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why active contour always produce an error?

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Walaa
Walaa 2022-9-14
编辑： Walter Roberson 2022-9-14
I am using this code to segement a grayscale image and produces an error in activecontour([A, mask, N, method, smoothfactor,contractionbias] = parse_inputs(args{:});
that is the code i use;
I = imread('after opening.jpg');
imshow(I)
r = drawrectangle;
mask = createMask(r);
bw = activecontour(I,mask,200,'edge',1,.3);
hold on;
visboundaries(bw,'Color','r');
figure
imshow(labeloverlay(I,bw));
How could this be solved?

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Walter Roberson
Walter Roberson 2022-9-14
编辑：Walter Roberson 2022-9-14
bw = activecontour(I,mask,200,'edge',1,.3);
'edge' is a positional keyword, not a name-value pair. There are no positional values expected after 'edge'. The 1,.3 is unexpected.
It is not clear to me what you were trying to do at that point, but my guess is that you want either
'SmoothFactor', 1, 'ContractionBias', 0.3
or possibly
'SmoothFactor', 1.3

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