Error using label2rgb...

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thar
thar 2016-9-14
评论： ThankGod Alexander 2022-7-30
This error was occurred when I was testing the Example of the " Multilevel image thresholds using Otsu's method" in Matlab 2015a. Can you please tell me why this error occurred and how to solve this?
link to the example : -
openExample('images/CompareThresholdingEntireImageVersusPlanebyplaneThresholExample')
>> I = imread('circlesBrightDark.png');
>> imshow(I)
Warning: Image is too big to fit on screen; displaying at 67%
> In images.internal.initSize (line 71)
In imshow (line 305)
>> axis off
>> title('Original Image')
>> thresh = multithresh(I,2);
>> seg_I = imquantize(I,thresh);
>> RGB = label2rgb(seg_I);
Error using label2rgb
Expected input number 1, L, to be two-dimensional.
Error in label2rgb>parse_inputs (line 128)
validateattributes(L,{'numeric','logical'}, ...
Error in label2rgb (line 49)
[label,map,zerocolor,order,fcnflag] = parse_inputs(varargin{:});

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采纳的回答

Walter Roberson
Walter Roberson 2016-9-14
You need to convert your image to greyscale to use that function.
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thar
thar 2016-9-15
Thank you very much.
ThankGod Alexander
ThankGod Alexander 2022-7-30
Thank you very much for this answer. I just encountered it and a quick search gave your answer and I was able to fix it

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