The Photogrammetry Model for Data Acquisition

In talking with a mobile laser scanning service provider today he recommended that the departments of transportation in the US adopt the same approach with MLS as they did with photogrammetry over the past 30+ years. Namely, that they leave the data acquisition to the service providers and focus internally on data processing and management.

Given the rate of change in technology and the size of the investment this would seem to be a reasonable approach, but without knowing the facts in each DOT it is probably not wise to prejudge. I would think that if the DOTs could be assured of the availability of in-state service provider, or at least one nearby then they might look at the situation differently.

I was told by one savvy survey company owner a few months back that he did not see how the national MLS service provider model was going to survive. It certainly would seem to be inefficient to drive a thousand miles just to collect a few days data, but we live in a free country, thankfully, so we will have to see how it all shakes out.

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1 Response to The Photogrammetry Model for Data Acquisition

  1. Bob Gaspirc says:

    This model works when the “collector” has the competencies to do the work in a consistent fashion; and the receiver has the competencies to check the work for completeness. We require contractors to provide a warranty statement (for two years) that the product was collected to plan as per their quality assurance plan and that its fit for our intended business purpose. This mean that in our engagement letter, we need to explicit in what we want and why we want it. The two years gives the product enough client exposure that if there are problems with it they will be found and in turn, the contractor agrees to “fix it at no cost to the city”. (ie fix ghosting, artifacts, spikes in DEM at bridges etc)

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