-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathDPCM5bit.m
More file actions
195 lines (187 loc) · 11.2 KB
/
DPCM5bit.m
File metadata and controls
195 lines (187 loc) · 11.2 KB
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
p2 = readData('output.avi'); %load the video and converts to double
p2 = double(p2);
[m,n] = size(p2(:,:,1));
% % I want to have all the pixel values in one row
for count = 1:300
X(:,:,count) = reshape(p2(:,:,count),[1,(m*n)]);
end
%The for loop is to store the next values of X in Y
count = 1;
for count1 = 1:300
for count = 1:((m*n)-1)
Y(1,count,count1) = X(1,count+1,count1);
end
end
for count1 = 1:300
Y(1,101376,count1) = X(1,1,count1); %I did this so i dont lose the information in X(1)
end
%calculating the error signal for each frame
XY = X.*Y; %Multiplying the X and Y arrays together
for count = 1:300
Ex(1,1,count) = mean(X(:,:,count));
Ey(1,1,count) = mean(Y(:,:,count));
Exy(1,1,count) = mean(XY(:,:,count));
sigx(1,1,count) = std(X(:,:,count)); %calculating the standard deviations
sigy(1,1,count) = std(Y(:,:,count));
end
for count1 = 1:300
rho(1,1,count1) = (Exy(1,1,count1) - (Ex(1,1,count1) * Ey(1,1,count1)))/(sigx(1,1,count1) * sigy(1,1,count1));
end
for count = 1:300
Xhat(1,:,count) = ((rho(1,1,count)*(Y(1,:,count)-Ey(1,1,count))*sigx(1,1,count))/sigy(1,1,count)) + Ex(1,1,count);
end
% for count = 1:300
% Xhat(1,:,count) = ((rho(1,1,count)*sigx(1,1,count)/sigy(1,1,count))*Y(1,:,count)) + Ex(1,1,count) - ((rho(1,1,count)*sigx(1,1,count))/sigy(1,1,count));
% end
ers2 = X - Xhat; %error signal
%%%%%%%Quantization%%%
count3 = 1;
for count1 = 1:300
for count2 = 1:101376
if ers2(count3,count2,count1)>= 0 && ers2(count3,count2,count1)<= 7
ers2(count3,count2,count1) = 4;
elseif ers2(count3,count2,count1)>= 8 && ers2(count3,count2,count1)<= 15
ers2(count3,count2,count1) = 12;
elseif ers2(count3,count2,count1)>= 16 && ers2(count3,count2,count1)<= 23
ers2(count3,count2,count1) = 20;
elseif ers2(count3,count2,count1)>= 24 && ers2(count3,count2,count1)<= 31
ers2(count3,count2,count1) = 28;
elseif ers2(count3,count2,count1)>= 32 && ers2(count3,count2,count1)<= 39
ers2(count3,count2,count1) = 36;
elseif ers2(count3,count2,count1)>= 40 && ers2(count3,count2,count1)<= 47
ers2(count3,count2,count1) = 44;
elseif ers2(count3,count2,count1)>= 48 && ers2(count3,count2,count1)<= 55
ers2(count3,count2,count1) = 52;
elseif ers2(count3,count2,count1)>= 56 && ers2(count3,count2,count1)<= 63
ers2(count3,count2,count1) = 60;
elseif ers2(count3,count2,count1)>= 64 && ers2(count3,count2,count1)<= 71
ers2(count3,count2,count1) = 68;
elseif ers2(count3,count2,count1)>= 72 && ers2(count3,count2,count1)<= 79
ers2(count3,count2,count1) = 76;
elseif ers2(count3,count2,count1)>= 80 && ers2(count3,count2,count1)<= 87
ers2(count3,count2,count1) = 84;
elseif ers2(count3,count2,count1)>= 88 && ers2(count3,count2,count1)<= 95
ers2(count3,count2,count1) = 92;
elseif ers2(count3,count2,count1)>= 96 && ers2(count3,count2,count1)<= 103
ers2(count3,count2,count1) = 100;
elseif ers2(count3,count2,count1)>= 104 && ers2(count3,count2,count1)<= 111
ers2(count3,count2,count1) = 108;
elseif ers2(count3,count2,count1)>= 112 && ers2(count3,count2,count1)<= 119
ers2(count3,count2,count1) = 116;
elseif ers2(count3,count2,count1)>= 120 && ers2(count3,count2,count1)<= 127
ers2(count3,count2,count1) = 124;
elseif ers2(count3,count2,count1)>= 128 && ers2(count3,count2,count1)<= 135
ers2(count3,count2,count1) = 132;
elseif ers2(count3,count2,count1)>= 136 && ers2(count3,count2,count1)<= 143
ers2(count3,count2,count1) = 140;
elseif ers2(count3,count2,count1)>= 144 && ers2(count3,count2,count1)<= 151
ers2(count3,count2,count1) = 148;
elseif ers2(count3,count2,count1)>= 152 && ers2(count3,count2,count1)<= 159
ers2(count3,count2,count1) = 156;
elseif ers2(count3,count2,count1)>= 160 && ers2(count3,count2,count1)<= 167
ers2(count3,count2,count1) = 164;
elseif ers2(count3,count2,count1)>= 168 && ers2(count3,count2,count1)<= 175
ers2(count3,count2,count1) = 172;
elseif ers2(count3,count2,count1)>= 176 && ers2(count3,count2,count1)<= 183
ers2(count3,count2,count1) = 180;
elseif ers2(count3,count2,count1)>= 184 && ers2(count3,count2,count1)<= 191
ers2(count3,count2,count1) = 188;
elseif ers2(count3,count2,count1)>= 192 && ers2(count3,count2,count1)<= 199
ers2(count3,count2,count1) = 196;
elseif ers2(count3,count2,count1)>= 200 && ers2(count3,count2,count1)<= 207
ers2(count3,count2,count1) = 204;
elseif ers2(count3,count2,count1)>= 208 && ers2(count3,count2,count1)<= 215
ers2(count3,count2,count1) = 212;
elseif ers2(count3,count2,count1)>= 216 && ers2(count3,count2,count1)<= 223
ers2(count3,count2,count1) = 220;
elseif ers2(count3,count2,count1)>= 224 && ers2(count3,count2,count1)<= 231
ers2(count3,count2,count1) = 228;
elseif ers2(count3,count2,count1)>= 232 && ers2(count3,count2,count1)<= 239
ers2(count3,count2,count1) = 236;
elseif ers2(count3,count2,count1)>= 240 && ers2(count3,count2,count1)<= 247
ers2(count3,count2,count1) = 244;
elseif ers2(count3,count2,count1)>= 248 && ers2(count3,count2,count1)<= 255
ers2(count3,count2,count1) = 252;
elseif ers2(count3,count2,count1)>= 0 && ers2(count3,count2,count1)<= -7
ers2(count3,count2,count1) = -4;
elseif ers2(count3,count2,count1)>= -8 && ers2(count3,count2,count1)<= -15
ers2(count3,count2,count1) = -12;
elseif ers2(count3,count2,count1)>= -16 && ers2(count3,count2,count1)<= -23
ers2(count3,count2,count1) = -20;
elseif ers2(count3,count2,count1)>= -24 && ers2(count3,count2,count1)<= -31
ers2(count3,count2,count1) = -28;
elseif ers2(count3,count2,count1)>= -32 && ers2(count3,count2,count1)<= -39
ers2(count3,count2,count1) = -36;
elseif ers2(count3,count2,count1)>= -40 && ers2(count3,count2,count1)<= -47
ers2(count3,count2,count1) = -44;
elseif ers2(count3,count2,count1)>= -48 && ers2(count3,count2,count1)<= -55
ers2(count3,count2,count1) = -52;
elseif ers2(count3,count2,count1)>= -56 && ers2(count3,count2,count1)<= -63
ers2(count3,count2,count1) = -60;
elseif ers2(count3,count2,count1)>= -64 && ers2(count3,count2,count1)<= -71
ers2(count3,count2,count1) = -68;
elseif ers2(count3,count2,count1)>= -72 && ers2(count3,count2,count1)<= -79
ers2(count3,count2,count1) = -76;
elseif ers2(count3,count2,count1)>= -80 && ers2(count3,count2,count1)<= -87
ers2(count3,count2,count1) = -84;
elseif ers2(count3,count2,count1)>= -88 && ers2(count3,count2,count1)<= -95
ers2(count3,count2,count1) = -92;
elseif ers2(count3,count2,count1)>= -96 && ers2(count3,count2,count1)<= -103
ers2(count3,count2,count1) = -100;
elseif ers2(count3,count2,count1)>= -104 && ers2(count3,count2,count1)<= -111
ers2(count3,count2,count1) = -108;
elseif ers2(count3,count2,count1)>= -112 && ers2(count3,count2,count1)<= -119
ers2(count3,count2,count1) = -116;
elseif ers2(count3,count2,count1)>= -120 && ers2(count3,count2,count1)<= -127
ers2(count3,count2,count1) = -124;
elseif ers2(count3,count2,count1)>= -128 && ers2(count3,count2,count1)<= -135
ers2(count3,count2,count1) = -132;
elseif ers2(count3,count2,count1)>= -136 && ers2(count3,count2,count1)<= -143
ers2(count3,count2,count1) = -140;
elseif ers2(count3,count2,count1)>= -144 && ers2(count3,count2,count1)<= -151
ers2(count3,count2,count1) = -148;
elseif ers2(count3,count2,count1)>= -152 && ers2(count3,count2,count1)<= -159
ers2(count3,count2,count1) = -156;
elseif ers2(count3,count2,count1)>= -160 && ers2(count3,count2,count1)<= -167
ers2(count3,count2,count1) = -164;
elseif ers2(count3,count2,count1)>= -168 && ers2(count3,count2,count1)<= -175
ers2(count3,count2,count1) = -172;
elseif ers2(count3,count2,count1)>= -176 && ers2(count3,count2,count1)<= -183
ers2(count3,count2,count1) = -180;
elseif ers2(count3,count2,count1)>= -184 && ers2(count3,count2,count1)<= -191
ers2(count3,count2,count1) = -188;
elseif ers2(count3,count2,count1)>= -192 && ers2(count3,count2,count1)<= -199
ers2(count3,count2,count1) = -196;
elseif ers2(count3,count2,count1)>= -200 && ers2(count3,count2,count1)<= -207
ers2(count3,count2,count1) = -204;
elseif ers2(count3,count2,count1)>= -208 && ers2(count3,count2,count1)<= -215
ers2(count3,count2,count1) = -212;
elseif ers2(count3,count2,count1)>= -216 && ers2(count3,count2,count1)<= -223
ers2(count3,count2,count1) = -220;
elseif ers2(count3,count2,count1)>= -224 && ers2(count3,count2,count1)<= -231
ers2(count3,count2,count1) = -228;
elseif ers2(count3,count2,count1)>= -232 && ers2(count3,count2,count1)<= -239
ers2(count3,count2,count1) = -236;
elseif ers2(count3,count2,count1)>= -240 && ers2(count3,count2,count1)<= -247
ers2(count3,count2,count1) = -244;
elseif ers2(count3,count2,count1)>= -248 && ers2(count3,count2,count1)<= -255
ers2(count3,count2,count1) = -252;
end
end
end
%reciever side
Xq = ers2 + Xhat;
%%%%%%%%%%%%%%%%%%%%%%SNR%%%%%%%%%%%%%%
Xq = double(Xq);
for count = 1:300
magI(1,count) = norm(X(:,:,count));
magerr(1,count) = norm(X(:,:,count)- Xq(:,:,count));
end
SNR5 = 20*log10 (norm(magI)/norm(magerr));
for count = 1:300
X2play5(:,:,count) = reshape(Xq(:,:,count),[m,n]);
end
X2play5 = uint8(X2play5);
%implay(X2play5)
%%Plotting error signal histogram
histogram(ers2)