livox入门

1.安装配置

git clone https://github.com/Livox-SDK/Livox-SDK.git
cd Livox-SDK
cd build && cmake ..
make
sudo make install

2.取流

在/Livox-SDK/sample/lidar_lvx_file目录下修改CMakeList.txt信息，添加opencv pcl之类

cmake_minimum_required(VERSION 3.0)

set(DEMO_NAME lidar_lvx_sample)


find_package(PCL 1.2 REQUIRED)
include_directories(${PCL_INCLUDE_DIRS})
add_definitions(${PCL_DEFINITIONS})

message(STATUS "pcl status:")
message(STATUS "    version: ${pcl_VERSION}")
message(STATUS "    libraries: ${PCL_LIBS}")
message(STATUS "    include path: ${PCL_INCLUDE_DIRS}")

add_executable(${DEMO_NAME} main.cpp lvx_file.cpp)
target_link_libraries(${DEMO_NAME}
        PRIVATE
        ${PROJECT_NAME}_static
	${PCL_LIBRARIES}
        )

其数据类型参加SDK介绍部分，具体和livox型号有关，并且单帧的数据和积分时间有关

typedef pcl::PointXYZRGBA PointT;
typedef pcl::PointCloud<PointT> PointCloud;

PointCloud::Ptr cloud(new PointCloud);

      for(int i=0; i<nump; i++)200ms是存储最低时间，nump表示存储nump*200ms的数据作为一张
      {
          std::list<LvxBasePackDetail> point_packet_list_temp;去掉for循环只取单帧数据
          {
             std::unique_lock<std::mutex> lock(mtx);
             point_pack_condition.wait_for(lock, milliseconds(kDefaultFrameDurationTime) - (steady_clock::now() - last_time));
             last_time = steady_clock::now();
             point_packet_list_temp.swap(point_packet_list);
          }
          if(point_packet_list_temp.empty()) {
              printf("Point cloud packet is empty.\n");
              break;
          }

        for(auto iter=point_packet_list_temp.begin();iter!=point_packet_list_temp.end();iter++)
        {
            if(iter->data_type !=2) continue;jiang0624
            // std::cout<<"size:"<<(int)iter->pack_size<<std::endl;
            // std::cout<<"device_index:"<<(int)iter->device_index<<std::endl;
            // std::cout<<"version:"<<(int)iter->version<<std::endl;
            // std::cout<<"port_id:"<<(int)iter->port_id<<std::endl;
            // std::cout<<"lidar_index:"<<(int)iter->lidar_index<<std::endl;
            // std::cout<<"rsvd:"<<(int)iter->rsvd<<std::endl;
            // std::cout<<"error_code:"<<(int)iter->error_code<<std::endl;
            // std::cout<<"timestamp:"<<(int)iter->timestamp_type<<std::endl;
            // std::cout<<"data_type:"<<(int)iter->data_type<<std::endl;

            int **rawPoint=new int *[96];
            for(int raw=0;raw<96;raw++)
            {
                rawPoint[raw]=new int[length];
            }
            //memset((char*)&rawPoint[0][0],0,96*length*sizeof(int));
            for (int flag=0;flag<length*96;flag++)
            {
                rawPoint[flag/length][flag%length]=iter->raw_point[flag];
            }
            for(int j=0;j<96;j++)
            {
                // POINTS.push_back(Dec4ToBin(rawPoint[j][0],rawPoint[j][1],rawPoint[j][2],rawPoint[j][3]));//x
                // POINTS.push_back(Dec4ToBin(rawPoint[j][4],rawPoint[j][5],rawPoint[j][6],rawPoint[j][7]));//y
                // POINTS.push_back(Dec4ToBin(rawPoint[j][8],rawPoint[j][9],rawPoint[j][10],rawPoint[j][11]));//z

                PointT p;
                p.x=(float)(Dec4ToBin(rawPoint[j][0],rawPoint[j][1],rawPoint[j][2],rawPoint[j][3]))/1000.0;
                p.y=(float)(Dec4ToBin(rawPoint[j][4],rawPoint[j][5],rawPoint[j][6],rawPoint[j][7]))/1000.0;
                p.z=(float)(Dec4ToBin(rawPoint[j][8],rawPoint[j][9],rawPoint[j][10],rawPoint[j][11]))/1000.0;

                p.rgba = rawPoint[j][12];
                //std::cout<<p.x<<", "<<p.y<<", "<<p.z<<std::endl;


                cloud->points.push_back(p);
                //std::cout<<cloud->size()<<std::endl;
  
            }
            for(int raw2=0;raw2<96;raw2++)
            {
                delete []rawPoint[raw2];
            }
            delete [] rawPoint;

        }
      }

其中解算部分

int DecToBin(uint8_t dec1)
  {
    int result=0,temp=dec1,j=1;
    while(temp)
    {
      result=result+j*(temp%2);
      temp=temp/2;
      j=j*10;
    }
    return result;
  }

int Dec4ToBin(uint8_t Dec1,uint8_t Dec2,uint8_t Dec3,uint8_t Dec4)
{
	int result1 = DecToBin(Dec1);
	int result2 = DecToBin(Dec2);
	int result3 = DecToBin(Dec3);
	int result4 = DecToBin(Dec4);

  // std::cout<<result1<<","<<result2<<","<<result3<<","<<result4<<std::endl;

	char *resultChar = (char *)malloc(32);
	sprintf(resultChar,"%.8d%.8d%.8d%.8d",result4,result3,result2,result1);//补位到8
  // std::cout<<resultChar<<std::endl;
	int i=0,n=0,m=1,result=0;
	while (resultChar[i++])
		n++; 
	for (i = 0; i<n; i++)
	{
		result = result + (resultChar[n - i - 1] - '0')*m;
		m *= 2;  
	}
  free(resultChar);

	return  result;
}

标签：rawPoint,入门,temp,point,int,livox,Dec4ToBin,list
来源： https://blog.csdn.net/sinat_41498648/article/details/122507057