Visual Servoing Platform  version 3.2.1 under development (2019-05-23)
tutorial-mb-generic-tracker-rgbd.cpp
#include <iostream>
#include <visp3/core/vpDisplay.h>
#include <visp3/core/vpIoTools.h>
#include <visp3/io/vpImageIo.h>
#include <visp3/core/vpXmlParserCamera.h>
#include <visp3/gui/vpDisplayGDI.h>
#include <visp3/gui/vpDisplayX.h>
#include <visp3/mbt/vpMbGenericTracker.h>
#if defined (VISP_HAVE_PCL)
#include <pcl/common/common.h>
#include <pcl/io/pcd_io.h>
struct rs_intrinsics {
float ppx;
float ppy;
float fx;
float fy;
float coeffs[5];
};
void rs_deproject_pixel_to_point(float point[3], const rs_intrinsics &intrin, const float pixel[2], float depth) {
float x = (pixel[0] - intrin.ppx) / intrin.fx;
float y = (pixel[1] - intrin.ppy) / intrin.fy;
float r2 = x * x + y * y;
float f = 1 + intrin.coeffs[0] * r2 + intrin.coeffs[1] * r2 * r2 + intrin.coeffs[4] * r2 * r2 * r2;
float ux = x * f + 2 * intrin.coeffs[2] * x * y + intrin.coeffs[3] * (r2 + 2 * x * x);
float uy = y * f + 2 * intrin.coeffs[3] * x * y + intrin.coeffs[2] * (r2 + 2 * y * y);
x = ux;
y = uy;
point[0] = depth * x;
point[1] = depth * y;
point[2] = depth;
}
bool read_data(unsigned int cpt, const std::string &input_directory, vpImage<vpRGBa> &I_color,
vpImage<uint16_t> &I_depth_raw, pcl::PointCloud<pcl::PointXYZ>::Ptr &pointcloud)
{
char buffer[FILENAME_MAX];
// Read color
std::stringstream ss;
ss << input_directory << "/color_image_%04d.jpg";
sprintf(buffer, ss.str().c_str(), cpt);
std::string filename_color = buffer;
if (!vpIoTools::checkFilename(filename_color)) {
std::cerr << "Cannot read: " << filename_color << std::endl;
return false;
}
vpImageIo::read(I_color, filename_color);
// Read raw depth
ss.str("");
ss << input_directory << "/depth_image_%04d.bin";
sprintf(buffer, ss.str().c_str(), cpt);
std::string filename_depth = buffer;
std::ifstream file_depth(filename_depth.c_str(), std::ios::in | std::ios::binary);
if (!file_depth.is_open()) {
return false;
}
unsigned int height = 0, width = 0;
vpIoTools::readBinaryValueLE(file_depth, height);
vpIoTools::readBinaryValueLE(file_depth, width);
I_depth_raw.resize(height, width);
uint16_t depth_value = 0;
for (unsigned int i = 0; i < height; i++) {
for (unsigned int j = 0; j < width; j++) {
vpIoTools::readBinaryValueLE(file_depth, depth_value);
I_depth_raw[i][j] = depth_value;
}
}
// Transform pointcloud
pointcloud->width = width;
pointcloud->height = height;
pointcloud->reserve((size_t)width * height);
// Only for Creative SR300
const float depth_scale = 0.00100000005f;
rs_intrinsics depth_intrinsic;
depth_intrinsic.ppx = 320.503509521484f;
depth_intrinsic.ppy = 235.602951049805f;
depth_intrinsic.fx = 383.970001220703f;
depth_intrinsic.fy = 383.970001220703f;
depth_intrinsic.coeffs[0] = 0.0f;
depth_intrinsic.coeffs[1] = 0.0f;
depth_intrinsic.coeffs[2] = 0.0f;
depth_intrinsic.coeffs[3] = 0.0f;
depth_intrinsic.coeffs[4] = 0.0f;
for (unsigned int i = 0; i < height; i++) {
for (unsigned int j = 0; j < width; j++) {
float scaled_depth = I_depth_raw[i][j] * depth_scale;
float point[3];
float pixel[2] = {(float)j, (float)i};
rs_deproject_pixel_to_point(point, depth_intrinsic, pixel, scaled_depth);
pointcloud->push_back(pcl::PointXYZ(point[0], point[1], point[2]));
}
}
return true;
}
int main(int argc, char *argv[])
{
std::string input_directory = "data"; // location of the data (images, depth_map, point_cloud)
std::string config_color = "model/cube/cube.xml", config_depth = "model/cube/cube_depth.xml";
std::string model_color = "model/cube/cube.cao", model_depth = "model/cube/cube.cao";
std::string init_file = "model/cube/cube.init";
int frame_cpt = 0;
bool disable_depth = false;
for (int i = 1; i < argc; i++) {
if (std::string(argv[i]) == "--input_directory" && i+1 < argc) {
input_directory = std::string(argv[i+1]);
} else if (std::string(argv[i]) == "--config_color" && i+1 < argc) {
config_color = std::string(argv[i+1]);
} else if (std::string(argv[i]) == "--config_depth" && i+1 < argc) {
config_depth = std::string(argv[i+1]);
} else if (std::string(argv[i]) == "--model_color" && i+1 < argc) {
model_color = std::string(argv[i+1]);
} else if (std::string(argv[i]) == "--model_depth" && i+1 < argc) {
model_depth = std::string(argv[i+1]);
} else if (std::string(argv[i]) == "--init_file" && i+1 < argc) {
init_file = std::string(argv[i+1]);
} else if (std::string(argv[i]) == "--disable_depth") {
disable_depth = true;
} else if (std::string(argv[i]) == "--help" || std::string(argv[i]) == "-h") {
std::cout << "Usage: \n" << argv[0] << " --input_directory <data directory> --config_color <object.xml> --config_depth <object.xml>"
" --model_color <object.cao> --model_depth <object.cao> --init_file <object.init> --disable_depth" << std::endl;
std::cout << "\nExample:\n" << argv[0] << " --config_color model/cube/cube.xml --config_depth model/cube/cube.xml"
" --model_color model/cube/cube.cao --model_depth model/cube/cube.cao --init_file model/cube/cube.init\n" << std::endl;
return 0;
}
}
std::cout << "Config files: " << std::endl;
std::cout << " Input directory: " << "\"" << input_directory << "\"" << std::endl;
std::cout << " Config color: " << "\"" << config_color << "\"" << std::endl;
std::cout << " Config depth: " << "\"" << config_depth << "\"" << std::endl;
std::cout << " Model color : " << "\"" << model_color << "\"" << std::endl;
std::cout << " Model depth : " << "\"" << model_depth << "\"" << std::endl;
std::cout << " Init file : " << "\"" << init_file << "\"" << std::endl;
vpImage<vpRGBa> I_color;
vpImage<unsigned char> I_gray, I_depth;
vpImage<uint16_t> I_depth_raw;
pcl::PointCloud<pcl::PointXYZ>::Ptr pointcloud(new pcl::PointCloud<pcl::PointXYZ>());
vpCameraParameters cam_color, cam_depth;
unsigned int _posx = 100, _posy = 50, _posdx = 10;
read_data(frame_cpt, input_directory, I_color, I_depth_raw, pointcloud);
vpImageConvert::convert(I_color, I_gray);
vpImageConvert::createDepthHistogram(I_depth_raw, I_depth);
#if defined(VISP_HAVE_X11)
vpDisplayX d1, d2;
#elif defined(VISP_HAVE_GDI)
vpDisplayGDI d1, d2;
#endif
d1.init(I_gray, _posx, _posy, "Color stream");
d2.init(I_depth, _posx + I_gray.getWidth()+_posdx, _posy, "Depth stream");
vpDisplay::flush(I_depth);
std::vector<int> trackerTypes;
#ifdef VISP_HAVE_OPENCV
trackerTypes.push_back(vpMbGenericTracker::DEPTH_DENSE_TRACKER);
#else
trackerTypes.push_back(vpMbGenericTracker::EDGE_TRACKER);
#endif
vpMbGenericTracker tracker(trackerTypes);
tracker.loadConfigFile(config_color, config_depth);
tracker.loadModel(model_color, model_depth);
tracker.getCameraParameters(cam_color, cam_depth);
std::cout << "Camera parameters for color camera (from XML file): " << cam_color << std::endl;
std::cout << "Camera parameters for depth camera (from XML file): " << cam_depth << std::endl;
tracker.setDisplayFeatures(true);
vpHomogeneousMatrix depth_M_color;
{
std::ifstream file( (std::string(input_directory + "/depth_M_color.txt")).c_str() );
depth_M_color.load(file);
file.close();
}
std::map<std::string, vpHomogeneousMatrix> mapOfCameraTransformations;
mapOfCameraTransformations["Camera1"] = vpHomogeneousMatrix();
mapOfCameraTransformations["Camera2"] = depth_M_color;
tracker.setCameraTransformationMatrix(mapOfCameraTransformations);
std::cout << "depth_M_color: \n" << depth_M_color << std::endl;
std::map<std::string, const vpImage<unsigned char> *> mapOfImages;
mapOfImages["Camera1"] = &I_gray;
mapOfImages["Camera2"] = &I_depth;
std::map<std::string, std::string> mapOfInitFiles;
mapOfInitFiles["Camera1"] = init_file;
tracker.initClick(mapOfImages, mapOfInitFiles, true);
mapOfImages.clear();
pcl::PointCloud<pcl::PointXYZ>::Ptr empty_pointcloud(new pcl::PointCloud<pcl::PointXYZ>);
std::vector<double> times_vec;
try {
bool quit = false;
while (! quit) {
double t = vpTime::measureTimeMs();
read_data(frame_cpt, input_directory, I_color, I_depth_raw, pointcloud);
vpImageConvert::convert(I_color, I_gray);
vpImageConvert::createDepthHistogram(I_depth_raw, I_depth);
mapOfImages["Camera1"] = &I_gray;
std::map<std::string, pcl::PointCloud< pcl::PointXYZ >::ConstPtr> mapOfPointclouds;
if (disable_depth)
mapOfPointclouds["Camera2"] = empty_pointcloud;
else
mapOfPointclouds["Camera2"] = pointcloud;
tracker.track(mapOfImages, mapOfPointclouds);
vpHomogeneousMatrix cMo = tracker.getPose();
std::cout << "iter: " << frame_cpt << " cMo:\n" << cMo << std::endl;
tracker.display(I_gray, I_depth, cMo, depth_M_color*cMo, cam_color, cam_depth, vpColor::red, 3);
vpDisplay::displayFrame(I_gray, cMo, cam_color, 0.05, vpColor::none, 3);
vpDisplay::displayFrame(I_depth, depth_M_color*cMo, cam_depth, 0.05, vpColor::none, 3);
times_vec.push_back(t);
std::stringstream ss;
ss << "Computation time: " << t << " ms";
vpDisplay::displayText(I_gray, 20, 20, ss.str(), vpColor::red);
vpDisplay::flush(I_depth);
if (vpDisplay::getClick(I_gray, button, false)) {
quit = true;
}
frame_cpt ++;
}
} catch (const vpException &e) {
std::cout << "Catch exception: " << e.getStringMessage() << std::endl;
}
std::cout << "\nProcessing time, Mean: " << vpMath::getMean(times_vec) << " ms ; Median: " << vpMath::getMedian(times_vec)
<< " ; Std: " << vpMath::getStdev(times_vec) << " ms" << std::endl;
return EXIT_SUCCESS;
}
#else
int main()
{
std::cout << "To run this tutorial, ViSP should be build with PCL library."
" Install libpcl, configure and build again ViSP..." << std::endl;
return EXIT_SUCCESS;
}
#endif