I want to get the contour of only red bird in the image

Hi,

Can any one help, I want to see the contour of birds and then separately contour of red colour bird in the image only. Image attached!

I have tried to get the contour but getting this error.

Code:

I = imread('birds.jpg');
imshow(I)
I0 =rgb2gray(I);
imshow(I0)
figure;
imcontour(I0,2)

Error:

Error in imcontour (line 44)

contour(x,y,a,extra_args{:});

Error in contour (line 9)

imcontour(I0,2)

[Cris LaPierre]

What version of MATLAB are you using? I ran your code and did not get any errors.

[muhammad choudhry]

Please see the screenshot, still getting the error.

version 2020

Answer 1

[Cris LaPierre]

Change the name of your file to something other than contour. Then in the command window, type clear contour and press enter.

Contour is the name of a MATLAB function that is used in lmcontour. However, due to MATLAB's precedence, it is using your script instead, causing the error.

[muhammad choudhry]

Hi,

Thanks it resolve the first problem I am getting contours of every bird in the image. Second issue is I only want the contour of red bird (2nd one from the left) is there any way I pick up the colour from red bird and gives the command in the code in which it will only capture the red bird contour.

Thanks.