MetaVR Photo-Specific 3D Content

A subset of the MetaVR™ 3D content libraries includes 3D entity models built using photographically-specific textures. Such models contain a one-to-one mapping of photographic elements to unique geometry such that there are no repeating textures. Other entities are a hybrid of photo-specific and photo-realistic textures.

	NEWEST Photo-Specific and Hybrid modelS

	Available Photo-Specific and Hybrid models

Note that some models in the MetaVR 3D content military vehicle library are "hybrids" in their texture makeup; they are approximately 75-80% photo-specific, with the remaining textures photo-realistic. The Buffalo MRAP, F-15C, F-16C, Hunter UAV, and ZILI31H models shown above are examples of this type of model.

Example of model creation

MetaVR has created a photo-specific 3D model of the M1A2 Tank Urban Survivability Kit (TUSK) vehicle. This model was based on 430 photographs high-resolution digital photographs MetaVR took of the actual vehicle in 2007, which resulted in 1.45 GB of source data. This source data and MetaVR’s photo-specific model standard were used to create the 3D model. The resulting M1A2 TUSK model maintains real-time performance in MetaVR’s Virtual Reality Scene Generator™ (VRSG™)

	VRSG screen capture of a street scene featuring the M1A2 TUSK entity on MetaVR's virtual Baghdad database.

MetaVR’s M1A2 TUSK model is comprised of 12,505 polygons and 16 photo-specific textures (112 MB of textures).

Below is set of images from which you can compare photographs taken of the M1A2 TUSK (leftmost) with textured and wireframe views of the M1A2 TUSK model.

For MetaVR customers under active maintenance, MetaVR accepts requests to build models that are not currently in the library, at no additional charge.

Model specification

MetaVR’s photo-specific 3D content standard specifies requirements for both the required source data and resulting 3D model complexity to provide a high degree of realism for real- time simulations. The specification for building a MetaVR photo-specific model consists of the following requirements:

• Digital photographs (10- to 14-megapixels) of the vehicle taken during a recent public military exhibition of perspectiveless views of all major visible exterior surfaces at a distance between 0.5m and 5m from the vehicle, and three-quarter views of the vehicle to provide overall context for detailed images.
• Resulting composite texture maps of .004 meter resolution or better. (This means an observer should be able to discern details of 4 mm or greater in size.)
• Model geometry of a minimum of 12,000 polygons, and five levels of detail (LODs) of geometry and textures.
• Three damage states: disabled firepower, disabled mobility, and catastrophic damage.
• Animated tracks and/or wheels with resulting particle-based dust trails and vehicle exhaust.
• Modeling of all light-emitting features.
• Material codes mapping for the major components should support time-of-day dependent physics-based thermal models (which may be encoded within the textures).
• A resulting 3D model with a set of 2048 x 2048 pixel texture maps whereby each photographic element is assigned to a unique geometric surface (some limited reuse of textures is applicable as in the case of multiple road wheels).