App designer - problem with thresholding image
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Hi folks,
I have the app attached, in which I am encountering two issues. Firstly, when trying to threshold an image and displaying the thresholded image, it would appear my function calls aren't working as the image displayed is not thresholded. (ResinThreshold function works in live editor, but not when called in app designer). The thresholding function is below.
Thanks
function ResinThreshold(app)
imgGrey = rgb2gray(app.img);
[counts, ~] = imhist(imgGrey, 255);
T = otsuthresh(counts);
BW = imbinarize(imgGrey, T);
BW = bwareaopen(BW, 3000);
BW = imfill(BW, 'holes');
BW = bwperim(BW);
BW = imdilate(BW, ones(5));
BW = imerode(BW, ones(3));
BW = imfill(BW, 'holes');
app.img = app.img.*repmat(uint8(BW),[1 1 3]);
end
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採用された回答
Image Analyst
2021 年 4 月 11 日
You need to display the output image
imshow(app.img);
5 件のコメント
Image Analyst
2021 年 4 月 11 日
編集済み: Image Analyst
2021 年 4 月 11 日
I ran it but didn't know what to do. There are no instructions. You should do what I do. Have a listbox listing all the images, then a series of controls (checkboxes, pushbuttons, etc.) that say "Step 1 : select an image", "Step 2 : Select any options", "Step 3 : Mark Points", "Step 4 : Analyze selected ponts" or whatever. That will essentially guide the user through the various steps without a user manual or training. Otherwise, attach the software manual for it (though I'm not sure I'll read it if it's too lengthy).
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