在点云数据集中解压RGB值

This is regarding unpacking the encoded rgb values in a pcl file. I did this with the procedure described in the pcl documentation, but the unpacked rgb values I get are not quite correct. When I plot them with R the representation given does not correspond to the colors in the real setting (I am to a certain degree sure the problem is not with the way it was plotted with R). This is regarding unpacking the encoded rgb val