Ejemplo n.º 1
0
 /*!
  * Initializes the geometry of a grid map from an image. This changes
  * the geometry of the map and deletes all contents of the layers!
  * @param[in] image the image.
  * @param[in] resolution the desired resolution of the grid map [m/cell].
  * @param[out] gridMap the grid map to be initialized.
  * @param[in](optional) position the position of the grid map.
  * @return true if successful, false otherwise.
  */
 static bool initializeFromImage(const cv::Mat& image, const double resolution,
                                 grid_map::GridMap& gridMap, const grid_map::Position& position)
 {
   const double lengthX = resolution * image.rows;
   const double lengthY = resolution * image.cols;
   Length length(lengthX, lengthY);
   gridMap.setGeometry(length, resolution, position);
   return true;
 }
Ejemplo n.º 2
0
bool GridMapRosConverter::initializeFromImage(const sensor_msgs::Image& image,
                                              const double resolution, grid_map::GridMap& gridMap, const grid_map::Position& position)
{
  const double lengthX = resolution * image.height;
  const double lengthY = resolution * image.width;
  Length length(lengthX, lengthY);
  gridMap.setGeometry(length, resolution, position);
  gridMap.setFrameId(image.header.frame_id);
  gridMap.setTimestamp(image.header.stamp.toNSec());
  return true;
}
bool GridMapRosConverter::fromOccupancyGrid(const nav_msgs::OccupancyGrid& occupancyGrid,
                                            const std::string& layer, grid_map::GridMap& gridMap)
{
  const Size size(occupancyGrid.info.width, occupancyGrid.info.height);
  const double resolution = occupancyGrid.info.resolution;
  const Length length = resolution * size.cast<double>();
  const string& frameId = occupancyGrid.header.frame_id;
  Position position(occupancyGrid.info.origin.position.x, occupancyGrid.info.origin.position.y);
  // Different conventions of center of map.
  position += 0.5 * length.matrix();

  const auto& orientation = occupancyGrid.info.origin.orientation;
  if (orientation.w != 1.0 && !(orientation.x == 0 && orientation.y == 0
      && orientation.z == 0 && orientation.w == 0)) {
    ROS_WARN_STREAM("Conversion of occupancy grid: Grid maps do not support orientation.");
    ROS_INFO_STREAM("Orientation of occupancy grid: " << endl << occupancyGrid.info.origin.orientation);
    return false;
  }

  if (size.prod() != occupancyGrid.data.size()) {
    ROS_WARN_STREAM("Conversion of occupancy grid: Size of data does not correspond to width * height.");
    return false;
  }

  if ((gridMap.getSize() != size).any() || gridMap.getResolution() != resolution
      || (gridMap.getLength() != length).any() || gridMap.getPosition() != position
      || gridMap.getFrameId() != frameId || !gridMap.getStartIndex().isZero()) {
    gridMap.setTimestamp(occupancyGrid.header.stamp.toNSec());
    gridMap.setFrameId(frameId);
    gridMap.setGeometry(length, resolution, position);
  }

  // Reverse iteration is required because of different conventions
  // between occupancy grid and grid map.
  grid_map::Matrix data(size(0), size(1));
  for (std::vector<int8_t>::const_reverse_iterator iterator = occupancyGrid.data.rbegin();
      iterator != occupancyGrid.data.rend(); ++iterator) {
    size_t i = std::distance(occupancyGrid.data.rbegin(), iterator);
    data(i) = *iterator != -1 ? *iterator : NAN;
  }

  gridMap.add(layer, data);
  return true;
}
Ejemplo n.º 4
0
bool GridMapRosConverter::fromMessage(const grid_map_msgs::GridMap& message, grid_map::GridMap& gridMap)
{
  gridMap.setTimestamp(message.info.header.stamp.toNSec());
  gridMap.setFrameId(message.info.header.frame_id);
  gridMap.setGeometry(Length(message.info.length_x, message.info.length_y), message.info.resolution,
                      Position(message.info.pose.position.x, message.info.pose.position.y));

  if (message.layers.size() != message.data.size()) {
    ROS_ERROR("Different number of layers and data in grid map message.");
    return false;
  }

  for (unsigned int i = 0; i < message.layers.size(); i++) {
    Matrix data;
    multiArrayMessageCopyToMatrixEigen(message.data[i], data); // TODO Could we use the data mapping (instead of copying) method here?
    // TODO Check if size is good.   size_ << getRows(message.data[0]), getCols(message.data[0]);
    gridMap.add(message.layers[i], data);
  }

  gridMap.setBasicLayers(message.basic_layers);
  gridMap.setStartIndex(Index(message.outer_start_index, message.inner_start_index));
  return true;
}