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Filename extension | .qtvr |
---|---|
Internet media type | video/quicktime x-world/x-qtvr |
Developed by | Apple Inc. |
Initial release | July 1995[1] |
Type of format | Image file format |
Contained by | QuickTime File Format |
Open format? | No |
QuickTime VR (also known as QTVR) 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.
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. [2]
The first way I did panoramic photography was a little bit of a cheat. So what you do is, you take a million pictures and you animate between them. I did all this with a single camera, because imagining the matrix of cameras we now use was just too expensive. It was extremely onerous, the stitching and all of that. It was quite a lot of work. The head-mounted VR did exist at that time. So it was a poor man's VR. Calling it VR was controversial and somewhat presumptuous.
— Dan O'Sullivan, early QuickTime VR engineer [2]
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. [3] : 99 Apple sold the content authoring tools for US$2,000(equivalent to $4,000 in 2023) 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. [3] : 100 Upon launch, it was a supporting technology in digital publications such as the Star Trek: The Next Generation Interactive Technical Manual. [2] [3] : 100 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. [4]
The platform was deemphasized upon the return of Steve Jobs to Apple in 1997. [2] The discontinuation of QuickTime 7 in the late 2000s brought the end of development and support of QuickTime VR and other major technologies.
Panoramas are panoramic images which surround the viewer with an environment (inside, looking out), 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:
Panoramas are further divided into those that include the top and bottom, called cubic or spherical panoramas, and those that do not, usually called cylindrical.
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:
Each of these are typically subdivided or tiled into several smaller images, and stored in a special kind of QuickTime movie file, which requires the QuickTime plugin.
Hot spots can be embedded into the panorama, which when selected can invoke some action, for example moving to another panorama node.
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 (usually 10°) 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.
In 1995, MacWorld cited some pioneering multimedia developers with a shared viewpoint fanatically in favor of QuickTime VR technology but against Apple's $0.40-$0.80 royalty fee per commercial CD-ROM unit plus $2,000(equivalent to $4,000 in 2023) fee for authoring tools, and some halting their existing efforts in protest. The magazine's exhaustive overview concluded with this: "QuickTime VR is an impressive achievement that reinforces Apple's role as the innovator in personal computer multimedia. But Apple's zeal to turn QuickTime VR into a profit center may slow its initial adoption and perhaps even relegate it to the backseat of Microsoft's limousine. As this issue went to press, Apple was reconsidering its requirement that developers pay royalties on titles that incorporate QuickTime VR. As well it should." [3] : 108
In 2016, Business Insider reflected on the long-term impact of QuickTime VR: "It's difficult not to read about Apple's experiments with panoramic images and not draw a connection to the recent rise of 360-degree videos on platforms like Facebook and YouTube — or even the immersive aspects of services like Google Maps Street View. Much of what's called VR these days isn't a full interactive environment, but is instead a descendant of the panoramic images that Apple pioneered."
A view camera is a large-format camera in which the lens forms an inverted image on a ground-glass screen directly at the film plane. The image is viewed, composed, and focused, then the glass screen is replaced with the film to expose exactly the same image seen on the screen.
A panorama is any wide-angle view or representation of a physical space, whether in painting, drawing, photography, film, seismic images, or 3D modeling. The word was coined in the 18th century by the English painter Robert Barker to describe his panoramic paintings of Edinburgh and London. The motion-picture term panning is derived from panorama.
In photography and cinematography, a wide-angle lens is a lens covering a large angle of view. Conversely, its focal length is substantially smaller than that of a normal lens for a given film plane. This type of lens allows more of the scene to be included in the photograph, which is useful in architectural, interior, and landscape photography where the photographer may not be able to move farther from the scene to photograph it.
Panoramic photography is a technique of photography, using specialized equipment or software, that captures images with horizontally elongated fields of view. It is sometimes known as wide format photography. The term has also been applied to a photograph that is cropped to a relatively wide aspect ratio, like the familiar letterbox format in wide-screen video.
VR may refer to:
This article contains a list of cinematic techniques that are divided into categories and briefly described.
A virtual tour is a simulation of an existing location, usually composed of a sequence of videos, still images or 360-degree images. It may also use other multimedia elements such as sound effects, music, narration, text and floor map. It is distinguished from the use of live television to affect tele-tourism.
Image stitching or photo stitching is the process of combining multiple photographic images with overlapping fields of view to produce a segmented panorama or high-resolution image. Commonly performed through the use of computer software, most approaches to image stitching require nearly exact overlaps between images and identical exposures to produce seamless results, although some stitching algorithms actually benefit from differently exposed images by doing high-dynamic-range imaging in regions of overlap. Some digital cameras can stitch their photos internally.
Virtual cinematography is the set of cinematographic techniques performed in a computer graphics environment. It includes a wide variety of subjects like photographing real objects, often with stereo or multi-camera setup, for the purpose of recreating them as three-dimensional objects and algorithms for the automated creation of real and simulated camera angles. Virtual cinematography can be used to shoot scenes from otherwise impossible camera angles, create the photography of animated films, and manipulate the appearance of computer-generated effects.
A rotating line camera is a digital camera that uses a linear CCD array to assemble a digital image as the camera rotates. The CCD array may consist of three sensor lines, one for each RGB color channel. Advanced rotating line cameras may have multiple linear CCD arrays on the focal plate and may capture multiple panoramic images during their rotation.
Perspective control is a procedure for composing or editing photographs to better conform with the commonly accepted distortions in constructed perspective. The control would:
Photosynth is a discontinued app and service from Microsoft Live Labs and the University of Washington that analyzes digital photographs and generates a three-dimensional model of the photos and a point cloud of a photographed object. Pattern recognition components compare portions of images to create points, which are then compared to convert the image into a model. Users are able to view and generate their own models using a software tool available for download at the Photosynth website.
360-degree videos, also known as surround video, or immersive videos or spherical videos, are video recordings where a view in every direction is recorded at the same time, shot using an omnidirectional camera or a collection of cameras. The term 360x180 can be used to indicate 360° of azimuth and 180° from nadir to zenith. During playback on normal flat display the viewer has control of the viewing direction like a panorama. It can also be played on a display or projectors arranged in a sphere or some part of a sphere.
VR photography is the interactive viewing of panoramic photographs, generally encompassing a 360-degree circle or a spherical view. The results is known as VR photograph, 360-degree photo, photo sphere, or spherical photo, as well as interactive panorama or immersive panorama.
CleVR is a free panoramic photo sharing site and photo stitching software. It allows panoramas to be embedded into other web pages using a Flash viewer. Panoramas can be displayed with hotspots — areas in the scene that can be clicked to display other content or to navigate to another scene. This functionality is similar to that provided by Apple's QuickTime VR, but it allows images, text and Flash Video (FLV) video to be displayed within the panorama window.
In photography, an omnidirectional camera, also known as 360-degree camera, is a camera having a field of view that covers approximately the entire sphere or at least a full circle in the horizontal plane. Omnidirectional cameras are important in areas where large visual field coverage is needed, such as in panoramic photography and robotics.
360 photography refers to a photographic technique by which a series of photos give the impression of an object rotating. These photos can be displayed as an interactive animation on web pages and apps, allowing a user to control the rotation of an object. The photos can also be displayed as an infinitely looping GIF or video.
Google Cardboard is a discontinued virtual reality (VR) platform developed by Google. Named for its fold-out cardboard viewer into which a smartphone is inserted, the platform was intended as a low-cost system to encourage interest and development in VR applications. Users can either build their own viewer from simple, low-cost components using specifications published by Google, or purchase a pre-manufactured one. To use the platform, users run Cardboard-compatible mobile apps on their phone, place it into the back of the viewer, and view content through the lenses.
Cinematic virtual reality (Cine-VR) is an immersive experience where the audience can look around in 360 degrees while hearing spatialized audio specifically designed to reinforce the belief that the audience is actually in the virtual environment rather than watching it on a two-dimensional screen. Cine-VR is different from traditional Virtual Reality which uses computer generated worlds and characters more akin to interactive gaming engines, while cine-VR uses live images captured thorough a camera which makes it more like film.
Years before Google and Oculus started daydreaming about virtual reality, Apple already had a "VR" product on the market. Apple called it QuickTime Virtual Reality, or QuickTime VR.