Steven
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Professional Interests: Image Processing
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Awarded to Steven on 09 Oct 2019
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Domanda
How to move the Origin to the top right corner of 3D bar plot?
I am using the function SCATTERBAR3 to plot a 3d bar plot. Is there anyway that the origin can be moved to the top right corner ...
quasi 5 anni fa | 0 risposte | 0
0
risposteDomanda
How to show surface plot of 2D data?
Hi. I have a set of data points, C at each x and y (for many cases). In 2D, the plot looks simply like this: So this is a s...
quasi 5 anni fa | 1 risposta | 0
1
rispostaDomanda
How to find strings in a very large array of data?
Hi I have a csv file containing a large number of numbers and a few random strings like 'zgdf'. I need to find them and set th...
circa 5 anni fa | 3 risposte | 0
3
risposteDomanda
How to remove the background noise from a signal?
Hi. I have the following signal. I am mainly interested in getting the peaks of the red signal. So I want to remove the part (ba...
circa 5 anni fa | 1 risposta | 0
1
rispostaDomanda
Inverse Fourier Transform ignores oscillations
Hi. I am doing some time and freq analysis. So lets say I have some x-t data, I use fft to take them in freq domain, do some cal...
circa 5 anni fa | 0 risposte | 0
0
risposteDomanda
How to skip a file in reading a series of csv files using csvread?
Hi. I am reading a large number of data from say, 100 csv files using csvread. But some of these files (say 10) have nonnumeri...
circa 5 anni fa | 1 risposta | 0
1
rispostaDomanda
How to find volume under fitted data?
I have a set of data, fitted by polynomial of 8th order. I want to find the volume under this surface (due to rotation around y ...
circa 7 anni fa | 1 risposta | 0
1
rispostaDomanda
How to get Greek letters in text in an IMAGE using Inserttext?
Hi I want to use text with Greek letter in an image (use text as part of the image) using "Inserttext" as suggested by Mathwor...
oltre 8 anni fa | 2 risposte | 0
2
risposteDomanda
How to rotate back a streched image?
I have an image which is stretched in one direction. How can I turn it back to normal plane, so it becomes again a circle? I kno...
oltre 8 anni fa | 1 risposta | 0
1
rispostaDomanda
How to identify the disk edge?
How can MATLAB determine the radius of the disk? (imagine the center is known) I know that if the whole circle is visible, I ...
oltre 8 anni fa | 1 risposta | 0
1
rispostaDomanda
How to get dominent frequency from intensity along a curve in an image?
I want to find the dominant frequency. I used fft in this way yf3 = fftshift(fft2(intensity_profile)); and I got, again fo...
oltre 8 anni fa | 1 risposta | 0
1
rispostaDomanda
How to make the edge darker (increase contrast?)
I want to somehow increase the contrast if it is the thing to do. What I want is make the edge darker and clearer, so that I can...
oltre 8 anni fa | 2 risposte | 0
2
risposteDomanda
FFT range for a signal
Hi I have a signal from which I want to find the dominant frequency. Does fft ignore the part which is constant (like DC)...
circa 9 anni fa | 1 risposta | 0
1
rispostaDomanda
Matlab opens a figure on its own with this funny feature!
Hi I am sure I have only one figure,plot(...) command in my code, but when I run it, it first creates this funny figure (with...
circa 9 anni fa | 2 risposte | 1
2
risposteDomanda
Adjust the intensity of images with nonuniform light
My laser light is blinking (I don't know why?!), so the images I have is something like the followings. The intensity is differe...
circa 9 anni fa | 1 risposta | 0
1
rispostaDomanda
How to smooth signal and find dominant freqeuncy using FFT?
Hi. I am not so familiar with signal processing. I have this oscillation which I like to find its dominant frequency. I used ...
circa 9 anni fa | 1 risposta | 0
1
rispostaDomanda
Relation between "Image" intensity and "Light" Intensity?
What is the relation between "Light" intensity and "Image" intensity? Is there any reference that I can rad about it? I sear...
oltre 9 anni fa | 2 risposte | 0
2
risposteDomanda
Light intensity or Grayvalue?
Hi. I have a trivial question! I looked about it, but I am still not sure! Something simple confuses me! I would be grateful...
oltre 9 anni fa | 1 risposta | 0
1
rispostaDomanda
How to plot 3D? Surf or Plot3?
Hello, Imagine I have a function A(x,y,t). But the dimensions of y and t are different with that of x (and so A). What I...
oltre 9 anni fa | 1 risposta | 0
1
rispostaDomanda
Increase edge thickness in binary?
Hi I have detected the edges of an image using "bwperim". I want to increase the thickness the edges (such as the sides of a ...
circa 10 anni fa | 1 risposta | 2
1
rispostaDomanda
Why does bwperim give wrong perimeter?
I wanted to get the perimeter of the following circle. I used two methods, but got completely different results! <</matla...
oltre 10 anni fa | 2 risposte | 0
2
risposteDomanda
How to remove small CLUTTER from images?
Hi. How can I remove small clutters in an image? For example in the following image (this is a binary one obtained from the ...
quasi 11 anni fa | 2 risposte | 0
2
risposteDomanda
Too many digit numbers in MATLAB strings?
Hi I am using strings in a format like: sprintf('image-%f-%d.jpeg'),i,j) but it writes the files for me in long digits,...
quasi 11 anni fa | 1 risposta | 0
1
rispostaDomanda
How to get correct Fourier Transform from Spatial Coordiantes?
Hi. Imagine I have the following profile for gray intensity along a known curve: <</matlabcentral/answers/uploaded_file...
quasi 11 anni fa | 2 risposte | 0
2
risposteDomanda
How to smooth plot of data?
Hi How can I smooth the following data? This is the gray intensity of an image. I could not use "smooth" function for that. ...
quasi 11 anni fa | 2 risposte | 0
2
risposteDomanda
How to draw circle with imellipse?
Hi I want to draw a circle with imellipse. I used something like: AA = imellipse(gca,[xmin ymin radius radius]); but I ...
quasi 11 anni fa | 2 risposte | 0
2
risposteDomanda
How to get INTENSITY along a spcific curve?
Hi. How can I get the intensity along a specific curve? I mean for the following image, I want the intensity along the re...
quasi 11 anni fa | 2 risposte | 0
2
risposteDomanda
How to calculate diameter from side view?
Hi! Imagine we have a side view of a circular object such as a coin. How can I accurately calculate the diameter of an obje...
quasi 11 anni fa | 1 risposta | 0
1
rispostaDomanda
Add extra marker to the plot?
Happy New Year! How can I add extra marker to a plot with several curves? I mean suppose that the plot with several curv...
quasi 11 anni fa | 1 risposta | 0
1
rispostaDomanda
why does bwperim make the border WHITE?!!
I want to use bwperim to calculate the perimeter of an object, but I got a strange thing! I use bwperim in two different stat...
quasi 11 anni fa | 1 risposta | 0
1
risposta
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