how to convert char array to two dimension image

hello my gui brows an image and I want to apply edge method on this image but the problem that when i brows image it appear as string , so i cant apply edge method?? can anyone tell me how to solve this problem please ?

[Walter Roberson]

Please post your code.

It sounds like you might be trying to work on the name of the file rather than the content of the file.

[sallam tanna]

function brows_Callback(hObject, eventdata, handles)

[filename pathname] = uigetfile({'*.tif'},'File Selector');

image = strcat(pathname, filename);
axes(handles.axes1);
imshow(image)
complete = strcat(pathname,filename);
set(handles.path,'string',complete);

% here the problem.. how can I apply edge method ?

[~, threshold]  = edge(image, 'sobel');
fudgeFactor = .5;
BWs = edge(image,'sobel', threshold * fudgeFactor);
axes(handles.axes2);
imshow(BWs)

thank you in advance

Answer 1

[Walter Roberson]

1. Do not name a variable image
2. You need to read the content of the image file using imread()
3. It is recommended to use fullfile() to construct the file names instead of strcat

[sallam tanna]

function brows_Callback(hObject, eventdata, handles)

[filename pathname] = uigetfile({'*.tif'},'File Selector');

img = strcat(pathname, filename); axes(handles.axes1); imshow(img) complete = fullfile(pathname,filename); set(handles.path,'string',complete); X = imread(img);

% the same error here [~, threshold] = edge(X, 'sobel');

the same problem ! :(

[sallam tanna]

I solve the problem finally

this is the code

[filename pathname] = uigetfile({'*.tif'},'File Selector'); img = strcat(pathname, filename); axes(handles.axes1); imshow(img) complete = fullfile(pathname,filename); set(handles.path,'string',complete);

X = imread(img); X = rgb2gray(X); % to convert the image to two dimensional in order to use edge method

thank you for helping ^_^