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how can i use image which is save in variable?

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romasha
romasha on 21 Jan 2014
Commented: romasha on 22 Jan 2014
in the following code i wanted to use gray image which saved in variable b for further use,but it gives an error "undefined b" on second line... kindly sort this out
CODE:
i=imread('C:\Users\Romesha\Desktop\eye.jpg');
b=rgb2gray(i);
imshow(b);
im = imread(b);
imshow(im);
  4 Comments
Walter Roberson
Walter Roberson on 21 Jan 2014
Good catch, Bruno. I got sidetracked by the "undefined b".
But to be more correct, you can use a variable in imread(), but it needs to be a variable that contains a string. For example,
F = 'C:\Users\Romesha\Desktop\eye.jpg';
im = imread(F);
romasha
romasha on 22 Jan 2014
this is the entire error message
  • * *Error in @(hObject,eventdata)gui('PB2_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating uicontrol Callback* * *
and respected sir i know the above answers already and i want to use that image which is store in variable b so how can i give the path of that image "im=imread(i want gray image which save in variable b in this paranthesis)"

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Answers (1)

Walter Roberson
Walter Roberson on 21 Jan 2014

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