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DGM


Last seen: Today Active since 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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Answered
Can someone with a free account (without MATLAB license) solve Cody problems and get badges?
I know dpb already mentioned it, but it's easy enough to test if you have such an account. I just solved the introductory Cod...

3 giorni ago | 0

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Answered
I have an image that is 234x432x4 size wise. I tried imshow() and image(), but it doesn't work. What do I use?
If the image is CMYK, hyperspectral, or simply a volumetric image, then this answer really doesn't apply. Admittedly, it's more...

3 giorni ago | 0

Answered
How to use imtile, montage or any other methods to concatenate images without affecting the resolution?
If you're using IPT imtile() or montage(), you can maintain the geometry of each sub-image by making sure the 'thumbnailsize' op...

4 giorni ago | 0

| accepted

Question


Change FEX submission to use offsite hosting
When creating a new submission on the File Exchange, you have the choice of: uploading to TMW's servers linking to GitHub lin...

9 giorni ago | 0 answers | 0

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answers

Answered
Change specific color in an image to another one
Consider the following example using the OP's original image and task. % Load image [idxpict,ct] = imread('iteration31.png')...

30 giorni ago | 0

Answered
How do I get coordinate from 2D image ?
What's wrong with just finding the maxima of the inputs themselves? % you have z as a function of x and y [x y z] = peaks(100)...

circa un mese ago | 0

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Answered
Setting overlap colours in plot with transparent layers
When using alpha properties to visualize the intersection of graphics objects, there isn't really a way to make the intersection...

circa 2 mesi ago | 0

| accepted

Answered
How can I use view a montage using Image Viewer App through imtool()?
You should be able to use imtile() instead of montage() with the same syntax in this particular case. The output of montage() i...

circa 2 mesi ago | 0

| accepted

Answered
How to modified maximum pixel value in logical array
I'm going to post this as a tentative answer. I doubt my interpretation of your intent is wholly correct, but it's probably cor...

circa 2 mesi ago | 0

Answered
Convert RAW File (images) to PNG
A .raw file can be a number of different things. I'm not familiar with .mhd files, so I can't comment on that. It's not clear...

circa 2 mesi ago | 0

Answered
problems with creating a multiplication table
R and C have no ':' in them. R and C are row vectors, because that's what 3:10 and 2:3:33 are. It's unclear what the behavior ...

circa 2 mesi ago | 0

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Answered
Hatchfill function not working
Both hatchfill() and applyhatch_pluscolor have been unmaintained for a decade now and predate the current graphics system. If y...

circa 2 mesi ago | 0

Answered
I used applyhatch_pluscolor to fill the bar chart, but the legend and coordinates text are blurred,
That FEX submission hasn't been maintained in over a decade and predates the current graphics system. It doesn't work unless yo...

circa 2 mesi ago | 0

| accepted

Answered
generating random particles effect to an image
This is built using MIMT tools: % parameters s = [500 300]; % output image size [height width] numspots = 20; % number of spo...

circa 2 mesi ago | 1

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Answered
heatmap color RGB data for manaully created image
The use of heatmap() is unnecessary. This is a basic use of indexed color. Generate a color table and find the indexes into it...

2 mesi ago | 0

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Answered
What non-built-in functions do you use frequently?
I know nobody needs a thread revival, but it's something that I'm constantly reminded of because I have to avoid it in posting t...

2 mesi ago | 0

Answered
Saving an imagesc file as .png without the white borders?
If you have an image and want to save the image, save the image. Don't display the image and then save a screenshot of the disp...

2 mesi ago | 0

Answered
sum a column per row with loops
I'm going to assume you mean to do a cumulative sum of rows: A = ones(5) % a smaller example B = cumsum(A,2)

2 mesi ago | 0

| accepted

Answered
How can i crop the image based on white pixel value
Assuming that the image is 2D, this is one way A = imread('pepcircmask.png'); imshow(A) % find the first and last row contain...

2 mesi ago | 0

Answered
Is Pixel Interpolation possible in MATLAB? If so, how?
You should be able to use regionfill() % a test array with a zero pixel A = uint8(randi([0 255],5,5)); A(3,3) = 0; imshow(A)...

2 mesi ago | 1

| accepted

Answered
unit 8 and im2double and white pixel
I think it was your comment I responded to earlier, so I suppose there's no harm repeating it here. Tools like imshow() and imwr...

2 mesi ago | 1

Answered
How to interpolate a closed polar plot
EDITED: You could enforce endslopes, but this is probably more accurate % the same fake data Angle = [0 90 180 270 360]; Ma...

2 mesi ago | 0

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Answered
Understand the algorithm(s) employed in imlocalbrighten function?
The majority of the work done by imlocalbrighten() is handled by imreducehaze(). The rest is just input parsing, inversion, and...

2 mesi ago | 1

| accepted

Answered
I'm trying to perform the XOR operation between a 4x4 block of an image and a pseudo-random matrix of size 4x4.
Use bitxor() on arrays of uint8 class. You'll have to cast your random array to match using uint8(). A = uint8([1 2 3]) B = u...

2 mesi ago | 0

| accepted

Answered
Save matrix as a spreadsheet image (in previous versions)
This is what I used to create the first image: tablesize = [3 4]; % size of table A = rand(tablesize); % some test data to fi...

2 mesi ago | 0

Answered
Using rgb2ind for colour animated gif
I posted this already as a comment in the other thread, but I'll put it here too: MIMT gifwrite() works to write I/IA/RGB/RGBA ...

2 mesi ago | 0

Answered
How can i define part of image to work on (Specific pixel range) not whole image ?
Depending on your needs, you may be able to use roifilt2(). Example Given a 2D (grayscale) image and a logical mask, roifilt2(...

2 mesi ago | 1

| accepted

Answered
Segment pink color spots from image
This is one example. A = imread('pink.jpg'); % HSV thresholds for pink areas th = [0.95 0.04; 0.15 1.00; 0.61 1.0...

2 mesi ago | 1

| accepted

Answered
Adding Specific Ratio of Noise to an Image
The 'salt & pepper' option is the only option with a density parameter. Salt & Pepper noise will affect a specified fraction of...

2 mesi ago | 0

| accepted

Answered
How can I delete part of a binary image?
If all you want to do is put a black region over that part of the image: myimage(310:end,150:300,:) = 0; Otherwise, you'll hav...

2 mesi ago | 0

| accepted

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