pyrealsense2定点x y z坐标

 import pyrealsense2 as rs

    
 import numpy as np
    
 import cv2
    
  
    
 # Declare pointcloud object, for calculating pointclouds and texture mappings
    
 pc = rs.pointcloud()
    
 # We want the points object to be persistent so we can display the last cloud when a frame drops
    
 points = rs.points()
    
  
    
  
    
 pipeline = rs.pipeline()
    
 config = rs.config()
    
 config.enable_stream(rs.stream.depth, 640, 480, rs.format.z16, 15)
    
 config.enable_stream(rs.stream.color, 640, 480, rs.format.bgr8, 15)
    
  
    
 # Start streaming
    
 p