[Harris] finished 4 step

function varargout = cornerdetect(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @cornerdetect_OpeningFcn, ...
                   'gui_OutputFcn',  @cornerdetect_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end
if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end


% --- Executes just before cornerdetect is made visible.
function cornerdetect_OpeningFcn(hObject, eventdata, handles, varargin)
%set initial parameters
handles.output = hObject;
set(handles.button_detectcorner1,'Enable','Off');

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes cornerdetect wait for user response (see UIRESUME)
% uiwait(handles.figure1);

function varargout = cornerdetect_OutputFcn(hObject, eventdata, handles)
varargout{1} = handles.output;

% ---------------------------------------------------------------------------------------------------------------
function button_loadimage1_Callback(hObject, eventdata, handles)
[FileName,PathName] = uigetfile({'*.jpg;*.tif;*.png;*.gif;*.bmp','All Image Files';...
          '*.*','All Files' });
[handles.i1,handles.map1,handles.g1,handles.d1]=loadimage(PathName,FileName);
imageshow(handles.i1,handles.map1,handles.axes1);
set(handles.button_detectcorner1,'Enable','On');
guidata(gcf,handles);

% --- Executes during object creation, after setting all properties.
function popupmenu_selectdetector1_CreateFcn(hObject, eventdata, handles)
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end


% --- Executes on button press in button_detectcorner1.
function button_detectcorner1_Callback(hObject, eventdata, handles)
%[cim,r,c]=corner(handles.g1);
prompt = {'Enter sigma:','Enter thresh:','Enter radius:'};
dlg_title = 'Input parameters for harris corner detector';
num_lines= 1;
def     = {'1','300','20'};
answer  = inputdlg(prompt,dlg_title,num_lines,def);
sigma=str2double(answer{1});
thresh=str2double(answer{2});
radius=str2double(answer{3});
%save input
handles.sigma = sigma;
handles.thresh = thresh;
handles.radius = radius;
[cim,r,c]=harris(handles.g1,sigma,thresh,radius);

set(handles.axes1,'NextPlot','add');
plot(c,r,'*','Parent',handles.axes1);
str=strcat('Number of corners :  ',num2str(size(r,1)));
set(handles.text_cornernumber1,'String',str);
guidata(hObject,handles);

% --------------------------------------------------------------------

function [I,map,G,D]=loadimage(pathname,filename)
[I,map]=imread([pathname filename]);
iii =  size(size(I));
if iii(2) == 3
    G = rgb2gray(I);
else
    G = I;
end
D=double(G);

function imageshow(I,map,axes_handle)
axis equal;
colormap(map);
image(I,'Parent',axes_handle);%,'XData',-n1/2,'YData',-m1/2);


function [cim,r,c]=corner(G)
        prompt = {'Enter sigma:','Enter thresh:','Enter radius:'};
        dlg_title = 'Input parameters for harris corner detector';
        num_lines= 1;
        def     = {'1','300','20'};
        answer  = inputdlg(prompt,dlg_title,num_lines,def);
        sigma=str2double(answer{1});
        thresh=str2double(answer{2});
        radius=str2double(answer{3});
        [cim,r,c]=harris(G,sigma,thresh,radius);


% --- Executes on button press in button_Iy.
function button_Ix_Callback(hObject, eventdata, handles)
% hObject    handle to button_Iy (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%data = get(
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Ix = conv2(im, dx, 'same');
set(handles.uitable1, 'data', Ix);

% --- Executes on button press in button_Iy.
function button_Iy_Callback(hObject, eventdata, handles)
% hObject    handle to button_Iy (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%data = get(
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Iy = conv2(im, dy, 'same');
set(handles.uitable1, 'data', Iy);

% --- Executes on button press in button_Ix2.
function button_Ix2_Callback(hObject, eventdata, handles)
% hObject    handle to button_Ix2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Ix = conv2(im, dx, 'same');
Iy = conv2(im, dy, 'same');
Ix2 = Ix.^2;
set(handles.uitable1, 'data', Ix2);

% --- Executes on button press in button_Iy2.
function button_Iy2_Callback(hObject, eventdata, handles)
% hObject    handle to button_Iy2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Ix = conv2(im, dx, 'same');
Iy = conv2(im, dy, 'same');
Iy2 = Iy.^2;
set(handles.uitable1, 'data', Iy2);

% --- Executes on button press in button_Ixy.
function button_Ixy_Callback(hObject, eventdata, handles)
% hObject    handle to button_Ixy (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Ix = conv2(im, dx, 'same');
Iy = conv2(im, dy, 'same');
Ixy = Ix.*Iy;
set(handles.uitable1, 'data', Ixy);

% --- Executes on button press in button_Sx2.
function button_Sx2_Callback(hObject, eventdata, handles)
% hObject    handle to button_Sx2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Ix = conv2(im, dx, 'same');
Iy = conv2(im, dy, 'same');
sigma = handles.sigma;
g = fspecial('gaussian',max(1,fix(6*sigma)), sigma);
Sx2 = conv2(Ix.^2, g, 'same');
set(handles.uitable1, 'data', Sx2);

% --- Executes on button press in button_Sy2.
function button_Sy2_Callback(hObject, eventdata, handles)
% hObject    handle to button_Sy2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Ix = conv2(im, dx, 'same');
Iy = conv2(im, dy, 'same');
sigma = handles.sigma;
g = fspecial('gaussian',max(1,fix(6*sigma)), sigma);
Sy2 = conv2(Iy.^2, g, 'same');
set(handles.uitable1, 'data', Sy2);

% --- Executes on button press in button_Sxy.
function button_Sxy_Callback(hObject, eventdata, handles)
% hObject    handle to button_Sxy (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
dx = [-1 0 1; -1 0 1; -1 0 1];
dy = dx';
im = handles.d1;
Ix = conv2(im, dx, 'same');
Iy = conv2(im, dy, 'same');
sigma = handles.sigma;
g = fspecial('gaussian',max(1,fix(6*sigma)), sigma);
Sxy = conv2(Ix.*Iy, g, 'same');
set(handles.uitable1, 'data', Sxy);