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Side by Side Diff: webrtc/modules/video_processing/test/createTable.m

Issue 1410663004: modules/video_processing: refactor interface->include + more. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Rebased Created 5 years, 1 month ago
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1 % Create the color enhancement look-up table and write it to 1 % Create the color enhancement look-up table and write it to
2 % file colorEnhancementTable.cpp. Copy contents of that file into 2 % file colorEnhancementTable.cpp. Copy contents of that file into
3 % the source file for the color enhancement function. 3 % the source file for the color enhancement function.
4 4
5 clear 5 clear
6 close all 6 close all
7 7
8 8
9 % First, define the color enhancement in a normalized domain 9 % First, define the color enhancement in a normalized domain
10 10
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24 B=0.2; % initial slope of compander function (between 0 and 1) 24 B=0.2; % initial slope of compander function (between 0 and 1)
25 25
26 x0=linspace(0,r0).'; % zone 1 26 x0=linspace(0,r0).'; % zone 1
27 x1=linspace(r0,r1).'; % zone 2 27 x1=linspace(r0,r1).'; % zone 2
28 x2=linspace(r1,1).'; % zone 3 28 x2=linspace(r1,1).'; % zone 3
29 29
30 A=(1-B)/r0; 30 A=(1-B)/r0;
31 f0=A*x0.^2+B*x0; % compander function in zone 1 31 f0=A*x0.^2+B*x0; % compander function in zone 1
32 32
33 % equation system for finding second zone parameters 33 % equation system for finding second zone parameters
34 M=[r0^3 r0^2 r0 1; 34 M=[r0^3 r0^2 r0 1;
35 3*r0^2 2*r0 1 0; 35 3*r0^2 2*r0 1 0;
36 3*r1^2 2*r1 1 0; 36 3*r1^2 2*r1 1 0;
37 r1^3 r1^2 r1 1]; 37 r1^3 r1^2 r1 1];
38 m=[A*r0^2+B*r0; 2*A*r0+B; 1; r1]; 38 m=[A*r0^2+B*r0; 2*A*r0+B; 1; r1];
39 % solve equations 39 % solve equations
40 theta=M\m; 40 theta=M\m;
41 41
42 % compander function in zone 1 42 % compander function in zone 1
43 f1=[x1.^3 x1.^2 x1 ones(size(x1))]*theta; 43 f1=[x1.^3 x1.^2 x1 ones(size(x1))]*theta;
44 44
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166 % traverse all frames 166 % traverse all frames
167 for k=1:size(y,3) 167 for k=1:size(y,3)
168 fprintf('Frame %i\n', k); 168 fprintf('Frame %i\n', k);
169 for r=1:size(u,1) 169 for r=1:size(u,1)
170 for c=1:size(u,2) 170 for c=1:size(u,2)
171 unew(r,c,k) = uint8(U(double(v(r,c,k))+1, double(u(r,c,k))+1)); 171 unew(r,c,k) = uint8(U(double(v(r,c,k))+1, double(u(r,c,k))+1));
172 vnew(r,c,k) = uint8(V(double(v(r,c,k))+1, double(u(r,c,k))+1)); 172 vnew(r,c,k) = uint8(V(double(v(r,c,k))+1, double(u(r,c,k))+1));
173 end 173 end
174 end 174 end
175 end 175 end
176 176
177 fprintf('\nWriting modified test file...') 177 fprintf('\nWriting modified test file...')
178 writeYUV420file('../out/Debug/foremanColorEnhanced.yuv',y,unew,vnew); 178 writeYUV420file('../out/Debug/foremanColorEnhanced.yuv',y,unew,vnew);
179 fprintf(' done\n'); 179 fprintf(' done\n');
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