DGM

Last seen: Today | Attivo dal 2015

Hi, I'm nobody. I don't belong here, but I have nothing better to do. Matlab used to be part of my work. Now it's part of my hobbies. That's pretty sad, really. -- I don't reply to email anymore. If you have a question about my questionable FEX submissions, leave a comment on the FEX page and I'll get the notification. Alternatively, ask a question on the forum and @DGM me so I'll get notified.

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Why doesn't the MATLAB onramp play?
Does the player itself fail to load? Is the player loading but failing to respond to inputs? Is the player loading and respond...

circa un'ora fa | 0

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How to interpret info about release compatibility on the File Exchange?
It seems confusing because it is confusing. I usually don't put much weight in those tags. I just look at the version history....

1 giorno fa | 0

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PN Sequence Generator Code (2003)
I don't see anything that's version-dependent here. I just see a bunch of problems likely caused by copying and pasting code fr...

3 giorni fa | 0

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Image 2:1
This is essentially a duplicate of this question https://www.mathworks.com/matlabcentral/answers/1977519-image-zoom-2-1 Since ...

5 giorni fa | 0

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Image zoom 2:1
% these aren't JPGs A = imread('image1.bmp'); B = imread('image2.bmp'); C = imread('image3.bmp'); D = imread('image4.bmp')...

5 giorni fa | 0

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How to detect green laser spot with nearly white center
here's this, FWIW. inpict = imread('dot.png'); % get bright spots that coincide with green spots % centers of green spots d...

6 giorni fa | 0

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Find which halftone was used
I imagine the answer is "maybe, but probably not". The big problem I see is that it seems that when most people say "halftone",...

7 giorni fa | 0

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How to calculate average intensity of image having some range?
That's simple enough for a single channel image. % inputs inpict = imread('cameraman.tif'); % single-channel (I) roirange = [...

8 giorni fa | 0

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Line/FreeDrawROI is not visible in axis w/ Point Cloud
I haven't checked the documentation, but I seem to recall that the images.roi tools need an image object in the given axes. It's...

10 giorni fa | 0

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Why does Matlab duplicate the output image ?
There are a number of things going wrong here, none of which should cause an image to be displayed multiple times. ... at least...

10 giorni fa | 0

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extract colored image from white background
Checks are (usually) some light pastel color. Sometimes they'll have a helpful dark border, but other times (like this case, th...

10 giorni fa | 0

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Normalizing pixel colours of an RGB image
inpict = imread('peppers.png'); % uint8 inpict = im2double(inpict); % unit-scale float outpict = inpict./sum(inpict,3); % al...

11 giorni fa | 0

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how can i create this image in matlab
Without clarification, I'm going to take the liberty to assume that you want a plain line plot with no dimensioning marks. % pa...

11 giorni fa | 1

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how to extract images from pure white background
Well if it's a pure white background, you can just create a mask that selects everything that's not white and then ... inpict =...

11 giorni fa | 0

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Problem with making cash change
I see two problems: First, there's no provision for amounts which are not integer-divisible by 0.1. I don't know if that's cus...

12 giorni fa | 0

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Find path through logical matrix (only walking right or down)
I think my comment still stands. I believe that this works, but I haven't really proven it. I don't think it's very elegant. ...

12 giorni fa | 0

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how this command works"meanGL = mean(blackMaskedImage(binaryImage));". My input image is a HSV image. How it calculates the mean.
What it means is probably not a good place to start. Let's back up, because we're probably not doing what we think we're doing ...

13 giorni fa | 0

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Why my code calculates values for image statistics, which are far greater or less than the standard ones? Both for encrypted and decrypted images.
Let me guess, they're off by a factor of 255? Pay attention to data scaling and class. Most images you load will be unsigned i...

14 giorni fa | 0

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manually cropping an rgb image to get output in rgb
In this line, the image is MxNx3, but the mask is MxNx1. blackMaskedImage(~BW) = 0; So the mask is only applied to the first c...

15 giorni fa | 0

Inviato

Image Manipulation Toolbox
A large collection of image manipulation tools of varying utility

16 giorni fa | 138 download |

Risposto
How to display 10 sets of 26 images in a plot?
If you arrange your plots in a regular grid, you don't need all the labels between them. You can move the labels to the edge an...

16 giorni fa | 0

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I have a text file that contains the pixel values of an image, how do I convert it into matrix and then form the image.
Assuming you know what the image size is and how it's stored, you read the file, reshape it, and cast it to a class appropriate ...

17 giorni fa | 1

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issue with rgb2ind
When I was adding gray2pcolor()/uniquant() to MIMT, I thought about this question. I took the time to add dithering modes to bo...

18 giorni fa | 0

Inviato

Image blending functions
Image blending & compositing with support for 4D images, influence scaling, and several uncommon modes

18 giorni fa | 7 download |

Inviato

Tools to read and write animated gif files
Functions to read and write animated gifs to and from 4-D RGB image arrays

18 giorni fa | 18 download |

Risposto
I need help animating the evolution of a polar plot and saving it as a gif.
A few things: You're only plotting one point at a time, so if you use a linestyle but no marker style, there's nothing to plot....

18 giorni fa | 0

Risposto
Suppose you thresholded an image at value t1 and thresholded the result at value t2, describe the results if (a) t1>t2 and (b) t2>t1.
Say %B = A >= t1; % threshold A at t1 %C = B >= t2; % threshold B at t2 The relationship between t1,t2 is irrelevant. What ...

19 giorni fa | 1

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Risposto
How to replace range in matrix with specific value?
You can do that like so: A = [1 2 3; 2 3 4; 4 5 6]; A(:,1:2) = 5

20 giorni fa | 0

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Risposto
histogram for images in Y Cb Cr colour space.
See the answer here: https://www.mathworks.com/matlabcentral/answers/1936059-how-can-i-plot-the-ycbcr-histograms-with-the-corre...

20 giorni fa | 0

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Conversion of grayscale image into RGB and CIELAB color space
I would think that the obvious choice would be % an I/RGB image inpict = imread('https://www.mathworks.com/matlabcentral/answ...

20 giorni fa | 0

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