Alessandro Masullo

Last seen: 1年以上前 | 2012 年からアクティブ

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

約6年前

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ale152/automagic_mask
Create a mask for PIV images automatically

6年以上前 | ダウンロード 1 件 |

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Read PNG from memory buffer (without dumping it into a file)
Hello, I have some PNG images saved in base64 strings. I can easily load them into memory and decode the base64 to obtain the...

6年以上前 | 0 件の回答 | 0

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PIV image tool
Alternate two PIV images with velocity vectors, to visually inspect the result of a PIV analysis

7年以上前 | ダウンロード 4 件 |

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POD-based background removal for Particle Image Velocimetry
The following script is a Matlab implementation of the algorithm described in the paper

7年以上前 | ダウンロード 7 件 |

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Totally crazy behaviour of figures. Axes going around through the image!
I contacted the MathWorks Support and they confirmed me that this is a bug of the R2015a version. They also suggested me a si...

7年以上前 | 0

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Totally crazy behaviour of figures. Axes going around through the image!
Hello, I'm working on a GUI in matlab and I ended up with a really strange behaviour in my code. I manage to isolate the prob...

7年以上前 | 3 件の回答 | 0

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ExportPngInkscape(filename,dpi,handle)
Save figures in high quality PNG by saving them in SVG and exporting in PNG using Inkscape

8年弱前 | ダウンロード 1 件 |

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Plot multiple surfaces multisurf(x,y,z,color)
Plot multiple surfaces in the same figure, with different colors

8年弱前 | ダウンロード 1 件 |

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Hi all! I'm new to matlab. I've a problem in removing a circle object from the xray image. I've tried a few commands, but all of them are not working. help me :(
If the position of the spot is always the same, you can use the excellent function from the file exchange: http://www.mathwor...

8年弱前 | 0

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Hello, i'm trying to search for an area of an image.
I don't know if this solution works for you, but I would use histeq to equalize the image first, then conv2 to convolve the imag...

8年弱前 | 0

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How to display the Rectangles from different frames in one frame?
If you know the coordinates of your rectangles, you can simply extract each box from your image by using standard indexing: ...

8年弱前 | 0

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How to calculate repetition of an unknown number present in 2nd column of a 150*2 matrix?
You can use the function hist (or histc) on the second column of your matrix.

8年弱前 | 0

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How to detect an absent object from a mask image and remove it on the original image?
I don't know what are your general conditions and I assume your images are always slightly different from each other and every b...

8年弱前 | 0

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How do I remove the background from this binary image?
If you found your mask for your object, you can simply remove the background by using: image % your image mask % your ...

8年弱前 | 0

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how to get horizontal projection of histogram of an binary image ?and based on that how to segment of each line in the image? please suggest me
Given your image _im_, you can binarize it with im2bw: bw = 1-im2bw(image); The horizontal histogram (I guess) is the s...

8年弱前 | 0

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Image analysis - line to value data plotting
You can use imread to read the image. If your image is already normalized, you can use find to get the elements of the line. Bei...

8年弱前 | 0

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How to select x,y a coordinates from two points in image?
You can use the function max, together with ind2sub.

8年弱前 | 0

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i have a number of cars in 2007 per 1000 people which is 290 , how can I make forecast the number at 2014, by simple way in matlab?
years = 2001:2005; cars = 100:100:500; new_year = 2010; interp1(years,cars,new_year,'linear','extrap') As an a...

8年弱前 | 0

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How I can add marker names with plot function?
You can use the function text

8年弱前 | 0

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Loop animation with quiver plot
Every time that you want to update the figure, you need to call the drawnow function. You won't probably be able to get a framer...

8年弱前 | 0

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how can find matching point in two images?
I would suggest you to use normalized cross-correlation first, to get a rough estimate of the position of your object, and then ...

8年弱前 | 0

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How to replace RGB values
If I understood it correctly, you may simply use a linear scale. Once you read you image, you have a 3d matrix (row,col,3). The ...

8年弱前 | 0

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How can I create a row of numbers form 1 to 10 ?. like this [1.0000, 2.0000, 3.0000,...]?
Matlab deals with double variables by default. If you write 1, it is actually 1.00000000 If you just want to display it, you...

8年弱前 | 1

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Matlab is giving me multiple graphs and i'm only interested in one of them...How do i filter out the unnecessary curves that matlab is giving me?
If you go to view, plot browser, in the figure menu, you can see everything that is plotted and untick what you don't want to se...

8年弱前 | 1

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question about contour maps
If you have the torque matrix, you can simply use contour(torque). If you want to fill the space between lines, you can use cont...

8年弱前 | 0

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to read .xls file
http://uk.mathworks.com/help/matlab/ref/xlsread.html

8年弱前 | 1

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How to solve segmentation violation error when I call a C-MEX function which is compiled correctly?
I suggest you to run a debugger on your C file. I've never done it on GNU/Linux, but it should be possible in the same way as on...

8年弱前 | 0

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Printing particular rows and columns
start = data(2:end,18);

8年弱前 | 0

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Change the folder names from one digit to 2 digit numbers
You can use dir, sscanf, sprintf and movefile. Use dir to get the list of the folders. Use scanf to get the number of the ...

8年弱前 | 1

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Alessandro Masullo

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