Question

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...

2 years ago | 1 answer | 0

Question

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...

2 years ago | 2 answers | 0

Question

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...

2 years ago | 2 answers | 0

Question

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...

2 years ago | 3 answers | 0

Question

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...

2 years ago | 1 answer | 0

Question

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...

4 years ago | 0 answers | 0

Question

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? ...

7 years ago | 1 answer | 0

Question

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? ...

8 years ago | 1 answer | 0

Question

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...

8 years ago | 1 answer | 0

Question

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...

8 years ago | 1 answer | 0

Question

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 ...

8 years ago | 1 answer | 0

Question

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...

8 years ago | 1 answer | 0

Question

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...

8 years ago | 0 answers | 0

Question

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...

8 years ago | 3 answers | 0

Question

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 = ...

8 years ago | 5 answers | 2

Question

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...

9 years ago | 1 answer | 0

Question

I found this code demo for pca and I think that it shows that pca is literally just making the dimensions really small. The line of code X is the one doing all fancy modes of the image not pca. Is my understnading correct or am I missing something?

I = double(imread('peppers.png')); X = reshape(I,size(I,1)*size(I,2),3); coeff = pca(X); Itransformed = X*coeff; I...

9 years ago | 2 answers | 0

Question

problems with a for loop within a switch statement

I am creating a code where there is a for loop within a switch statement. I want the switch statement in there because I want ...

9 years ago | 1 answer | 0

Question

I am using SSIMVal in order to determine the similaritiy between images, what can I use to determine the cutoff point?

I know the closer to 1 the closer the images are in similarity but what exactly determines when close is not close enough? Like ...

9 years ago | 0 answers | 0

Question

Why am I getting Subscript indices must either be real positive integers or logicals?

Here is the part of my code giving me problems: channelToCorrelate = A; %A is where the modes are in real space correla...

9 years ago | 1 answer | 0

Question

How can I match a small part of an image to its whole image?

Let's say I have an image of a flower, I cut out 3 seemingly identical smaller images of petals from that flower. Now without si...

9 years ago | 1 answer | 0

Question

Hello all, I have a signal defined by the below. I want to take the Matlab FFT of this signal but I got a plot that does is not the Fourier Transform. Can someone direct me on how to be able to compute the FFT of my signal? Thanks Mates!

Signal defined by: %% Time specifications: Fs = 8000; % samples per second dt = 1/Fs; ...

9 years ago | 1 answer | 0

Question

How do you define this function?

I have at the top of the script function [v, v_hat, tau] = VMD_2D(signal, beta, omega, K, DC, init, tol) for example. Wh...

9 years ago | 1 answer | 0

Question

Can some explain why when I tried to display two images side by side it not only didn't display the two images side by side but displayed one image that now had green in it.

I used imshowpair(I,B); (what I named the images) and it gave me one of my images with green in it. My only explanation is that ...

9 years ago | 2 answers | 0

Question

Cluster Data with A self orgnaizing Map

Can someone please explain what it means to cluster data with a self organizing Map? I looked up the description in mat lab and ...

9 years ago | 0 answers | 0

Question

How can I group similar parts of images together with a for loop?

I have a code that finds areas with a specific repeating pattern which is represented by a symbol,Omega, with this knowledge can...

9 years ago | 0 answers | 0

Question

Matching Filtered Histograms to an image

Can filtered histograms be from the same image if they looked the same?

9 years ago | 1 answer | 0

Question

Histogram and median filters...AGAIN

Previously I applied a filter to a histogram and attained a slope. I am still waiting for some insight into what the slope might...

9 years ago | 1 answer | 0

Question

Histogram Processing and median filters

I performed a median filter of a histogram and it resulted in a slope. Is the slope inversely proportional to the degree of bins...

9 years ago | 0 answers | 0

Question

Applying a Guassian Filter to a histogram

I used the fspecial function to apply the guassian filter to the histogram, would this be how it is applied? Would this be how ...

9 years ago | 1 answer | 0