...

mer än 3 år ago | 1 answer | 0

1

answer

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...

mer än 3 år ago | 1 answer | 0

1

answer

Question


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

mer än 3 år ago | 1 answer | 0

1

answer

Question


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

mer än 3 år ago | 1 answer | 0

1

answer

Question


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

mer än 3 år ago | 2 answers | 0

2

answers

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...

mer än 3 år ago | 1 answer | 0

1

answer

Question


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...

mer än 3 år ago | 1 answer | 0

1

answer

Question


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...

mer än 3 år ago | 1 answer | 0

1

answer

Question


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...

mer än 3 år ago | 1 answer | 0

1

answer

Question


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

mer än 3 år ago | 1 answer | 0

1

answer

Question


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); ...

mer än 3 år ago | 2 answers | 0

2

answers

Question


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...

mer än 3 år ago | 2 answers | 0

2

answers

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