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How to extract the keyframes from video?
Dear Pan, There are so many easy and complex ways. The best and the simplest is based on Entropy. You calculate the Entropy o...

14 years 前 | 2

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How to Envelope a Dataset?
Dear Aviator, Actually your problem is quite related to finding the Convex hull. The data points you have shown are not good en...

14 years 前 | 2

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constant line in output, while plotting data
Dear the constant line is getting as your last point might be outlier. You can simply remove that line by this code. plot(tim...

14 years 前 | 2

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IMAGE SEPARATION INTO BLOCKS
Dear as in obove code division is n't correct .. follow this code let say your image is I of 256 x 256. Make your your grid whi...

14 years 前 | 3

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how to divide an image into blocks
Dear Pat, mat2cell is the only easy solution for your question. You are getting this error because your the mod of your IMG a...

14 years 前 | 2

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Is '.-' no longer a valid line format for plots?
Dear Sir, I am not sure for older versions. You still can use this format for line and marker in plots. plot(1:10,'.-') % is ...

14 years 前 | 2

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"FOR" loop
p=primes(100); A = zeros(1,length(p)-1); for i=1:length(p)-1 A(i) = p(i) * p(i+1); end A just copy and past...

14 years 前 | 2

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"FOR" loop
let say your prime vector is P; p=primes(100); a = zeros(1,length(p)-1); for i=1:length(p)-1 a(i) = p(i) * p(i+1); e...

14 years 前 | 2

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hi, im trying to produce the answer for this equation in vector. example for a[1 2 3 4 5], im expecting my answer to be y[0 4 8 10 12.5]. can anyone help me to explain about this?thanks
I don't your formula to produce y. But to get equal length vector to a, you should do like this. a=[1 2 3 4 5]; y=size(a...

14 years 前 | 2

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How to plot 3 garph in one figure?
Well, if you want to draw three different graph figures into one figure then you can use subplot. ex: let say I have two graphs...

14 years 前 | 2

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Import from .arff to matlab
Dear Mani, I didn't test this but hopefully it will solve your problem. Check this link below. Do let us know if it worked. ...

14 years 前 | 2

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Path, Current Directory, "exist" and "which" functions
Dear I guess it depends on your current directory. Let say you are in studies_1/ directory. then load ('data/file.mat'); ...

14 years 前 | 2

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Recursive gaussian filter vs traditional gaussian filter
As I understand your code and question. you have kernel variable. Kernel =[1, 4, 7, 4, 1, 4, 16, 26, 16, 4, 7, 26, 41, 26, 7,...

14 years 前 | 1

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Graphing problem
Dear Courtney, Whenever you copy code please make it proper so that reader can read and then execute if needed. something lik...

14 years 前 | 1

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choosing region of interest of an image (cropping problem)
Dear you just have to drag the mouse to make rectangle and then right click and select "Copy position". The cropped region will...

14 years 前 | 5

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how to find Euclidean distance in matlab?
Dear what is the size of your feature vector, if it is column vector then let say your have 1000 feature vector of 1000 images. ...

14 years 前 | 1

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To apply Gaussian in histogram?
Dear I guess you have histogram and you want to apply gaussian weight to it. If it is so then let say you have Histogram H. then...

14 years 前 | 2

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if statement logical error
Dear when I execute your code, i get the if part not else part. I also checked your all conditions and all conditions are true. ...

14 years 前 | 0

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How to convert a .tif file into a .mat file?
If it is so, then you simply convert that tiff into mat file like this.. let say tif file name is "Example.tiff"; A = imread...

14 years 前 | 2

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"double" vs. "uint8" input using "imshow" function
uint8 is used unsigned 8 bit integer. And that is the range of pixel. We can't have pixel value more than 2^8 -1. Therefore, for...

14 years 前 | 12

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folder in a directory
A = dir % you get everything in current directly of matlab. or if you want to explicitly mention any directory path then you ...

14 years 前 | 1

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提问


Handling multi figures.
I have saved three figures in my system. Figure1.fig, Figure2.fig, and Figure3.fig. Now I want to load this figures and ...

14 years 前 | 1 个回答 | 1

1

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The code does not work with 1.7
Anyway you can do what ever you want from this simple one lines. v =hist(y,[1:.1:2]) This is simple. Take the histgram. ...

14 years 前 | 1

已回答
Equality error
Dear for comparing the string you should use *strcmp* function. ex. a(1).name ='2pm'; a(2).name='SNSD'; a(3).name = '2p...

14 years 前 | 1

| 已接受

已回答
Array/Data Strucutre Returns Problem
I think you can't compare two string with == . You will get dimensions mismatch. As for string '2pm' the length = 3 and for 'SNS...

14 years 前 | 1

| 已接受

已回答
random number generator
Yes you can do it for non repeating randoms. One possible way is which chandra suggested above. But if you want to avoid loops t...

14 years 前 | 1

| 已接受

已回答
Array/Data Strucutre Returns Problem
As I understand that if you store idols(1).groupname='2pm'; and when you type idols(1).groupname you get ...

14 years 前 | 1

已回答
Accepting and saving multiple size matrix input
As I understand you want a function undefined number of input. so it can either be implemented as follow. function myFunc(v...

14 years 前 | 0

已回答
random number generator
Let say you have matrix A of 5x1. And you want three of them to be one number. So generate three number r = round( rand(3,1)...

14 years 前 | 1

提问


Matrix operations without loop.
Hi everyone, Let say *A* is the matrix of size _100 x 100_ , A is kind of lookup table. and There is an other matrix ...

14 years 前 | 2 个回答 | 0

2

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