MATLAB Answers

representation of many curves

1 view (last 30 days)
cyrine tijani
cyrine tijani on 17 Apr 2021
Edited: KALYAN ACHARJYA on 18 Apr 2021
hi i have 25 images i want to select 6 pixels and follow each point during the 25 images then represent 6 curves in one axis i hope that u get me
any help ?
  3 Comments
Walter Roberson
Walter Roberson on 17 Apr 2021
It is the same requirement, and the same discussion. We are working through it with the person there.

Sign in to comment.

Answers (1)

KALYAN ACHARJYA
KALYAN ACHARJYA on 18 Apr 2021
Edited: KALYAN ACHARJYA on 18 Apr 2021
Snippet:
% Images Folder Directory
% Call the images one by one, there are multiple simmilar question, please check
% Load any one image and get the size
imgae_data=rgb2gray(imread(image_file)); %Considering Gray Image
[r,c]=size(image_data);
%To select six pixels can be done in two ways
%One approach using randi function
x=randi([1,r],[1,6]);
y=randi([1,c],[1,6]);
% 2nd Approach using pixelinfo
% Now call the 25 images one by one
pix_data=cell(25,i);
for i=1:25
%Read 1st images
% Get the 6 pixels values using x,y
image_data=image1; %when i=1
% Get the pixel form the image at x,y
pix_data{i,1}= % array with 6 pixels value
end
Once done, pix_data is a cell array with 25 elements and individual cell elements having 6 pixels value
pix_data=cell2mat(pix_data);
See pix_data details
>> whos pix_data
Name Size Bytes Class Attributes
pix_data 25x6 1200 double
Next plot the pix_data with individual column wise, you will get 6 curves.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!