i have Error using edge Expected input number 1, I, to be one of these types:

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olivio gusmao
olivio gusmao 2020-5-20
评论： darova 2020-5-20
citra = handles.image;
tresH = 0.1;
citraGray = rgb2gray(citra);
citraSobel = edge('citraGray', tresH, 'sobel');
axes(handles.axes2);
imshow(citraSobel);

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