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**Content Feed**

Question

why do I get the error Unrecognized function or variable 'script1'.

Someone sent me a m file called script1, but when I run it, it says "Unrecognized function or variable 'script1'." how can i ...

7 dagar ago | 0 answers | 0

### 0

answersQuestion

can I take pca analysis of columns extracted from pixel values of a converted to gray image?

starting columns and ending columns I made a code that outputs the pixel values of the columns from an image. meanpix...

8 dagar ago | 1 answer | 0

### 1

answerQuestion

What method can I use for background subtraction before performing analysis on my image?

Hi, i am exploring matlab methods for personal growth and i want to determine how to: perform background substraction contra...

13 dagar ago | 1 answer | 0

### 1

answerQuestion

how do I filter noise and background objects from images?

i have images that have these cylindrical objects that i want removed before doing analysis? How do I remove them? Thank you

13 dagar ago | 3 answers | 0

### 3

answershow do I draw discriminatory lines in an image to calculate the area in each of those regions?

Will that method also allow me to calculate the area within that region too? Such that each curved line is spaced evenly through...

18 dagar ago | 0

Question

how do I draw discriminatory lines in an image to calculate the area in each of those regions?

Hello, I am exploring matlab and I was wondering how do i draw circular lines that classify particular regions of that image? So...

19 dagar ago | 2 answers | 0

### 2

answersQuestion

why am I getting an error for this tutorial when adapted to my image? how can I fix this error:

clc; % Clear command window. clear; % Delete all variables. close all; % Close all figure windows except those created by imto...

ungefär en månad ago | 1 answer | 0

### 1

answercompare pixel values to each other? Is ther afunction in Matlab that can analyze the composition of an image as a function of distance?

from… other regions of the image

ungefär en månad ago | 0

Question

compare pixel values to each other? Is ther afunction in Matlab that can analyze the composition of an image as a function of distance?

I am interested in looking at how the image changes over a distance within the image, any recommendations? Thanks!

ungefär en månad ago | 2 answers | 0

### 2

answersQuestion

error in pca code

hello I am trying to determine the pca graph for a couple of images but I get errors: rng 'default' M = 7; % Number of obser...

ungefär 2 månader ago | 1 answer | 0

### 1

answerQuestion

Is it possible to make a bar graph depiction of SSIM values? How?

I have ran my code for SSIM and I now want to depict the results in a bar graph format. How would I do that please?

2 månader ago | 2 answers | 0

### 2

answersQuestion

Determining pixel clarity in different images

hello all I was wondering if there is a way to measure the clarity of an image? for ex, if you have a fuzzy image or an image t...

3 månader ago | 1 answer | 0

### 1

answerQuestion

how do save them all up and make a table with the values from all of my images?

my code has a table wth only one row in it and all 3 columns the same??? How do I save them all up and make a table with the va...

6 månader ago | 1 answer | 0

### 1

answerQuestion

Why do I get this error of the '=' operator? I am trying to get the individual mean values of the blobs of pixels (in the image there are blobs of pixels and I want each mean)

Unsupported use of the '=' operator. To compare values for equality, use '=='. To pass name-value arguments using the name=value...

6 månader ago | 1 answer | 0

### 1

answerQuestion

I took z stack images with a microscope. Can I read them in as z stacks and Matlab convert them to single combined image with range?

Hello! I have an image taken with z stacks (image taken with a confocal that measures an area at different focal lengths), I wo...

6 månader ago | 1 answer | 0

### 1

answerQuestion

how do I threshold pixels in an image and convert the background pixels to nothing instead of zero?

I want to create a threshold for the pixels then set them to nothing. here is what I have thus far: %set a pixel threshold c...

6 månader ago | 2 answers | 0

### 2

answersQuestion

error in processing multiple images in a loop code

hello, a reknowned responder (walter robinson) suggested the following code to process multiple images and count blobs and then...

7 månader ago | 2 answers | 0

### 2

answersQuestion

How can I determine the cluster of pixels in an image that are red or green and quantify how many of the clusters are green or red?

I have an image that has small red or green circles per image. Each image could have up to 30 or so red or green circles per ima...

8 månader ago | 3 answers | 0

### 3

answersQuestion

I would like to determine the average of a region of pixels within an image and quantify it automatically. How can I do that?

Hello, I have an .lsm image and with a single color channel. Each image has a couple of regions of pixels that I would like t...

8 månader ago | 1 answer | 0

### 1

answerQuestion

What code can I use to get a system of equations to individually add up to a large sum?

Note: They can not all be equal to each other. I could guess but it'd be repitive and tedious and easy to make a mistake. Its f...

nästan 3 år ago | 0 answers | 0

### 0

answersQuestion

How to plot f(x) =|x| in matlab

Hi I am trying to make this plot which requires this graph, learning matlab more and more, can someone help me to learn this? ...

nästan 6 år ago | 1 answer | 0

### 1

answerQuestion

What does this function do in matlab?

Say I have D = D(somevector); and A = A(:,somevector); Does the former make this a column? What is it doing if not? ...

nästan 7 år ago | 1 answer | 0

### 1

answerQuestion

Why does the inner dimensions of the last line of my code not agree?

% subtract off the mean for each dimension mn = mean(data,2); mn2 = mean(data2,2); data = double(data); data2 = do...

ungefär 7 år ago | 1 answer | 0

### 1

answerQuestion

Has anyone been offered this before? If so, what are they saying they would essentially program for me?

Hello, Greetings from [www Matlabers dot xyz] ... This is an offer that brings solutions for your Matlab Code problems + A FRE...

ungefär 7 år ago | 1 answer | 0

### 1

answerQuestion

Matrix dimension must agree to use .*

I debugged my code and checked my workspace variables, and when I loaded in the two images their numbers were identical (matrix ...

ungefär 7 år ago | 1 answer | 0

### 1

answerQuestion

What does zero padding mean?

Integral image zero-pads the top and left side of the output integral image, by this do they mean, are they referring to the pad...

ungefär 7 år ago | 1 answer | 0

### 1

answerQuestion

Standard PCA code, finidng the eigenvalues of a non square matrix

In a PCA algorithm, you need to find the eigenvalues of a covariance matrix in order to derive the 1st algebraic solution to PCA...

ungefär 7 år ago | 0 answers | 0

### 0

answersQuestion

Integers can only be combined with integers of the same class, or scalar doubles

Error using - Integers can only be combined with integers of the same class, or scalar doubles. Error in Code (line 27) d...

ungefär 7 år ago | 3 answers | 0

### 3

answersQuestion

Can I use PCA effectively on a greyscale image?

Hello! I found this code online: I = double(imread('peppers.png')); X = reshape(I,size(I,1)*size(I,2),3); coeff = ...

ungefär 7 år ago | 5 answers | 2

### 5

answersQuestion

what is a software phantom?

I think it has something to do with images although when I tried googling it this white small airplane model looking object floo...

mer än 7 år ago | 1 answer | 0