Question

How can I modify the code to count the number of particles leaking from the white sand pile? The video is Dune video 1.zip.
MATLAB CODE: %% Slider Effect in a Video % This example shows how to create the slider effect in a video. One part % of it...

3 years ago | 0 answers | 0

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Question

Hello everyone. For example, how to identify a specific point in an image in a moving video as follows. The required video is also uploaded in zip format. If you are interested, you can discuss with me. Thank you all very much.
The video screenshot is as follows：

3 years ago | 2 answers | 0

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Question

Hello everyone, I would like to ask a question. The question is as follows: how to draw a five-pointed star and a square on a point.
MATLAB code： x=[25 30 35 40 45 50 55]; y1=[3.48 3.42 3.32 3.28 3.1 2.93 2.88]; y2=[12.5 13.4 14.3 15.2 17.1 17.9 18.5]; hold...

3 years ago | 1 answer | 0

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Question

Hello everyone. I have a long-standing problem, how to calculate the similarity between the two curves that have been fitted. Thank you for your enthusiastic answers.
corrcoef(f1,f2) corr2(f1,f2)

3 years ago | 0 answers | 0

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Question

I have encountered a problem and would like to ask everyone to help solve it. The problem to be solved is how to close the following two fitted curves. Thank you very much for your enthusiastic answers.
My code: load dataA.mat %x1=dataA(:,1); %y1=dataA(:,2); f1 = fit(xAbove,yAbove,'smoothingspline','SmoothingParam',0.0001);...

3 years ago | 1 answer | 0

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Question

Hello everyone, how do you fit two curves into a closed curve?My code is as follows.
load dataA.mat %x1=dataA(:,1); %y1=dataA(:,2); f1 = fit(xAbove,yAbove,'smoothingspline','SmoothingParam',0.0001);%smoothingsp...

3 years ago | 2 answers | 0

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Question

Hello everyone, how to divide a piece of data into upper and lower parts along the y-axis with C point and D point as the boundary?

3 years ago | 2 answers | 0

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Question

Hello everyone, I would like to ask a question how to parameterize data points?
The method of parameterization of data points is as follows:

3 years ago | 1 answer | 0

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Question

Hello everyone, I would like to ask a question. How to plot only the (-pi:+pi) range of the following curve.
load jizuobiao1.mat XX1=[THETA11;RHO11]; THETA11=linspace(-pi,+pi,length(RHO11))'; f1 = fit(THETA11,RHO11,'smoothingspline','...

3 years ago | 1 answer | 0

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Question

Hello everyone! When fitting a curve, the interval of curve x is [-3,3], and another fitted curve will exceed this interval. I don't know where the problem occurred in which piece of code.
code: load jizuobiao1.mat f1= fit(THETA11,RHO11,'smoothingspline','SmoothingParam',0.99);%smoothingspline plot(f1,THETA11,R...

3 years ago | 0 answers | 0

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Question

Hello everyone, how to write the code to calculate the similarity coefficient of two curves?Another problem is that when fitting a curve, the interval of a curve x is [-3,3], and it will exceed this interval when fitting a curve. I don’t know where t
code: load jizuobiao1.mat f1= fit(THETA11,RHO11,'smoothingspline','SmoothingParam',0.99);%smoothingspline plot(f1,THETA11,RHO...

3 years ago | 1 answer | 0

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Question

Hello everyone, how can I plot the following six curves on a graph? More importantly, compare the similarity of the six curves.
code: load jizuobiao1.mat f = fit(THETA1,RHO1,'smoothingspline','SmoothingParam',0.99); plot(f,THETA1,RHO1)

3 years ago | 1 answer | 0

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Question

Hello everyone, I would like to ask how to write the similarity code of two curves.
how to write the similarity code of two curves.

3 years ago | 0 answers | 0

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Question

Hello everyone, I would like to ask how to keep only the fitted curve and delete the data points in the picture below. The program is shown below, I don't know how to modify it.
code： load data.mat f1 = fit(THETA11,RHO11,'smoothingspline','SmoothingParam',0.99);%smoothingspline plot(f1,THETA11,RHO11)...

3 years ago | 1 answer | 0

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Question

How to use smoothing spline to fit a closed curve?
How to use smoothing spline to fit a closed curve?

3 years ago | 2 answers | 0

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Question

How to perform high-precision fitting of points on unknown trajectories? And calculate the fitting coefficient.
How to perform high-precision fitting of points on unknown trajectories? And calculate the fitting coefficient.

3 years ago | 1 answer | 0

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Question

Hello everyone! How can I rearrange the coordinates in the abscissa from largest to smallest?
Ao=[THETA,RHO]; xo=A(:,1); yo=A(:,2); [xo1,k]=sort(xo,'acend');

3 years ago | 1 answer | 0

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Question

Hello everyone. I would be very grateful if anyone can help to see if there is any problem with the centroid extracted by this program.
BW = imread('k.png'); s = regionprops(BW,'centroid'); centroids = cat(1,s.Centroid); imshow(BW) hold on plot(centroids(:,...

3 years ago | 1 answer | 0

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Question

Hello everyone.How to modify the judgment code below and add'This is correct' and'This is wrong'?
lamda1=4; v=('This is correct');Ak = ('This is wrong'); if 0.125<lamda1<3 lamda1=v; else lamda1 =Ak; end

3 years ago | 1 answer | 0

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Question

How to use the three points A1, A2, and B0 to calculate ∠A1B0A2?

3 years ago | 2 answers | 0

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Question

For a matrix with an unknown number of rows, how to find the number of rows n and transform it into n matrices.

3 years ago | 2 answers | 0

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Question

Hello everyone. I want to ask a question. How to filter out the two largest y values in multiple sets of coordinate data and save the two coordinate points?

3 years ago | 1 answer | 0

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Answered
How to divide an n×2 matrix into the coordinates of n points and save them separately?
The data file is this.

3 years ago | 0

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How to divide an n×2 matrix into the coordinates of n points and save them separately?

3 years ago | 2 answers | 0

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Question

Hello everyone, I now have a set of data. I would like to ask how to draw these scattered points in polar coordinates with the centroid point as the center.
It is difficult to draw a closed polar coordinate curve. load data1.mat x=data1(:,1);y=data1(:,2); hold on plot(centroids(...

3 years ago | 1 answer | 0

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Question

For my data, how should I edit it with this program?
clear all clc n=input('Enter no. of points '); w=input('Press 1 for entry through mouse or 2 for keyboard repectively-->'); ...

3 years ago | 0 answers | 0

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Question

As shown in the picture，how to fit discrete points to a closed curve?

3 years ago | 1 answer | 0

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Question

How to use the method in this article I uploaded to write a program to fit a closed curve？
How to use the method in this article I uploaded to write a program to fit a closed curve？The required data and the article have...

3 years ago | 1 answer | 0

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Answered
How to fit the data points into a closed curve?
For convenience, we use this data for closed curve fitting.

3 years ago | 0

Answered
How to fit the data points into a closed curve?
The curve you fit out is a bit larger than the original image. I am thinking of a fitting method that is more appropriate to the...

3 years ago | 0