Error using label2rgb...

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{:});

 采纳的回答

Walter Roberson
Walter Roberson 2016-9-14

2 个投票

You need to convert your image to greyscale to use that function.

4 个评论

I used the original image from the example by downloading it. DO i have to convert it to greyscale ?
This is the image i used
http://in.mathworks.com/help/examples/images/SegmentImageIntoThreeLevelsUsingTwoThresholdsExample_01.png
Yes. Although the image only visually looks like grayscale, it is an RGB image.
Thank you very much.
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

请先登录,再进行评论。

更多回答(0 个)

类别

帮助中心File Exchange 中查找有关 Convert Image Type 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by