Aviation Investigation Report A98H0003

1.19.2  Data Analysis Tools

  1. - Photographic Panoramas and Object Models
  2. - Computer-Aided Design Analysis
  3. - Integrated Access to Electronic Data  Photographic Panoramas and Object Models

Panoramas and object models of various items within the aircraft were created by taking a series of static photographs from various orientations. Object models were created by rotating an object in 10-degree increments in front of a fixed camera. Panoramas were created by fixing the object and rotating the camera. In both cases, "stitching" software[111] was used to combine the multiple individual photographs to create a two-dimensional rendering of the object. Additional software utilities allowed investigators to view these renderings with a standard web browser, to electronically rotate the images on a two-dimensional plane and to navigate between objects.  Computer-Aided Design Analysis

Three-dimensional CAD drawings of the aircraft were received from the aircraft manufacturer.

CAD models[112] of the aircraft structure were developed and were cross-referenced to information about recovered components. Internet browser plug-ins[113] provided the capability to view these CAD drawings with a standard web browser. These tools were used to analyze the routing and spatial orientation of various components, to review temperature patterns, to study the airflow within the aircraft, and to develop fire propagation scenarios.  Integrated Access to Electronic Data

A PRODOCs[114] software application was developed by the TSB to provide a single point of access to investigation data from the RCMP's Evidence and Reports III database, the SUPERText® Research database of hard-copy documents, the photograph database, and the wiring database. It also provides links to other related tools, resources, and applications, including the Cabin Safety Research Technical Group accident database, technical notes, photographic panoramas and object models, two-dimensional and three-dimensional CAD diagrams, and video clips of various investigation activities.

[111]    Object Modeller 1.0 and PhotoVista 1.0, both included with Reality Studio software by Live Picture, Inc.

[112]    Computer-aided design models were created using Microstation software by Bentley Systems Inc.

[113]    Whips 2D viewer and Voloview 3D viewer by Autodesk Inc.

[114]    The acronym PRODOCs was used to reflect that photographs, references, object models, and documents can be accessed from this application.

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