Geo Week News

November 29, 2017

The pressure is on: 3D capture must adapt to grow in AEC

A screenshot from SKUR.

Last month I attended the BIM Forum in Dallas, Texas, organized by the Association of General Contractors of America. This year, BIM Forum was held in conjunction with the USIBD‘s (U.S. Institute of Building Documentation) Fall Forum, the non-profit body that defines the level of accuracy standardization framework that is applied to many as-built scanning projects in North America. I was hoping to see a conference focused on information management procedures in the construction industry, with a heavy emphasis on users and service providers describing best practice when using 3D scanning or reality modelling to drive many construction procedures.

The event did not disappoint.

Everyone knows what a point cloud is–now the paradigm shifts to QA 

“Three years ago, we needed to explain what a point cloud was, now everyone knows.” [sic.]

Ken Smerz, Eco3D

Day 2 of BIM Forum had industry veteran Ken Smerz presenting a session called “Scanning 101.” In this general assembly session, Ken provided a very relevant summary of what scanning—and its associated point cloud deliverables—can provide for the construction industry. Though the presentation made it clear that point clouds are no longer a novelty, it was Ken’s Q&A and conclusions that I found most relevant, because they offered a way of gauging how people are really using reality capture for building documentation.

Ken’s conclusions highlighted a change in paradigm: While scanning, in the past, has been used most profitably in the collection of as-built data for the pre-build phase of a project, now the value of reality capture is in quality assurance (QA) and monitoring the project throughout the build.

The challenge is that there is no budget line-item for QA.

Ken Smerz presents

Increased automation; effects on staff and billable costs

We have written much about the opportunities provided by the ever-falling cost of the hardware that collects 3D representations of our environment. While its true that developments in technology and associated initiatives bring opportunities, they also bring organizational pressures.

Set this idea in the context of the presentation from Cindy Baldwin of VDCO Tech. Baldwin argued that there is a perception that technology and automation is going to replace jobs in construction, even going so far as to say that “the construction industry will lose 500,000 jobs by 2020 due to robots.”

Though many would argue that reality capture will bring about some of that automation that replaces jobs, Baldwin makes the point that this is not necessarily the case. Instead, she argues that reality capture will be a boon to the industry, and efficiencies and quality improvements will come from the reskilling and educating of the existing workforce to use reality capture, but under the important proviso that reality capture and related technologies are embedded in the whole construction process.

However, this creates a burden on everyone in the supply chain to become familiar with new concepts and technologies such as drones, laser scanning, and augmented reality, just as we have done just by asking all levels in the hierarchy of a project team structure to conform to BIM-related processes, policies, and procedures.  This is the organizational pressure I mentioned earlier.

First we had to learn BIM, and now…

Baldwin made a number of other great points about reality capture in construction.

  • Just as Ken Smerz explained that there is no budget line-item for laser scanning tools in QA, Baldwin made the analogous observation that architects that use AR or VR technologies to better display their designs do not charge extra for using these technologies.
  • She described how reality capture can now be considered one of the six current trends that are revolutionizing the AEC industry, joining a list that includes BIM, performance based design, virtual design and construction, LEAN, and integrated project delivery.
  • She explained how, when considering the implementation of a reality capture device, the focus needs to change from “How much does it cost me?” to “What is the value add?” To get there, we need to look at the costs and benefits of the data collected by reality capture systems as they affect the entire process.
  • When considering impacts to the entire construction process, she pointed out specific stages where reality capture now gets “real” for the construction industry. It is the value of the resultant beneficial processes that reality capture brings, and not the initial cost of the technology that therefore need to be evaluated.

Where reality capture gets “real” for construction


The reality capture industry needs to change its perception

In the discussion in the general forum following Ken Smerz’s introduction to scanning it became clear how the projected value of reality capture will be realized. We need to move our perception of what a reality capture device allows us to see, so that we think beyond just “knowing that something exists.” Cindy Baldwin reminded us that “reality capture does not mean anything without reality computing.”

Looking at these presentations and discussions together, you can see that BIM Forum further underlined an important point about reality capture. As an industry, while we might be rushing to produce the lowest-cost 3D imaging devices possible (or even increasingly sophisticated methods of streaming point clouds onto a user’s desktop), we need to focus more on the workflow and better address how the user can best exploit the product of reality capture.

What we need is an increased number of methods that permit the construction specialist to start working with the project relevant information that comes from reality capture, but without needing to think about the translation of the point cloud.

One step toward the necessary workflows has been taken by software applications that automatically convert a point cloud into a data model made of objects and geometries that are similar structure to the 3D design data used by the VDC engineer. (Pointfuse is a good example of this.) As mentioned in Cindy Baldwin’s presentation, additional steps are being taken by tools such as Verity and SKUR, which provide construction-relevant reporting verification.

The reality capture community has brought pressure on end users to understand concepts and technologies that are niche and abstract to their industry processes. From the perspective of the reality capture community, my view is that the most pressure, now, is on us. It is down to our community more than ever to focus less on the wow-factors introduced by reality capture, and even more on educating ourselves to provide end-user industry workflows that permit the users to reap the value from reality capture–without realizing that they are using reality capture at all.

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