How to access JPG files from folder then display them?

Question

Jacob Jakileaszek 2016-6-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/291435-how-to-access-jpg-files-from-folder-then-display-them

回答： Walter Roberson 2016-6-21

clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
imtool close all; % Close all imtool figures.
clear; % Erase all existing variables.
workspace; % Make sure the workspace panel is showing.
fontSize = 20;
% Get list of all JPG files in this directory
% DIR returns as a structure array.  You will need to use () and . to get
% the file names.
imagefiles = dir('C:\Users\Jake\Desktop\ImagesMatlab.jpg');      
nfiles = length(imagefiles);    % Number of files found
for ii=1:nfiles
   currentfilename = imagefiles(ii).name;
   currentimage = imread(currentfilename);
   images{ii} = currentimage
end
% 
% % Read in standard MATLAB color demo image.
% rgbImage = imread('Edmund comp room ambient flash off.jpg');
% [rows columns numberOfColorBands] = size(rgbImage);
% subplot(2, 2, 1);
% imshow(rgbImage, []);
% title('Original Color Image', 'Fontsize', fontSize);
% set(gcf, 'Position', get(0,'Screensize')); % Maximize figure.
% 
% 
% % Extract the individual color planes.
% redPlane = rgbImage(:, :, 1);
% greenPlane = rgbImage(:, :, 2);
% bluePlane = rgbImage(:, :, 3);
% 
% % Let's get its histograms.
% [pixelCountR grayLevelsR] = imhist(redPlane);
% subplot(2, 2, 2);
% bar(pixelCountR, 'r');
% title('Histogram of red plane', 'Fontsize', fontSize);
% xlim([0 grayLevelsR(end)]); % Scale x axis manually.
% xlabel('8 Bit Scale 0-Black 255-White of RGB Color Model')
% ylabel('Relative Number of Pixels in Image')
% 
% [pixelCountG grayLevelsG] = imhist(greenPlane);
% subplot(2, 2, 3);
% bar(pixelCountG, 'g');
% title('Histogram of green plane', 'Fontsize', fontSize);
% xlim([0 grayLevelsG(end)]); % Scale x axis manually.
% xlabel('8 Bit Scale 0-Black 255-White of RGB Color Model')
% ylabel('Relative Number of Pixels in Image')
% 
% [pixelCountB grayLevelsB] = imhist(bluePlane);
% subplot(2, 2, 4);
% bar(pixelCountB, 'b');
% title('Histogram of blue plane', 'Fontsize', fontSize);
% xlim([0 grayLevelsB(end)]); % Scale x axis manually.
% xlabel('8 Bit Scale 0-Black 255-White of RGB Color Model')
% ylabel('Relative Number of Pixels in Image')

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Answer 1

Walter Roberson 2016-6-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/291435-how-to-access-jpg-files-from-folder-then-display-them#answer_226242

在 MATLAB Online 中打开

projectdir = 'C:\Users\Jake\Desktop';
imagefiles = dir( fullfile(projectdir, '*.jpg') );      
nfiles = length(imagefiles);    % Number of files found
for ii=1:nfiles
   currentfilename = fullfile(projectdir, imagefiles(ii).name);
   currentimage = imread(currentfilename);
   image_names{ii} = currentfilename;
   images{ii} = currentimage
end
for ii = 1 : nfiles
    imshow(images{ii});
    title(image_names{ii});
    pause(1);
end