# Jürgen

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Inserting excel files from different folders for different processing

más de 10 años hace | 0

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The threshold of sobel
Hi, I am trying to find how the sobel threshold is defined: I found : determine the threshold; see page 514 of "D...

más de 10 años hace | 1 respuesta | 0

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Pregunta

How to define color accuracy of an image system
Hi, I am working in image analysis but until now I have very little experience in color measurements. I need to measure the...

más de 10 años hace | 1 respuesta | 0

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increasing the launch angle of projectile so it reaches a certain distance
Hi, I admint I did not check all your code, but if you want something like: theta= Value; thetaStep= StepValue; ...

más de 11 años hace | 0

Pregunta

Title disappears sometimes somtimes not
Hi, I generate a subplot with the code below. Normally that gives me 8 subplots with a title but for some subplots the title d...

más de 11 años hace | 1 respuesta | 0

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How to calculate the energy of an image and what is the unit of that energy ?
Hi, maybe ths helps: http://www.mathworks.com/matlabcentral/fileexchange/13837-meanstdenergy-of-imagecumulative-gray-level-d...

más de 11 años hace | 0

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Term matrix and regression model formula
hey, am not sure about the way the regression model is formulated in the help file this model is proposed 'MPG ~ Acceleratio...

más de 11 años hace | 0 respuestas | 0

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What is the problem in these code?
Hi, sum(a(:,:,x) (:,1:2:end),2); is not correct , I think What do you want to do there? '(:,1:2:end)' is referring to the...

más de 11 años hace | 0

Pregunta

Which matlab function can be used to compare spatial distribution grids?
Hi, I have two spatial distributions in a grid, so lets say a 40 x 70 matrix: each grid has the same dimensions e.g. 0.250 m...

más de 11 años hace | 1 respuesta | 0

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Respondida
multiple if statements in matlab
Hey, difficult to check it without example values but if I understand it well you are comparing a column vector p to a column...

más de 11 años hace | 0

Respondida
How to correct the assignment Error?
Hi, there is a function: imhist(I) , quite useful for this work, + if you want to calculate the hist by summing for each va...

más de 11 años hace | 0

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Solving homogeneous linear set of equations

más de 11 años hace | 2

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Selecting data points in 3D space
Hi, in file exchange there is a file to extract a Volume of Interest, do no if that can help? regards,J

más de 11 años hace | 0

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noise removal in Image
Ok so I indeed did not understand your question, I got interested and just did some googling: first found a paper: http://www...

más de 11 años hace | 0

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noise removal in Image
Hi, first, quite a challenge to understand your question? did you check ' How to remove noise? or something like that in ma...

más de 11 años hace | 0

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How can I find an object distance in an image??
hi, first Your question is not clear? second, on a single image you can not extract object distance,=> you need stereovision, o...

más de 11 años hace | 1

Pregunta

testing collinearity with algorithm collinear7
Hi, I was looking for an algorithm to test collinearity and found : http://blogs.mathworks.com/loren/2008/06/06/collineari...

más de 11 años hace | 1 respuesta | 0

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detect and fit curved lines in an image
Hi, Hough Transform can also be used for detecting curves:http://faculty.washington.edu/cfolson/papers/pdf/cviu99.pdf reg...

más de 11 años hace | 0

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Check if matrix contains zero or not and ...

más de 11 años hace | 0

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How to change a variable within an equation in a loop?
do you mean for Counter=1: 48 s=[ 1 0 -1 F(i)] p(i)=roots(s) end probably I misunderstood becaus ethis seems to simpl...

más de 11 años hace | 0

Respondida
Angles from XY coordinates from a matrix
Hi, two possibilities if you want to process a lot of data : you can use loops or vectorize, in this case, with few i...

más de 11 años hace | 0

Respondida
how to adjust the size of the cross
Hi, if your are talking about markers, then the answer is yes, you can set the marker size e.g. from the help docs: plot(x...

más de 11 años hace | 1

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plotting two curve in one axes
use the hold function hold on for example will help regardsJ

casi 12 años hace | 0

Respondida
Linear plot to contour plot
Hi, to make a contour plot you need two dimensions, since you only have r the radius it won't work You need the (x,y) c...

casi 12 años hace | 0

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Differences between script and function file
Hi, the coding between script file and function is the same, only the header is different let's say I make in a script ...

casi 12 años hace | 0

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i am new to the image processing. i need help for deblurring the below blurred image.
Hi, If you're new take a look at : <http://www.mathworks.nl/products/demos/image/ipexblind/ipexblind.html> regarsJ

casi 12 años hace | 1

Respondida
Surface of a equation
[x,y,z] = sphere(); r = 5; figure,surf( r*x +cx, r*y+ cy, r*z +cz) wit (cx,,cy,cz) the center look at http://www.mathworks....

casi 12 años hace | 0

Respondida
I can not return real values
I think this code does what you want or no what I think that you want :-) Of course much nicer if you make a function of it ...

casi 12 años hace | 0

Respondida
I can not return real values
I am not sure if I get it , is not so clearly explained but I would work with the length of the OriginalVector of size(OriginalV...

casi 12 años hace | 0

Respondida
Median filter for rgb images
Hey, I would perform it on one of the channels depinding on which features afterwards you want to extract, or perform it on ...

casi 12 años hace | 0