Error saving PDF containing two images

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Lluis Roca
Lluis Roca 2020-5-6
评论： Lluis Roca 2020-5-7
I have a button that its aim is to save an image and its threshold version. When I run the code below, I get this error?
Error using mlreportgen.dom.Image
Invalid input for argument 1 (p0):
Value must be a character vector or string scalar.
How can I generate a report that include both of the images?
Code:
function ButtonPushed(app, event)
import mlreportgen.dom.*;
import mlreportgen.report.*
folder = 'E:/';
file = 'sh2.png'
fullFileName = fullfile(folder, file);
I= imread(fullFileName);
level = graythresh(I);
BW = imbinarize(I,level);
filter = {'*.pdf'};
[file, pathPDF] = uiputfile([folder,filter{1}])
if file ~= 0
d = Document('myPDF','pdf');
d.OutputPath = [pathPDF,file];
img1 = Image(fullFileName);
img1.Style = [img1.Style {ScaleToFit}];
img2 = Image(BW);
img2.Style = [img2.Style {ScaleToFit}];
append(d,img1);
append(d,img2);
close(d);
end

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采纳的回答

Rahul Singhal
Rahul Singhal 2020-5-7
Hi Lluis,
The error occurs at line:
img2 = Image(BW);
Error occurs because mlreportgen.dom.Image does not accept binary image as input but only accepts path of an image file.
You can first write the binary image to an output image file using imwrite and then use the generated image file path to create the DOM Image. For e.g.,
>> imwrite(BW, 'sample.png');
>> img2 = Image('sample.png');
Thanks,
Rahul

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