the second call back function does not work in gui .could any one help me?

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% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
[filename, pathname] = uigetfile({'*.bmp';'*.jpg';'*.gif';'*.*'}, 'Pick an Image File');
S = imread([pathname,filename]);
axes(handles.axes1);
imshow(S);
handles.f=[pathname,filename];
guidata(hObject, handles);
figure1.text = 'image uploaded'
% --- Executes on button press in pushbutton2.
function process_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
if isfield(handles, 'f')
imread = handles.f;
% convert to binary
binary_image=im2bw(imread('handles.f'));
%Small region is taken to show output clear
binary_image = binary_image(120:400,20:250);
figure;imshow(binary_image);title('Input image');

采纳的回答

Jan
Jan 2017-6-26
编辑:Jan 2017-6-26
  • Please do not only state "does not work", but explain what you see. do you get an error message or do the results differ from your expectations?
function process_Callback(hObject, eventdata, handles)
if isfield(handles, 'myImage')
myImage = handles.f;
binary_image=im2bw(imread('handles.f'));
Now the image with the name 'handles.f' is loaded, but you want:
binary_image=im2bw(imread(handles.f));
without quotes. The error message should reveal this directly. Note that Walter has mentioned this already, so please update your code.
  • The purpose of the figure1.text = 'image uploaded' lines is not clear to me.
  • Simplification:
% Replace this:
e=1;
for k=x-n:x+n
f=1;
for l=y-n:y+n
mat(e,f)=temp(k,l);
f=f+1;
end
e=e+1;
end;
% By this:
mat(1:2*n + 1,1:2*n+1) = temp(x-n:x+n, y-n:y+n);
% Or even better:
mat = temp(x-n:x+n, y-n:y+n);
  6 个评论
indrani dalui
indrani dalui 2017-7-1
编辑:Walter Roberson 2017-7-1
sir,after two images output i want compare both two images ..is similar or not within one push button... code is bellow.what to do sir?
% --- Executes on button press in Recognation.
function Recognation_Callback(hObject, eventdata, ~)
% hObject handle to Recognation (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
if isequal(f,f2) % f and f2 are compared
msgbox('Both f and f2 are equal', 'MESSAGE');
else
msgbox('f and f2 are not equal', 'MESSAGE');
end

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更多回答(1 个)

Walter Roberson
Walter Roberson 2017-6-26
if isfield(handles, 'f')
% convert to binary
binary_image = im2bw( imread(handles.f) );
%Small region is taken to show output clear
binary_image = binary_image(120:400,20:250);
figure;
imshow(binary_image);
title('Input image');
end
  23 个评论
indrani dalui
indrani dalui 2017-6-29
编辑:Walter Roberson 2017-6-29
sir,after extraction minutiae how to count ridge-end and bifurcation point and location instead of bellow code..
function Process_Callback(hObject, eventdata, handles)
% hObject handle to Process (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
if isfield(handles, 'f')
% convert to binary
binary_image = im2bw( imread(handles.f) );
%Thinning
thin_image=~bwmorph(binary_image,'thin',Inf);
figure;imshow(thin_image);title('Thinned Image');
%Minutiae extraction
s=size(thin_image);
N=3;%window size
n=(N-1)/2;
r=s(1)+2*n;
c=s(2)+2*n;
double temp(r,c);
temp=zeros(r,c);bifurcation=zeros(r,c);ridge=zeros(r,c);
temp((n+1):(end-n),(n+1):(end-n))=thin_image(:,:);
outImg=zeros(r,c,3);%For Display
outImg(:,:,1) = temp .* 255;
outImg(:,:,2) = temp .* 255;
outImg(:,:,3) = temp .* 255;
for x=(n+1+10):(s(1)+n-10)
for y=(n+1+10):(s(2)+n-10)
e=1;
for k=x-n:x+n
f=1;
for l=y-n:y+n
mat(e,f)=temp(k,l);
f=f+1;
end
e=e+1;
end;
if(mat(2,2)==0)
ridge(x,y)=sum(sum(~mat));
bifurcation(x,y)=sum(sum(~mat));
end
end;
end;
% RIDGE END FINDING
[ridge_x ridge_y]=find(ridge==2);
len=length(ridge_x);
%For Display
for i=1:len
outImg((ridge_x(i)-3):(ridge_x(i)+3),(ridge_y(i)-3),2:3)=0;
outImg((ridge_x(i)-3):(ridge_x(i)+3),(ridge_y(i)+3),2:3)=0;
outImg((ridge_x(i)-3),(ridge_y(i)-3):(ridge_y(i)+3),2:3)=0;
outImg((ridge_x(i)+3),(ridge_y(i)-3):(ridge_y(i)+3),2:3)=0;
outImg((ridge_x(i)-3):(ridge_x(i)+3),(ridge_y(i)-3),1)=255;
outImg((ridge_x(i)-3):(ridge_x(i)+3),(ridge_y(i)+3),1)=255;
outImg((ridge_x(i)-3),(ridge_y(i)-3):(ridge_y(i)+3),1)=255;
outImg((ridge_x(i)+3),(ridge_y(i)-3):(ridge_y(i)+3),1)=255;
end
%BIFURCATION FINDING
[bifurcation_x bifurcation_y]=find(bifurcation==4);
len=length(bifurcation_x);
%For Display
for i=1:len
outImg((bifurcation_x(i)-3):(bifurcation_x(i)+3),(bifurcation_y(i)-3),1:2)=0;
outImg((bifurcation_x(i)-3):(bifurcation_x(i)+3),(bifurcation_y(i)+3),1:2)=0;
outImg((bifurcation_x(i)-3),(bifurcation_y(i)-3):(bifurcation_y(i)+3),1:2)=0;
outImg((bifurcation_x(i)+3),(bifurcation_y(i)-3):(bifurcation_y(i)+3),1:2)=0;
outImg((bifurcation_x(i)-3):(bifurcation_x(i)+3),(bifurcation_y(i)-3),3)=255;
outImg((bifurcation_x(i)-3):(bifurcation_x(i)+3),(bifurcation_y(i)+3),3)=255;
outImg((bifurcation_x(i)-3),(bifurcation_y(i)-3):(bifurcation_y(i)+3),3)=255;
outImg((bifurcation_x(i)+3),(bifurcation_y(i)-3):(bifurcation_y(i)+3),3)=255;
end
figure;imshow(outImg);title('Minutiae');
end

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