如何从点云创建距离图像（How to create a range image from a point cloud）

本教程演示如何从点云和给定传感器位置创建距离图像。该代码创建了漂浮在观察者前方的矩形示例点云。

#代码
首先，在你最喜欢的编辑器中创建一个叫做range_image_creation.cpp的文件，并在其中放置下面的代码：

#include 

int main (int argc, char** argv) {
  pcl::PointCloud pointCloud;
  
  // Generate the data
  for (float y=-0.5f; y<=0.5f; y+=0.01f) {
    for (float z=-0.5f; z<=0.5f; z+=0.01f) {
      pcl::PointXYZ point;
      point.x = 2.0f - y;
      point.y = y;
      point.z = z;
      pointCloud.points.push_back(point);
    }
  }
  pointCloud.width = (uint32_t) pointCloud.points.size();
  pointCloud.height = 1;
  
  // We now want to create a range image from the above point cloud, with a 1deg angular resolution
  float angularResolution = (float) (  1.0f * (M_PI/180.0f));  //  1.0 degree in radians
  float maxAngleWidth    = (float) (360.0f * (M_PI/180.0f));  // 360.0 degree in radians