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DGM


Last seen: Today Con actividad desde 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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Respondida
Why does imnoise add different noise than randn?
You're seeing two things. First, your image is improperly-scaled for its class (1-256 for class 'double'), but the image you'...

alrededor de 13 horas hace | 0

| aceptada

Respondida
How to detect contents of a beaker in an image
Here's an initial attempt. How well this works really depends on how vague the gap between the blobs can be. As Walter mention...

alrededor de 18 horas hace | 1

Respondida
How to add gray bands in a plot
Here's my interpretation. I'm assuming you're using datetime for the xdata, so % some fake data t1 = datetime(2013,11,1,8,0,0...

1 día hace | 3

Respondida
Choosing the centroid of an specific shape
Here. I tried to clean up the screenshot so that it's at least usable for a demo. Instead of using imadjust(), and trying to i...

1 día hace | 0

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Respondida
Converting a set of audio signals to images and saving them.
I don't know what st() is, but I have to assume it's a function -- possibly an STFT tool? If so, then it won't be a function an...

2 días hace | 0

Respondida
Extracting images embedded in Excel Files
If all you need is to extract images, you can do that directly. The attached xlsx file contains two embedded PNGs and a JPG. O...

2 días hace | 1

Respondida
Error using actual and detected edge image sizes must be same error.
Your inputs are JPG. Most JPGs will not be single-channel. On one side of that equality test, this is what happens: rgbpict =...

4 días hace | 0

Respondida
How do I measure distances in an Image
You say you want the maximum distance along the x and y axis, but what you drew is something else. So which do you want? You c...

4 días hace | 0

Respondida
Conversion of (129x7 complex double) to an Image
Are you sure you don't want to just save a graphical representation (i.e. a plot)? % some fake test signal fs = 1000; t = 0:1...

4 días hace | 1

Respondida
How to sort rows of a 2D array based on another array
Here's one example. I'm sure there are others. A = [1 2 3;2 1 3;3 2 1]; B = [0 1 2;0 1 2;0 1 2]; % get sorting and size in...

5 días hace | 0

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Respondida
How to discretize the color in contour bar at smallest possible range?
Since you didn't specify the levels or even the number of levels in the call to contourf(), there is no reason to suspect that t...

5 días hace | 0

Respondida
Error in imnoise>ParseInputs
We know that imread() will only return an array of class 'logical', 'uint8', or 'uint16' when given a PNG image. Since only a s...

5 días hace | 0

Respondida
i have an ultrasound image i want to remove the labeles on the image by using y=mx+b line to convert the pixeles above the line to black.how can i do it?
There are a couple things going on here. filename = '181.png'; img = imread(filename); img = im2gray(img); % need to work on ...

6 días hace | 0

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Respondida
Could someone help me to import individual jpeg images embedded in a gif image into each slide in a PowerPoint file? I use exportToPPTX.
As far as I know, the bug mentioned in the first link still exists, and the only solutions are those described at the end of the...

6 días hace | 2

Respondida
color all pixels in an image black except white pixels
Presuming that "white" is [255 255 255] within the context of a uint8 RGB image: inpict = imread('https://www.mathworks.com/mat...

7 días hace | 0

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Respondida
How to display a message as flashing and in my desired color and font size?
If you want it in the command window, then your options are severely limited, and the rate at which you can "flash" will be limi...

7 días hace | 0

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Respondida
How do I extract table on a web page into a MATLAB table?
Everything on that page is dynamic content generated by scripts. That information isn't part of the page source. Unless they h...

7 días hace | 0

| aceptada

Respondida
How to plot This graph in matlab?
1.00E-2 is shorthand for scientific notation 1.00*10^-2. % define x x = 1.0:0.05:3.0; % YData as row vectors in a matrix y...

7 días hace | 0

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Respondida
oblate and prolate figs
See ellipsoid() r = [1 1 2]; % radius [x y z] c = [0 0 0]; % center [x y z] npoints = 30; % if no output arguments are req...

12 días hace | 0

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Respondida
issue with colormap (colorcube)
From the R2019b release notes: Predefined colormaps have 256 colors by default Behavior change The predefined colormaps, such...

16 días hace | 2

Respondida
find Center pixel to maximum distance
I'm going to ignore how to calculate the distance array, and just focus on the task that the tagging implies. If the goal is to...

17 días hace | 0

Respondida
I tried to generate a sequence with a specific interval, but the output skips some intervals.
I missed the comparison. You're dealing with floating-point numbers. You can expect exact equality tests to fail due to roun...

17 días hace | 1

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Respondida
How can I add timer to a stack of image and play it as a video with timer going on in the corner of it?
See this thread https://www.mathworks.com/matlabcentral/answers/101413-how-can-i-add-text-to-an-image-and-make-the-text-become-...

18 días hace | 1

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Respondida
What is the range of L (lightness) when plotting HSL bi-cone colour space?
In most implementations , L will be from 0 to 1, so yeah if you wanted to visualize it at uniform scale, it would be a squat bic...

18 días hace | 0

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Respondida
Size doesn't match Value?
You're finding the size of the char vector, not the variable. myvariable = rand(100,1); size(myvariable) % this is a 100x1 n...

19 días hace | 2

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Respondida
How to add a portion of image to another image
Hmm. That's a very good question. How would one accomplish an ill-defined image composition? Well, the answer is easy. You c...

19 días hace | 0

Respondida
Removing neighbours that are too close from eachother in a vector
Here's my guess. The behavior is dependent on whether you can actively accept or reject entries. If it's assumed that values c...

20 días hace | 0

Respondida
How to know how much I rotated a figure?
You should be able to query and set the camera position using view(); [az el] = view(); % get position % ... view(az,el); % s...

22 días hace | 0

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Respondida
How can I crop rectangles from an image?
If I were to answer the question as asked: inpict = imread('image.jpeg'); % get mask selecting red lines yccpict = rgb2ycbc...

22 días hace | 1

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Respondida
Returning cropped image on to original image after doing some analysis on that cropped portion
It seems like this is something that would be easier done in-figure, rather than trying to cut up screenshots. % ROI extents ...

22 días hace | 2

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