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How to get the inside shape within my segmented image?
If "mask" is your binary image, you can get the interior holes by inverting the image. Then call imclearborder to get rid of th...

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What would be the best detector to classify objects with simple geometry and color such as a blue cube ?
That's a pretty simple problem. You don't have to use deep learning if you don't want to. Traditional methods would work fine....

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I am trying to measure the length of this laser in the image. For now I am using intensity profile but that gives me R G and B. Are there any other way you guys can recommend?
Try the Color Thresholder app. % Demo by Image Analyst clc; % Clear the command window. close all; % Close all figures (e...

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Why do I get license manager Error 114 after activation?
See the links on the right hand side of this page, or else see the FAQ: https://matlab.fandom.com/wiki/FAQ#After_installation,_...

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Correct the code for me please
I don't know what you're trying to do but this line: d(i,j) = (d(i,j-1) - d(i-1,j-1))/(x(i) - x(i-j)); when i and j are both 2...

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Doesn't show the result as an integer even though the result of the operation is an integer
See the FAQ: https://matlab.fandom.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_(or_similar)_not_equal_to_zero?

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how to measure the droplet spreading diameter from the series of images and also want to output in .xlxs file.
See my Image Segmentation Tutorial in my File Exchange: Image Analyst's File Exchange It's a generic, general purpose demo of ...

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Need a space in strcat comand
V = [1 2 3 4 5]; str = sprintf('R = %s', strjoin(string( V),', '))

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[Image Processing] Detect horizontal lines in image
Try a masked median filter, where you median filter the image, then find the bad lines, then replace only the bad lines with the...

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cant detect valid coins and segement them fully, have a deadline in 4 days
Looks like it should work. What values are in allSD? Maybe you need to pick a different threshold than 15. How are they deter...

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squares moving error in matlab
This doesn't make any sense: if xnew < 1 xnew > num_of_cells ; move_x = -move_x; end It should be something like i...

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What is "peaks" in tutorialApp?
peaks a built-in function that you can actually open up and look at in the editor. Do this at the command line: >> edit peaks....

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I want to rotate the cartoon present in this image.Can any of you help me how can I read this image on MATLAB and extract the points from pic and rotate it
@Mishqat it's not clear what you want to do and what your starting data is. Are you starting with an image and simply want to r...

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How to show decision region on iris data set for only 2 features?
Try using patch or fill

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How to draw a dynamic graph where the sum of the internal distances is a constant value?
"How to draw a dynamic graph...." <== If you have the coordinates, you can use plot3 To learn other fundamental concepts, inve...

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Area Calculation Using polyarea: Figure vs PNG
There is no spatial calibration when you save a figure, or a non-image graph in an axes on a figure. So the image you get upon ...

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how to use getvarname
I doubt your program requires it, unless you wrote it poorly. The FAQ shows you how to do this unwise operation and tells you w...

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colorbar tick distance to axes and label position
You can get the position property of both cbar handle, and the axes. ax = gca axesPosition = as.Position 2. The Position prop...

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measure the length in the image
Try this: % Tests curl for triggering stats analysis of laundry stain removal raw data. clc; % Clear the command window. c...

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Calculating Similarity between a single pixel and a surrounding region
I'd use delta e. I have a demo i can post tomorrow. what is the region? The 8 surrounding pixels?

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i need databases for hand gesture recognition
Go here to find groups working on gesture recognition: http://www.visionbib.com/bibliography/contentspeople.html#Face%20Recogni...

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How do I make a plot background black?
See this demo to show you how you can change just about everything by referring to it properly. % Demo to make a black graph wi...

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how to highlight my filamentous edges ?
It looks like your image is way overexposed. Try reducing the exposure. Try my attached fiber orientation demo.

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what happened to the blue bar in my Matlab user interface?
The blue margin indicates the extent of the section you are in, meaning that the blue bar runs from the starting line of the sec...

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How to calculate the distance between blood vessel edges?
You need to invert your binary image. The vessel should be white: binaryImage = ~storedStructure.BWfinal; binaryImage = bware...

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How to extract data from drawn images?
When you originally created the picture, just save the data at that time to a .MAT file using save. You can recall it later fr...

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Select dominated columns in a large matrix
How about (untested) [rows, columns] = size(F) itsDominated = false(1, columns); % Keep track of which columns are dominated. ...

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When calling a class (say, to convert types), are we calling a function?
I like to think of it like this. In standard object oriented programming (OOP) you have a "class" which is an object that is a ...

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How can I apply agglomerative hierarhical clustering based on the distance between regions?
Not sure why I didn't see your question years ago (since I already have a demo), but I agree that dbscan seems to be the algorit...

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Random maze solving algorithm with matrix
For a variety of maze-solving algorithms, including one by me and another by Steve Eddins (the leader of image processing team),...

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