Plz Help Me im getting da error "Index exceeds matrix dimensions. "

Error in ==> rgb2hsi at 5 rgb_g=rgb(:,:,2);

Error in ==> color at 2 img_hsi = rgb2hsi(I);

Error in ==> com at 3 c=color(I);

Error in ==> untitled>compare_Callback at 140 com(imgname);

Error in ==> gui_mainfcn at 96 feval(varargin{:});

Error in ==> untitled at 42 gui_mainfcn(gui_State, varargin{:});

Error in ==> guidemfile>@(hObject,eventdata)untitled('compare_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

Answer 1

[Jan]

The error occurs, when you access rgb(:,:,2). This means that rgb does not have a 3rd dimension, most likely because it is either a grey-scale or indexed image. A function for image processing must catch such exceptions, because the user can provide such a file easily as input.

[SASHI]

Plz tel me hw 2 solve.. im new to matlab.. wer i hav 2 change.. im giving colored image as input

[Jan]

I do not like to be contacted by email. Now I've replace my mail address by an invalid one.

I cannot answer, where you should change your code, when you do not show us the code.

[SASHI]

function hsi = rgb2hsi(rgb) rgb = im2double(rgb); r=rgb(:,:,1); g=rgb(:,:,2); b=rgb(:,:,3); num = 0.5 ((r - g) + (r - b)); den = sqrt((r - g).^2 + (r - b).(g - b)); theta = acos(num./(den + eps)); H=theta; H(b>g) = 2*pi - H(b>g); H=H/(2*pi); % calculates Hue value num = min(min(r, g), b); den=r+g+b; den(den == 0) = eps; S = 1 - 3.*num./den; % calculates Saturation value H(S == 0) = 0;

I=(r+g+b)/3; % calculates Intensity value hsi=cat(3,H,S,I); end

[SASHI]

im getting one more error ??? Error using ==> strfind Input strings must have one row.

Error in ==> imread at 282 if (strfind(filename, '://'))

wen converting the data into rgb2gray

grayimage=rgb2gray((imread(imagename)));

function []=com(imagename) c=color(imagename); t=curvelet(imagename); imagename=imread(imagename); grayimage=rgb2gray((imread(imagename))); s=shape(grayimage);