3D reconstruction uses input data to recreate an object in a virtual space. There are two approaches: active and passive. It has medical and law enforcement uses, and is used in creating 3D graphics for film and television.
3D reconstruction is a method by which an object is recreated within a three-dimensional (3D) virtual space using a computer. This can be done in many different ways, but usually involves the use of input data such as two-dimensional (2D) photographs or a scan of the actual object. Once this 3D reconstruction is created, it can be manipulated or used in a variety of ways, including medical uses, law enforcement reconstructions, and even creating 3D graphics for film or television.
Creating a 3D reconstruction usually involves digital imaging professionals, rather than computer 3D modelers, as images are not usually created so much as they are assembled. There are two basic approaches to this type of reconstruction that can be used, based on how the people involved gather input data for the reconstruction. Active reconstruction involves some form of interference between the object being reconstructed and a sensor, such as scanning an object or taking a photograph of it. Passive 3D reconstruction, on the other hand, uses sensors that receive data without interfering with the object at all, such as devices used to receive light from distant stars.
This input data can then be used to create a 3D reconstruction of the original object or objects. A scan of a person’s body, for example, can be used to create a 3D model of that person in a computer system. Similarly, passive scans of distant stars could be used to create a 3D model of a distant galaxy or to create an animated sequence showing the movement of several stars in virtual space.
The medical uses of 3D reconstruction are quite extensive, especially when used with magnetic resonance imaging (MRI) equipment that allows medical professionals to see a 3D model of a brain without performing surgery. These reenactments are also used for a variety of different reasons in law enforcement. A 2D photograph can be used to create a 3D model of a person to more accurately represent what it might look like, and even a skull can be used to do such reconstructions.
3D computer graphics for film and television can also use this type of 3D reconstruction to create more realistic images. A scan of an actor, for example, can be used to create a highly realistic 3D model of that actor, which is then used to create a digital stuntman capable of performing stunts that might be impossible for a person. Reconstructions are often used to create realistic 3D models of environments or objects, such as cars, to create images for commercials that are more perfect than reality.
Protect your devices with Threat Protection by NordVPN
