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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
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...

alrededor de 16 horas ago | 0

| accepted

Submitted


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

alrededor de 16 horas ago | 128 downloads |

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Submitted


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

alrededor de 17 horas ago | 13 downloads |

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Submitted


Colorspace Conversion Tools
Bidrectional image conversion for HSI, HSL, HWB, HSY, HuSL, LCH, and others

alrededor de 17 horas ago | 12 downloads |

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Submitted


Simple DTMF Encoder & Decoder
Simple tools for demonstrating encoding and decoding a sequence of DTMF tones.

alrededor de 17 horas ago | 10 downloads |

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Submitted


A (slightly) more robust version of when()
Find the MATLAB version when a given function was introduced.

alrededor de 18 horas ago | 1 download |

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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...

6 días 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')...

26 días 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)...

30 días ago | 0

| accepted

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...

alrededor de 2 meses 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...

alrededor de 2 meses 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...

alrededor de 2 meses 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...

alrededor de 2 meses 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 ...

alrededor de 2 meses ago | 0

| accepted

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...

alrededor de 2 meses 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...

alrededor de 2 meses 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...

alrededor de 2 meses ago | 1

| accepted

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...

alrededor de 2 meses ago | 0

| accepted

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...

alrededor de 2 meses 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...

alrededor de 2 meses 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)

alrededor de 2 meses 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 meses 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 meses 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 meses 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 meses ago | 0

| accepted

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 meses 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 meses 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 meses 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 meses 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 meses ago | 0

| accepted

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