DEM/DSM generated from LiDAR point clouds

gamage

Hi All,

 

I have a general question and looking forward a favorable response.

 

For my experiments, I have been received few .adf files corresponding to DSM and DEM having 1m resolution. It is said that these products were generated using classified ground LiDAR points. But I don’t have any information or files relevant to break lines.

 

I feel that the data processor has generated the DEMs without creating break-lines. Do you think that this is a correct feeling? If he has created the break-lines do you think does he should produce this product with the DEMs? (Asking what is happening commercially in the world to know the situation)

 

I want to know without break-lines, can someone generate accurate DEMs/DSMs?

 

If the data processing person had used the break-lines for DEM generation, then does the accuracy of DEM/DSM is better than those that produce without break-lines?

 

My last question is, since I have the classified ground LiDAR and also .adf DEMs, can I improve the accuracy by myself? For that what should I do? How can I do this with Global Mapper?

Thanks

bmg_bob

Duplicate post.  Original is here.