mirror of
https://github.com/opencv/opencv.git
synced 2024-12-29 04:28:17 +08:00
3013ad6624
Request to comments on pull request for simplex method. In particular
*) while(1) is replaced with for(;;)
*) if(true){...} constructions in tests are replaced with #if 1 ...
#endif
102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
#include "test_precomp.hpp"
|
|
#include <iostream>
|
|
|
|
TEST(Optim_LpSolver, regression_basic){
|
|
cv::Mat A,B,z,etalon_z;
|
|
|
|
#if 1
|
|
//cormen's example #1
|
|
A=(cv::Mat_<double>(3,1)<<3,1,2);
|
|
B=(cv::Mat_<double>(3,4)<<1,1,3,30,2,2,5,24,4,1,2,36);
|
|
std::cout<<"here A goes\n"<<A<<"\n";
|
|
cv::optim::solveLP(A,B,z);
|
|
std::cout<<"here z goes\n"<<z<<"\n";
|
|
etalon_z=(cv::Mat_<double>(3,1)<<8,4,0);
|
|
ASSERT_EQ(cv::countNonZero(z!=etalon_z),0);
|
|
#endif
|
|
|
|
#if 1
|
|
//cormen's example #2
|
|
A=(cv::Mat_<double>(1,2)<<18,12.5);
|
|
B=(cv::Mat_<double>(3,3)<<1,1,20,1,0,20,0,1,16);
|
|
std::cout<<"here A goes\n"<<A<<"\n";
|
|
cv::optim::solveLP(A,B,z);
|
|
std::cout<<"here z goes\n"<<z<<"\n";
|
|
etalon_z=(cv::Mat_<double>(2,1)<<20,0);
|
|
ASSERT_EQ(cv::countNonZero(z!=etalon_z),0);
|
|
#endif
|
|
|
|
#if 1
|
|
//cormen's example #3
|
|
A=(cv::Mat_<double>(1,2)<<5,-3);
|
|
B=(cv::Mat_<double>(2,3)<<1,-1,1,2,1,2);
|
|
std::cout<<"here A goes\n"<<A<<"\n";
|
|
cv::optim::solveLP(A,B,z);
|
|
std::cout<<"here z goes\n"<<z<<"\n";
|
|
etalon_z=(cv::Mat_<double>(2,1)<<1,0);
|
|
ASSERT_EQ(cv::countNonZero(z!=etalon_z),0);
|
|
#endif
|
|
}
|
|
|
|
TEST(Optim_LpSolver, regression_init_unfeasible){
|
|
cv::Mat A,B,z,etalon_z;
|
|
|
|
#if 1
|
|
//cormen's example #4 - unfeasible
|
|
A=(cv::Mat_<double>(1,3)<<-1,-1,-1);
|
|
B=(cv::Mat_<double>(2,4)<<-2,-7.5,-3,-10000,-20,-5,-10,-30000);
|
|
std::cout<<"here A goes\n"<<A<<"\n";
|
|
cv::optim::solveLP(A,B,z);
|
|
std::cout<<"here z goes\n"<<z<<"\n";
|
|
etalon_z=(cv::Mat_<double>(3,1)<<1250,1000,0);
|
|
ASSERT_EQ(cv::countNonZero(z!=etalon_z),0);
|
|
#endif
|
|
}
|
|
|
|
TEST(Optim_LpSolver, regression_absolutely_unfeasible){
|
|
cv::Mat A,B,z,etalon_z;
|
|
|
|
#if 1
|
|
//trivial absolutely unfeasible example
|
|
A=(cv::Mat_<double>(1,1)<<1);
|
|
B=(cv::Mat_<double>(2,2)<<1,-1);
|
|
std::cout<<"here A goes\n"<<A<<"\n";
|
|
int res=cv::optim::solveLP(A,B,z);
|
|
ASSERT_EQ(res,-1);
|
|
#endif
|
|
}
|
|
|
|
TEST(Optim_LpSolver, regression_multiple_solutions){
|
|
cv::Mat A,B,z,etalon_z;
|
|
|
|
#if 1
|
|
//trivial example with multiple solutions
|
|
A=(cv::Mat_<double>(2,1)<<1,1);
|
|
B=(cv::Mat_<double>(1,3)<<1,1,1);
|
|
std::cout<<"here A goes\n"<<A<<"\n";
|
|
int res=cv::optim::solveLP(A,B,z);
|
|
printf("res=%d\n",res);
|
|
printf("scalar %g\n",z.dot(A));
|
|
std::cout<<"here z goes\n"<<z<<"\n";
|
|
ASSERT_EQ(res,1);
|
|
ASSERT_EQ(z.dot(A),1);
|
|
#endif
|
|
}
|
|
|
|
TEST(Optim_LpSolver, regression_cycling){
|
|
cv::Mat A,B,z,etalon_z;
|
|
|
|
#if 1
|
|
//example with cycling from http://people.orie.cornell.edu/miketodd/or630/SimplexCyclingExample.pdf
|
|
A=(cv::Mat_<double>(4,1)<<10,-57,-9,-24);
|
|
B=(cv::Mat_<double>(3,5)<<0.5,-5.5,-2.5,9,0,0.5,-1.5,-0.5,1,0,1,0,0,0,1);
|
|
std::cout<<"here A goes\n"<<A<<"\n";
|
|
int res=cv::optim::solveLP(A,B,z);
|
|
printf("res=%d\n",res);
|
|
printf("scalar %g\n",z.dot(A));
|
|
std::cout<<"here z goes\n"<<z<<"\n";
|
|
ASSERT_EQ(z.dot(A),1);
|
|
//ASSERT_EQ(res,1);
|
|
#endif
|
|
}
|