how to take average from the gait energy image or from silhouette?

average of gait energy image

Answer 1

[Gautam]

Hello Ankit

An easy way to accomplish this task is to read all the images you have in the folder and append them into an array and then take the average along the 3rd dimension.

Assuming that all the images are of the same dimension, here’s the code that demonstrates this:

% Reading the images into an array 
folderPath = 'path/to/your/folder'; 
imageFiles = dir(fullfile(folderPath, '*.png')); 
imageArray = []; 
for k = 1:length(imageFiles) 
    imagePath = fullfile(folderPath, imageFiles(k).name); 
    img = imread(imagePath); 
    
    % Convert the image to grayscale if it's RGB 
    if size(img, 3) == 3 
        img = rgb2gray(img); 
    end 
    
    % Append the image to the array 
    if isempty(imageArray) 
        imageArray = img; 
    else 
        imageArray = cat(3, imageArray, img); 
    end 
end 
% Calculating the average image along the third dimension 
averageImage = mean(imageArray, 3); 
imshow(uint8(averageImage));

If your images are not of the same size, you can resize them using the “imresize” function

Here are some useful documents that you can refer to:

cat: https://www.mathworks.com/help/matlab/ref/double.cat.html

imresize: https://www.mathworks.com/help/matlab/ref/imresize.html