Steve Eddins
Last seen: Today
MathWorks
832 total contributions since 2006MATLAB user since 1987. MathWorker since 1993. Amateur French horn player. MATLAB design and development, image processing algorithms.
Image processing blog: https://blogs.mathworks.com/steve/
Steve Eddins's Badges
Contribute at least one answer each month for 6 consecutive months
Awarded to Steve Eddins on 02 Mar 2021
20 of your answers have been accepted
Awarded to Steve Eddins on 01 Oct 2020
Provide your first answer ever to someone else's question
Awarded to Steve Eddins on 20 Jul 2017
Solve a problem with a best solution
Awarded to Steve Eddins on 22 Dec 2020
Be the first to solve a problem
Awarded to Steve Eddins on 22 Dec 2020
Solve a community group
Awarded to Steve Eddins on 19 Nov 2020
Have 3 submissions connected to GitHub
Awarded to Steve Eddins on 03 Dec 2019
Your submissions were downloaded 100 or more times in a month
Awarded to Steve Eddins on 01 Nov 2019
Publish your first comment or rating
Awarded to Steve Eddins on 09 Oct 2019
Solve all the problems in Computation Geometry I
Awarded to Steve Eddins on 16 Nov 2020
Like a problem or solution
Awarded to Steve Eddins on 13 Nov 2020
Receive 25 likes on a problem you have created
Awarded to Steve Eddins on 01 Nov 2020
Solve all the problems in Introduction to MATLAB problem group
Awarded to Steve Eddins on 26 Oct 2020
Solve all the problems in Indexing V
Awarded to Steve Eddins on 23 Oct 2020
Solve Project Euler problems using Matlab
Awarded to Steve Eddins on 15 Oct 2020
Code is showing Undefined function 'pixelHull' for input arguments of type 'double'.
I wrote a function called pixelHull as part of my 16-Mar-2018 blog post. You can find the function listing near the bottom of th...
5 dagen ago | 0
| accepted
Binarize image for specific colour
Use the Color Thresholder app to generate the code needed to do this segmentation. See my 14-Oct-2019 and 25-Apr-2014 blog posts...
26 dagen ago | 0
Plotting signal of a region of interest
A possible explanation is that you have a variable called "size" or "mean" in your workspace. For example, if you have a variabl...
29 dagen ago | 0
How to apply a threshold value to the cell array
I think writing a for-loop would be most straightforward way to go. Something like this: for k = 1:numel(C) C_k = C{k}; ...
ongeveer een maand ago | 0
| accepted
How to change the font of a pie chart?
The text labels created by the pie function are not controlled by the font properties of the containing axes object. They are in...
ongeveer een maand ago | 1
| accepted
superimpose matrices (n,n,m) to (n,n,1)
Here are some options. Compute and plot the maximum value at each pixel: imagesc(max(a100,[],3)) Compute and plot the minimum...
ongeveer 2 maanden ago | 0
| accepted
Image conversion from uint16 to uint8 mismatch
im2uint8 is using a scale factor of (255/65535), not 1/256. Note that scaling the maximum of the uint16 range, 65535, by 1/256 ...
ongeveer 2 maanden ago | 1
| accepted
How do I map array values on a logical array
Use logical indexing. C = zeros(size(B)); C(logical(B)) = A
ongeveer 2 maanden ago | 1
| accepted
Create a 7x7 convolution kernel which has an equivalent effect to three passes with a 3x3 mean filter.
Convolution is associative: So, your 7x7 convolution kernel would be the convolution of the mean filters: Use the 'full' o...
ongeveer 2 maanden ago | 0
pgm image lossless compression
Write the image to a PNG file. The PNG format uses lossless compression. imwrite(A,'myfile.png') Read it back in using imread....
ongeveer 2 maanden ago | 0
Published
How imshowpair and imfuse work
In this post, I'll explore how imshowpair and imfuse work.Reason: I was curious.Last month, I wrote about registering...
ongeveer 2 maanden ago
Shade area in graph for multiple y-axes
I rearranged your code a bit, putting both of the first two plotting functions (patch and plot) after the call to yaxis left. I ...
2 maanden ago | 0
| accepted
How to add percent change in barplot?
If you want text labels instead of a line plot (Cris' suggestion), then try this code. It gets the Bar object as the output argu...
2 maanden ago | 1
| accepted
Neighbor and center points of matrix
See my 25-Feb-2008 blog post called "Neighbor indexing" for a general technique. You'll need to pay careful attention to what h...
2 maanden ago | 1
Fourier Transform of a signal
The fft function in MATLAB computes something called the discrete Fourier transform. Your problem here is asking you to find som...
2 maanden ago | 0
How can I create a 3D array?
Try something like this: for i = 1:n-1 next_image = uigetfile('*p*'); ImageArray = cat(3,ImageArray,next_image); end...
2 maanden ago | 0
| accepted
customize export setup to generate SVG
Try this: h = findall(fig,'-property','FontName'); set(h,'FontName','San Serif'); print(fig,'-dsvg','mygraphic.svg')
2 maanden ago | 0
Published
Registering Hand-Held Pictures
The typical modern French* horn, pictured below, has about 23 total feet of tubing. At the beginning and the end, the tubing...
2 maanden ago
load rwb gives error
You're looking for a file called rwb.mat. Once you find it, put it in your current working folder or in a folder that's on the M...
3 maanden ago | 1
| accepted
How to get the x and y coordinates of the each marker in a frame?
I used the Color Thresholder app to get code that segments your image based on the green color of the markers. Then I used regio...
3 maanden ago | 0
Give an unknown number of parameters to feval
Put your parameters in a cell array and then use the syntax that expands a cell array into a comma-separated list: out = feval(...
3 maanden ago | 0
| accepted
Infinite Recursion in own Levenberg-Marquardt Code
I see that korrektur is calling itself recursively. I noticed also that the recursive call appears to be identical to the top-le...
3 maanden ago | 1
Text increments of the x-axis
Sure, you can set the XTicks property of the axes object directly. ax = gca; ax.XTicks = [1 2 3]; A shortcut for this is: xt...
3 maanden ago | 0
Solved
Find nth maximum
Find nth maximum in a vector of integer numbers. Return NaN if no such number exists. x = [2 6 4 9 -10 3 1 5 -10]; So ...
3 maanden ago
Solved
Create an index-powered vector
Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...
3 maanden ago
Solved
Symmetry of vector
Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] ...
3 maanden ago
imshow doesn't display png image file
Your image is stored in the PNG file as unsigned 16-bit integers. When imshow displays a uint16 image, it uses the unsigned 16-b...
3 maanden ago | 1
| accepted
Solved
Create an n-by-n null matrix and fill with ones certain positions
The positions will be indicated by a z-by-2 matrix. Each row in this z-by-2 matrix will have the row and column in which a 1 has...
3 maanden ago
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