QuickTime VR
QuickTime VR is an image file format developed by Apple Inc. for QuickTime, and discontinued along with QuickTime 7. It allows the creation and viewing of VR photography, photographically captured panoramas, and the viewing of objects photographed from multiple angles. It functions as plugins for the QuickTime Player and for the QuickTime Web browser plugin.
History
QuickTime VR was conceived in 1991 by programmers Eric Chen and Ian Small of the Human Interface Group in the Advanced Technology Group at Apple, utilizing a Cray supercomputer to process images into panoramas. It was soon made prominent within the company by Apple's board member and former astronaut Sally Ride, who was fascinated by the demonstrated possibilities of 3D computer imagery.It was publicly launched in 1995 as part of QuickTime 2, by a dedicated group including Chen, Small, senior content engineer Ted Casey, and program manager Eric Zarakov. Apple sold the content authoring tools for plus a $0.40-0.80 royalty fee per commercial CD-ROM disc depending on the number of QuickTime VR movies, or no royalty charge for non-commercial usage. Upon launch, it was a supporting technology in digital publications such as the Star Trek: The Next Generation Interactive Technical Manual. The first high-profile public application of QuickTime VR is the 1995 courtroom visualization of the crime scenes in the O. J. Simpson murder case.
The platform was deemphasized upon the return of Steve Jobs to Apple in 1997. The discontinuation of QuickTime 7 in the late 2000s brought the end of development and support of QuickTime VR and other major technologies.
Overview
Panoramas
Panoramas are panoramic images which surround the viewer with an environment, yielding a sense of place.They can be stitched together from several normal photographs or 2 images taken with a circular fisheye lens, or captured with specialized panoramic cameras, or rendered from 3D-modeled scenes.
There are two types of panoramas:
- Single row panoramas, with a single horizontal row of photographs.
- Multi-row panoramas, with several rows of photographs taken at different tilt angles.
File:Panorama-RainyCourtyard.jpg|thumb|600px|center|This cylindrical panorama was shot with a Nikon Coolpix 5000 and stitched with Apple Inc.'s QuickTime Authoring Studio.
A single panorama, or node, is captured from a single point in space. Several nodes and object movies can be linked together to allow a viewer to move from one location to another. Such multinode QuickTime VR movies are called scenes.
Apple's QuickTime VR file format has two representations for panoramic nodes:
- cylindrical, consisting of one 360° image wrapped around the viewer
- cubic, consisting of a cube of six 90° × 90° images surrounding the viewer.
Hot spots can be embedded into the panorama, which when selected can invoke some action, for example moving to another panorama node.
Objects
In contrast to panoramas, which are captured from one location looking out at various angles, objects are captured from many locations pointing in toward the same central object.The simplest type of objects to capture are single row, typically captured around the equator of an object. This is normally facilitated by a rotating turntable. The object is placed on the turntable, and photographed at equal angular increments from a camera mounted on a tripod.
Capturing a multi-row object movie requires a more elaborate setup for capturing images, because the camera must be tilted above and below the equator of the object at several tilt angles.