Interpreting the DEM

[GregorySukull]

Hi All,

I have attached an image of a DEM generated from an aerial survey. I was using version 1.0 at the time. Could you knidly help me to interpret it. Why I am asking is because there are some areas showing -45m and I am not sure why.

Thanks

Gregory Sukull

[frank.stremke]

on the eges of the model you usualy have non vailid data make sure to scan a larger area and then crop to an extend where you still have enough overlayand not just the forward looking stereo image
frank

[GregorySukull]

Thanks Frank

[Alexey Pasumansky]

Hello Gregory,

The elevation model also looks like the model is distorted and "bowled" - higher in the center and lower in the middle. You might need to optimize the camera alignment, if the coordinates of the cameras or markers are present.