Answered
How CT projection image and intensity plot are related?
@Anand Ra in t = -1*(1/µ)*log(I./Io) note that I is a 2-D array, so the log is also a 2-D array, and thus t is also a 2-D ar...

3 years ago | 1

Answered
How do I calculate PNSR of an Image
There is a psnr function in the Image Processing Toolbox. help psnr

3 years ago | 0

Answered
Where can I find video files with the avi extension ?
To find all files under a top level folder, you can do it like this: % Specify the top level folder where the *.avi files are r...

3 years ago | 0

Answered
Best way to calculate color difference score
That's basically correct. What could possibly be improved is the image capture part, but you don't say anything about that. Ar...

3 years ago | 0

Answered
Histogram Equalization-Contrast Adjustment
Don't use histogram equalization. It's a common beginner misconception that it helps. It is not needed. First of all, it usua...

3 years ago | 0

Answered
How to use "imregionalmax" without using for loop
peaks = sort(AF_Nuni(i,imregionalmax(squeeze(AF_Nuni(i,:,:))))); The way you're indexing could be slowing you down. Normally y...

3 years ago | 1

Answered
I'm dealing with Speech compression using Linear Predictive Coding. When I run the code I get a few errors.
The error is clear: the file does not exist. Check the spelling and location. Perhaps add a file extension if the file has one...

3 years ago | 1

Answered
Read Excel and write output
What is p1, p2, and p3? You might try R = xlsread('Book1.xlsx') %% Excel sheet (Book1.xlsx) is in 'D' drive A = R(:, 1); B =...

3 years ago | 0

Answered
Matlab GUI to select and plot data from csv file.
Use the current figure, gcf: figPosition = get(gcf, 'Position'); Also see MAGIC - MATLAB Generic Imaging Component that has a...

3 years ago | 0

Answered
Mac Warning: Name is nonexistent or not a directory
Does the mac care about the direction of the slash in the path (Windows doesn't)? Try using all forward slashes. Try leaving o...

3 years ago | 1

Answered
xline - draw a partial line
You can use line or plot instead of xline

3 years ago | 0

Answered
I have basic understanding of MATLAB, how do i move forward
Best way(s) to master MATLAB? - MATLAB Answers - MATLAB Central

3 years ago | 0

| accepted

Answered
How can I remove the central pattern (near 0 hz value) correctly?
It looks like it's deleting the spectrum along the axes. If you just want the central spot, then just erase that: [rows, colum...

3 years ago | 0

Answered
Find brightest frame in video file
See my attached demo that runs through a video getting the mean R, G, and B, and gray scale brightness. Once you've run though ...

3 years ago | 1

| accepted

Answered
PROBLEMS WITH SAVING PATHFOLDERS
I noticed that you included the drive letter in one path but not the others. Try putting the drive letter in all paths. What o...

3 years ago | 0

Answered
create animation from several figures
See my attached movie demos, especially movie_made_from_plot and movie_made_from_surf.m.

3 years ago | 1

Answered
Object depth tracking with magnetometer
Since you don't know how the Z values change, you'll have to model that. So I'd map out a 3 by 3 (or more) grid that covers the...

3 years ago | 0

Answered
PROBLEMS WITH SAVING PATHFOLDERS
I'd say that you don't have the folderpath on your computer folderPath = '\path\folder\test'; or else the images are not in th...

3 years ago | 0

Answered
How to completely extract the green pixels from this image?
Try the Color Thresholder on the Apps tab of the tool ribbon. Use HSV color space, then click the Export function button on the...

3 years ago | 0

| accepted

Answered
Do I have to upgrade to Matlab 2020?
I'd say sure, but upgrade to R2023b, the latest, instead of R2020a. Can't hurt. Otherwise call delete(filename) before calling...

3 years ago | 0

Answered
How can I deform an image to fit a shape, but keep the same pixel values?
You cannot do it without "new" pixel values being interpolated especially if you enlarge the region. For example if the source ...

3 years ago | 0

Answered
Handwritten number recognition app
Yes, I'm pretty sure there is a simple deep learning example using transfer learning and the NIST numerical image data set. Sea...

3 years ago | 0

Answered
I want to use Interpole with Zero Padding
Why are you doing anything with fft? Just use interp1 xInterp = linspace(min(n), max(n), 5 * length(n)); x_interpolated =in...

3 years ago | 1

| accepted

Answered
My output text file continues to have a delimiter. How do I change this in my code?
You can go through each row of the table using fprintf to write whatever you want into a text file. Just don't write delimiters...

3 years ago | 1

Answered
Video and image analysis of microfluidics channel with a growing bubble. Calculate the size of the bubble.
After getting the binary image "L" you should have removed the background and then extracted the largest blob (assuming the bubb...

3 years ago | 0

Answered
Identify specific rectangular shape in image and measure distance
Try this. Adapt as needed. % Demo by Image Analyst clc; % Clear the command window. close all; % Close all figures (exce...

3 years ago | 1

| accepted

Answered
How to find the minimum area bounding box of a region returned from regionprops
Yes it is. Did you actually try to use the bwferet function? If not, you should.

3 years ago | 0

Answered
I am a 3rd year ECE UG student i know the basics of this matlab language but want to from the community about how to get advanced.....
See this link: Best way(s) to master MATLAB? - MATLAB Answers - MATLAB Central

3 years ago | 1

| accepted

Answered
How can I find the red areas?
Try thresholding. See my Image Segmentation Tutorial in my File Exchange: Image Analyst's File Exchange It's a generic, gener...

3 years ago | 0

Answered
implement some enhancement techniques
This looks like a homework problem. If you have any questions ask your instructor or read the link below to get started: How d...

3 years ago | 0