to create a loop to assign names

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Tugce Irem 2022-8-21

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评论： Tugce Irem 2022-8-21

Hello,

I'm analyzing multiple images at the same time, and in my function multiple different figures show different features. I wanted to create a code to determine each individual' specific name. here is my code to name the figures. This is not entire function but I only need to learn how to change the name. I don't know what I should write the line of k=

function AnalyzeImage(originalImage, lowThreshold, highThreshold)
fontSize = 14;
for k= [originalImage]
    figure(k); imagesc(originalImage); colormap(gray(256)); 
    title(k, 'FontSize', fontSize);
    impixelinfo;
end
...
end

I will be grateful if you could help me

Thank you

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Tugce Irem 2022-8-21

编辑：dpb 2022-8-21

在 MATLAB Online 中打开

Sorry for vague question. Here is the first part of my code and one of my image. I tried to create a loop but it doesn't work. I'm trying to change the title of each figure. I want to see actual name of the the image, instead of Original Image.

For example

When I write

AnalyzeImage2(flowerimage, 50, 150)

The image title should be 'flower image'

Please let me know if I need to explain more

Thank you for the answer

function AnalyzeImage2(originalImage, lowThreshold, highThreshold)
    fontSize = 14;
    binaryImage = (originalImage >= lowThreshold) & (originalImage <= highThreshold);
    binaryImage = imfill(binaryImage, 'holes');
    [labeledImage, numberOfBlobs] = bwlabel(binaryImage, 8);     % Label each blob so can do calculations on it
    coloredLabels = label2rgb (labeledImage, 'hsv', 'k', 'shuffle'); % pseudo random color labels
    % Display various images
    figure(); imagesc(originalImage); colormap(gray(256)); 
    title('Original Image', 'FontSize', fontSize);
    impixelinfo; % Set it up so user can mouse around over image and see (x,y) and Gray Level or RGB color in status bar in the lower left of the figure.
    end

dpb 2022-8-21

在 MATLAB Online 中打开

But when you write

AnalyzeImage2(flowerimage, 50, 150)

flowerimage is a variable name and you've set it somewhere to be that fixed name.

Somewhere that had to have been defined as being the image of a flower (or something else), probably in the name of the file in which the image resides, one would guess.

To make the code more generic, you need to hold those file name(s) as a variable and besides using it to open the file (also into a generic variable name), use the name part of the file as the title text. That presumes that that text is in the filename as wanted...

d=dir(fullfile('yourDataImagesFolder','*image.jpg'));   % find the .jpt files ending in "image"
for i=numel(d)                                          % iterate over the list returned
  [~,imageTitle]=fileparts(d(i).name);                  % get the name from the filename
  image=imread(fullfile(d(i).folder,d(i).name));        % read the file
  AnalyzeImage2(imageTitle,image, 50, 150)              % call the analysis routine with image, title
end

And then the function would need similar modification to use the new title variable something like--

function AnalyzeImage2(imageTitle, originalImage, lowThreshold, highThreshold)
    fontSize = 14;
    binaryImage = (originalImage >= lowThreshold) & (originalImage <= highThreshold);
    binaryImage = imfill(binaryImage, 'holes');
    [labeledImage, numberOfBlobs] = bwlabel(binaryImage, 8);     % Label each blob so can do calculations on it
    coloredLabels = label2rgb(labeledImage,'hsv','k','shuffle'); % pseudo random color labels
    % Display various images
    figure(); imagesc(originalImage); colormap(gray(256)); 
    title(imageTitle, 'FontSize', fontSize);
    impixelinfo; % Set it up so user can mouse around over image and see (x,y) and Gray Level or RGB color in status bar in the lower left of the figure.
end

The above function has some other peculiarities, however, in that the binaryImage and all the other machinations don't have any bearing on anything else...all that's done is to show the input image. One presumes other stuff there has been elided for brevity, maybe???

But, the point is, you've got to get the title text from somewhere or otherwise define it as the text to be displayed; I've just shown one way if the filens were named in a particular manner (and a not very flexible one at that). Otherwise, you need a database of names to display to go along with the images defined somehow/somewhere.

Tugce Irem 2022-8-21

Thank you so much

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Answer 1

Steven Lord 2022-8-21

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https://ww2.mathworks.cn/matlabcentral/answers/1782830-to-create-a-loop-to-assign-names#answer_1030130

在 MATLAB Online 中打开

If you're just using this to obtain the name of the variable in the workspace from which your function was called, use inputname but make sure to include some code to handle the case where the input argument doesn't have a name.

x = 1:10;
showInputName(x)
The name of the input argument is x
showInputName(1:10) % The input has no name
The name of the input argument is 
function showInputName(~)
fprintf("The name of the input argument is %s\n", inputname(1))
end

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to create a loop to assign names

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