The invention relates to a method for dynamic browsing of vehicle-mounted
mass point cloud data. According to a principle of a vehicle-mounted
laser measuring
system, a quick access
point cloud format and a corresponding memory structure are self-defined. For a
point cloud file with the format, the method comprises the following steps of setting the threshold value of the maximum point cloud loading number of a single file, and calculating the
thinning level of the
current point cloud file; according to the
thinning level and the total point number of the point cloud file, calculating the number of actually loaded point clouds in the
current point cloud file; according to the current available physical memory capacity of a computer, judging whether the point cloud file can be loaded into a memory or not; when the point cloud file can be loaded into the memory, resetting the threshold value of the maximum point cloud loading number of the single file; using a sectional
memory mapping method to load the point cloud file into the memory, and adopting a multi-thread technique to perform real-time
memory replacement and dot
cloud rendering according to circle indexes and point
cloud data in the memory, so as to realize the dynamic browsing of the vehicle-mounted
mass point
cloud data. The method has the advantages that the higher view displaying property can be obtained by shorter
response time, and the problem of dynamic browsing of the vehicle-mounted
mass point
cloud data in computers with common configuration is solved.