-
Notifications
You must be signed in to change notification settings - Fork 1
/
lab3gui.m
227 lines (181 loc) · 8.69 KB
/
lab3gui.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
function varargout = lab3gui(varargin)
% LAB3GUI MATLAB code for lab3gui.fig
% LAB3GUI, by itself, creates a new LAB3GUI or raises the existing
% singleton*.
%
% H = LAB3GUI returns the handle to a new LAB3GUI or the handle to
% the existing singleton*.
%
% LAB3GUI('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in LAB3GUI.M with the given input arguments.
%
% LAB3GUI('Property','Value',...) creates a new LAB3GUI or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before lab3gui_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to lab3gui_OpeningFcn via varargin.
%
% *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one
% instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES
% Edit the above text to modify the response to help lab3gui
% Last Modified by GUIDE v2.5 29-Nov-2011 15:35:31
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @lab3gui_OpeningFcn, ...
'gui_OutputFcn', @lab3gui_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
% End initialization code - DO NOT EDIT
% --- Executes just before lab3gui is made visible.
function lab3gui_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% varargin command line arguments to lab3gui (see VARARGIN)
% Choose default command line output for lab3gui
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes lab3gui wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = lab3gui_OutputFcn(hObject, eventdata, handles)
% varargout cell array for returning output args (see VARARGOUT);
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Get default command line output from handles structure
varargout{1} = handles.output;
% --- Executes on button press in q1.
function q1_Callback(hObject, eventdata, handles)
% hObject handle to q1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
deltax = [-1 0 1; -2 0 2; -1 0 1]; % Sobel operator
deltay = deltax';
lx = [0 0 0; -1/2 0 1/2; 0 0 0];
tools = few256;
dxtools = conv2(tools, deltax, 'valid');
dytools = conv2(tools, deltay, 'valid');
cdiff = conv2(tools, lx, 'valid');
figure(1);
subplot(1,1,1); % Clear
subplot(2,2,1); showgray(tools); title('tools');
subplot(2,2,2); showgray(cdiff/max(abs(cdiff(:))) - dxtools/max(abs(dxtools(:))));
title('difference between central difference and sobel (x-direction)');
subplot(2,2,3); showgray(dxtools); title('dxtools');
subplot(2,2,4); showgray(dytools); title('dytools');
set(handles.text1, 'String', sprintf('size(tools) = [%d, %d]\nsize(dxtools) = [%d, %d]\nsize(dytools) = [%d, %d]\n', ...
size(tools), size(dxtools), size(dytools)));
% --- Executes on button press in q2.
function q2_Callback(hObject, eventdata, handles)
% hObject handle to q2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
deltax = [-1 0 1; -2 0 2; -1 0 1]; % Sobel operator
deltay = deltax';
tools = few256;
dxtools = conv2(tools, deltax, 'valid');
dytools = conv2(tools, deltay, 'valid');
gradmagtools = sqrt(dxtools .^ 2 + dytools .^ 2);
smooth1 = str2double(get(handles.smooth1, 'String'));
sm_tools = discgaussfft(tools, smooth1);
sm_dxtools = conv2(sm_tools, deltax, 'valid');
sm_dytools = conv2(sm_tools, deltay, 'valid');
sm_gradmagtools = sqrt(sm_dxtools .^ 2 + sm_dytools .^ 2);
threshold1 = str2double(get(handles.threshold1, 'String'));
threshold2 = str2double(get(handles.threshold2, 'String'));
figure(1);
subplot(1,1,1);
subplot(2,4,1); showgray(tools); title('tools');
subplot(2,4,2); showgray(gradmagtools); title('gradient magnitude tools');
subplot(2,4,3); hist(gradmagtools(:), 256); title('histogram');
subplot(2,4,4); showgray(gradmagtools-threshold1 > 0); title(sprintf('threshold = %d', threshold1));
subplot(2,4,5); showgray(sm_tools); title('smoothed tools');
subplot(2,4,6); showgray(sm_gradmagtools); title('gradient magnitude of smoothed tools');
subplot(2,4,7); hist(sm_gradmagtools(:), 256); title('histogram');
subplot(2,4,8); showgray(sm_gradmagtools-threshold2 > 0); title(sprintf('threshold = %d', threshold2));
function threshold1_Callback(hObject, eventdata, handles)
% hObject handle to threshold1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of threshold1 as text
% str2double(get(hObject,'String')) returns contents of threshold1 as a double
% --- Executes during object creation, after setting all properties.
function threshold1_CreateFcn(hObject, eventdata, handles)
% hObject handle to threshold1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
function threshold2_Callback(hObject, eventdata, handles)
% hObject handle to threshold2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of threshold2 as text
% str2double(get(hObject,'String')) returns contents of threshold2 as a double
% --- Executes during object creation, after setting all properties.
function threshold2_CreateFcn(hObject, eventdata, handles)
% hObject handle to threshold2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
function smooth1_Callback(hObject, eventdata, handles)
% hObject handle to smooth1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of smooth1 as text
% str2double(get(hObject,'String')) returns contents of smooth1 as a double
% --- Executes during object creation, after setting all properties.
function smooth1_CreateFcn(hObject, eventdata, handles)
% hObject handle to smooth1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
% --- Executes on button press in s4.
function s4_Callback(hObject, eventdata, handles)
% hObject handle to s4 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% [x y] = meshgrid(-5:5, -5:5);
% filter2(dxxxmask, x .^ 3, 'valid')
house = godthem256;
figure(1);
subplot(1,1,1);
scale = [0.0001 1.0 4.0 16 64];
for i = 1:5
subplot(3,5,i);
showgray(discgaussfft(house, scale(i))); title(sprintf('scale = %d', scale(i)));
subplot(3,5,i+5);
contour(Lvvtilde(discgaussfft(house, scale(i)), 'same'), [0 0]);
axis('image');
axis('ij');
subplot(3,5,i+10);
showgray(Lvvvtilde(discgaussfft(house, scale(i)), 'same') < 0);
axis('image');
axis('ij');
end