b71cc8bb
 Tianshu Cheng
mPb using 3 channels
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#include <stim/image/image.h>
#include <cmath>
#include <conio.h>
#include <stim/visualization/colormap.h>
#include <stim/image/image_contour_detection.h>
#include <sstream>
stim::image<float> func_mPb(stim::image<float> lab, unsigned int theta_n, unsigned int w, unsigned int h){
std::clock_t start;
start = std::clock();
//---------------pavel's suggesiton------------------------------------
std::ostringstream ss;
unsigned int N = w * h;
stim::image<float> mPb_theta(w,h), mPb(w,h);
unsigned size = mPb_theta.size();
memset ( mPb.data(), 0, size * sizeof(float));
float* ptr;
ptr = (float*) malloc(size * sizeof(float) * theta_n);
for (unsigned int n = 0; n < theta_n; n++){
ss << "data_output/mPb_theta"<< n << ".bmp";
float theta = 180 * ((float)n/theta_n);
mPb_theta = func_mPb_theta(lab, theta, w, h);
//mPb_theta.load("101087.bmp");
float* ptr_n = &ptr[ n * w * h * 1 ];
mPb_theta.channel(0).data_noninterleaved(ptr_n);
double duration1 = ( std::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"mPb_theta_"<< theta <<" complished time:"<< duration1 <<"s"<<'\n';
unsigned long idx = n * w * h * 1; //index for the nth slice
std::string sss = ss.str();
stim::cpu2image(&ptr[idx], sss, w, h, stim::cmBrewer);
for(unsigned long i = 0; i < N; i++){
float pixel = ptr[i+idx]; //get the ith pixel in nth slice
if(pixel > mPb.data()[i]){
mPb.data()[i] = pixel;
}
else{
}
}
ss.str("");
}
stim::cpu2image(mPb.data(), "data_output/mPb.bmp", w, h, stim::cmBrewer);
double duration2 = ( std::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"total time:"<< duration2 <<"s"<<'\n';
getch();
return mPb;
//---------------my first method------------------------------------
/*
std::clock_t start;
start = std::clock();
stim::image<float> mPb_stack(w,h,theta_n), mPb(w,h), mPb_theta(w,h), A, B, temp;
float* ptr[8];
for (unsigned int n = 0; n < theta_n; n++){
//int* x = new int(5);
//int* y = x;
//*y = 1;
float theta = 180 * ((float)n/theta_n);
mPb_theta = func_mPb_theta(lab, theta, w, h);
mPb_stack.getslice(n) = mPb_theta;
float* ptr[n] = mPb_stack.getslice(n).data();
double duration1 = ( std::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"mPb_theta, theta = "<< theta <<" time:"<< duration1 <<"s"<<'\n';
for(unsigned long i = 0; i < N; i++){
*(ptr[n]+i) = mPb_theta.data()[i];
//float a = mPb_theta.data()[i];
//float* B = ptr[n]+i;
//A.data()[i] = mPb_theta.data()[i];
//float* C = ptr[0]+1;
//*C = 1;
//
}
stim::cpu2image(ptr[0], "data_output/mPb_theta.bmp", w, h, stim::cmBrewer);
}
for (unsigned long i = 0; i < N; i++){
mPb.data()[i] = 0;
for (unsigned int n = 0; n < theta_n; n++){
float* ptr2 = ptr[i]+n;
float temp = *ptr2;
if(temp > mPb.data()[i]){
mPb.data()[i] = temp;
}
else{
}
}
}
stim::cpu2image(mPb.data(), "data_output/cmap_mPb.bmp", w, h, stim::cmBrewer);
double duration2 = ( std::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"total time:"<< duration2 <<"s"<<'\n';
getch();
return mPb; */
}
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