Reading the arranged file name

Question

Ravin Rayeok 2020-10-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/623713-reading-the-arranged-file-name

评论： Ameer Hamza 2020-10-23

采纳的回答： Ameer Hamza

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Hey need some assitance here,

I have 150 Images with the name of 1 until 150.

My code read the image as 1 10 100 101 etc instead of 1 2 3

So, instead of renaming my images 001 002 003 etc.

How to create a code to read and process my images in order of 1 2 3 4.... n

image_folder = 'F:\Microfluidic_Experments_Back_Up_May_2020\GEA\2020-09-02_Gea_aqeous_phase_10cP_Oil\2020-09-02_10-57-35'; %  Enter name of folder from which you want to upload pictures with full path  
	  
filenames = dir(fullfile(image_folder, '*.jpg'));  % read all images with specified extention, its jpg in our case  	
total_images = numel(filenames);   % count total number of photos present in that folder  
for n = 1:total_images  
f= fullfile(image_folder, filenames(n).name);         % it will specify images names with full path and extension  
our_images = imread(f);          % Read images    
figure (n)                           % used tat index n so old figures are not over written by new new figures  
   
%J = imrotate(our_images,90,'bilinear','loose');  
%p=ginput(2)  
K=imcrop(our_images,[1343 8 5581 5496]);  
%imshow(K);  
red=K(:,:,1);  
green=K(:,:,2);  	
blue=K(:,:,3);  
%d=impixel(K);          %Manually Show Pixel Value 
  
% Get the Water mask  
OilMask = red > 180 & green > 170 ;   
% Get the Bubble mask  
PolyMask = red > 210  & green > 215  & blue > 170;  
% Make Water mask green  
red(OilMask) = 0;  
green(OilMask) = 255;  
blue(OilMask) = 0;  
% Make the Bubble mask blue  
red(PolyMask) = 0;  
green(PolyMask) = 0;  
blue(PolyMask) = 255;  
% Recombine separate color channels into a single, true color RGB image.  
rgbImage2 = cat(3, red, green, blue);  
%subplot(2, 1, 2);  
  
%Water Pixel Sum  
OilPixels = rgbImage2(:,:,1) == 0 & rgbImage2(:,:,2) == 255 & rgbImage2(:,:,3) == 0;  
numOilPixels(n) = sum(OilPixels(:));  
%Bubble Pixel Sum  
PolyPixels = rgbImage2(:,:,1) == 0 & rgbImage2(:,:,2) == 0 & rgbImage2(:,:,3) == 255;  
numPolyPixels(n) = sum(PolyPixels(:));  
imshow(rgbImage2);
% numOil(n) = numel(OilPixels);
% numPoly(n) = numel(PolyPixels);
%SAVING FIGURE  
path='F:\Microfluidic_Experments_Back_Up_May_2020\GEA\2020-09-02_Gea_aqeous_phase_10cP_Oil_MATLAB_RESULT\Binary Image';  
saveas(figure(n),fullfile(path,['Figure' num2str(n) '.jpeg']));  
%imshow(our_images)                  % Show all images  
close  
 end  

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Answer 1

Ameer Hamza 2020-10-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/623713-reading-the-arranged-file-name#answer_522423

natsort() from FEX is exactly made for such cases: https://www.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort.

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Stephen23 2020-10-23

编辑：Stephen23 2020-10-23

"How doyou put it in the code?"

The M-file itself, the HTML documentation, and also the linked webpage all have plenty of examples, so you should not have any difficulty finding an example similar to your task and following it. It can be called just like any other function.

"I tried and it said undefined function or variable"

Just like all other code available on MATLAB File Exchange you will need to click the big blue "Download" button (top right corner of the page), then unzip the file into your MATLAB Search Path (e.g. the current directory). Then you will be able to use it, following its documentation of course.

I strongly recommend using natsortfiles instead of natsort.