Virtual tour is a simulation of an existing location, usually consisting of a series of videos or still images. It may also use other multimedia elements such as sound effects, music, narration, and text. This is distinguished from the use of direct television to influence tele-tourism.
The phrase "virtual tour" is often used to describe various video and photo-based media. Panorama shows an uninterrupted view, because the panorama can be a series of panning photos or video footage. However, the phrases "panoramic tour" and "virtual tour" are mostly associated with virtual tours created using still cameras. Such a virtual tour consists of a number of shots taken from a single point of view. Cameras and lenses are rotated around what is called a parallax point (the exact point at the back of the lens where the light is fused).
The video tour is a full motion video of the location. Unlike the static wrap-around feel of a virtual tour, a video tour is a straight line from a location. Using a video camera, the location is filmed at a walking speed while moving continuously from one point to another across the subject's location.
Video Virtual tour
History
The origin of the term 'virtual tour' dates from 1994. The first example of a virtual tour is a museum visitor's interpreter tour, which consists of 3D walk-throughs of 3D Dudley Castle in England as it was in 1550. It consists of a laser-based system that controlled by computers designed by UK-based engineer Colin Johnson.
One of the first users of the virtual tour was Queen Elizabeth II, when she officially opened the visitor center in June 1994. Since the Queen's official had requested the title, description and instruction of all activities, the system was named and described as: "Virtual Tur, cross between Virtual Reality and Royal Tour. "The original project details can be viewed online. The system was featured in a conference hosted by the British Museum in November 1994 and in subsequent technical papers.
Maps Virtual tour
Creation method
Merge photos
There are several ways to combine virtual tours together.
- Straight line connection
This involves the rotation of a digital camera, usually in portrait position (top and bottom) and centered directly on a tripod. Because the operator manually turns the camera clockwise, the camera stops or clicks into a detent periodically, like every 30 ° rotation. Rotator can be adjusted by changing the position of "detent ring or bolt," to another slot, to change the rotation interval: 40 Â °, 60 Â °, 90 Â ° etc.
If a given camera lens supports a wider view, one can choose a larger detent value (for example, 60 Â ° than 30 Â °). With a larger arrest interval, fewer images are required to capture a complete panoramic view. Photographers may only need to take 6 shots compared to 10 shots to capture the same panorama. The combination of precision rotators and digital cameras allows photographers to take a rectangular "slice" of any scene (indoors or outdoors). With typical dots and digital camera recording, the photographer will take 8, 10, 12 or 14 scene slices. Using a special "photo stitching" software, the operator then assembles "slices" into a single rectangular image, typically 4,500 pixels up to 6,000 pixels wide. This technique, though very time consuming, remains popular even today because the equipment required, the head of the player and the software is relatively inexpensive and easy to learn. The stitched panorama view is also called "cylindrical" - because the stitched panorama allows repeat in 360 °, but offers a finite vertical plane about 50 ° above or below the horizon line.
- Spherical splicing
This method requires the use of lens "Fisheye lens" equipped with SLR digital camera. The 2-shot fish eye camera system was made popular by IPiX in the mid-1990s and two-shot rotator heads that were rotated and locked in positions 0 ° and 180 ° only. The camera is an Olympus or Nikon CoolPix camera and the lens used is the Nikon FC-E8 or FC-E9 eye lens. The IPiX 360 camera system allows photographers to take 360-degree 360-degree, floor-to-ceiling images of any scene with just 4 shots compared to the longer time that produces the 8, 10, or 12-square panorama generated results described above. This virtual tour type requires a more expensive virtual tour camera equipment including (for example) an 8mm f/3.5 Sigma lens that allows the photographer to set the rotator head to 90 ° and capture a complete virtual tour of each scene in only 4 images (0 °, 90 Â °, 180 Â °, 270 Â ° Â °).
- Cubic connections
This technique is one of the first forms of a floor-to-ceiling virtual tour. Apple Computer pioneered this with the release of QuickTime VR Apple in the early 1990s. Free utility software like Cubic Converter and others allow photographers to sew and transform their panoramas into boxes like "cubes" to achieve a complete 360 ​​X 360 view. Currently, this technique is considered an "old school," and ball splicing has become more common for producing these types of tours.
- One-shot optics
By using single-shot panoramic optics, you can create panoramic videos and images as easily and quickly as the types used on the iPhone.
While programs like Adobe Photoshop have new features that allow users to stitch together images, they only support "rectilinear" stitching types. Photoshop can not produce them quickly or accurately as a software program stitch can be like Autodesk Stitcher. This is because there are sophisticated math and camera lens profiles required to create desired panoramic images based on the depth of your camera field (FOV) and the type of lens used. Cameras like Nikon D3 or D700 have a full frame digital SLR camera, while Nikon D90 or Canon T2i (Rebel line from EOS Digital camera) has a smaller sensor. When fullframe digital SLR cameras are used with a fish eye lens such as Sigma 8mm F/3.5, a full circular image is captured. This lets you shoot 2 or 3 images per view to create 360 ​​X 360 stitched panoramic images. When used with a full-frame digital SLR camera such as the Nikon D90 or Canon Digital Rebel and similar camera, 4-snap is required with the camera in portrait position. The resulting image will have left and right sides cut out of each of 4 images and each of the four corners, creating a rounded image.
Video-based virtual tour
With the expansion of video on the internet, virtual video-based tours are gaining in popularity. The video camera is used to scroll and navigate the real subject. The benefit of this method is the constantly changing viewpoint across the pot. However, high quality video recording requires far more technical skills and equipment than taking digital still images. The video also removes the viewer's control of the tour. Therefore, this tour is the same for all audiences and subject chosen by videographer. Editing digital video requires capabilities with video editing software and has higher computer hardware requirements. Also, showing videos over the internet requires more bandwidth. Due to these difficulties, the task of making video-based tours is often left to professionals.
Recently different groups have been using Google systems to provide access to private areas, which were not previously available to the general public.
Custom software
Various software products can be used to create virtual tours.
Apps
Virtual tours are widely used for universities and the real estate and hospitality industries. Virtual tour can enable users to view the on-line environment. Today various industries are using the technology to help market their services and products. Over the past few years, the quality and accessibility of virtual tours has increased considerably, with some websites allowing users to navigate the tour by clicking on the map or the integrated floor plan.
Web-based or online
For most business purposes, virtual tours must be accessible from anywhere. The main solution is a web-based virtual tour. In addition, a rich and useful virtual tour is not just a series of panoramic images. A better experience can be gained by looking at various materials such as that obtained from video, text, and still images in interactive web content. There are many ways to collect data in mixed web content, such as using rich content creators (Java applets or Adobe Flash into two instances) or a Web content management system.
Flash-based tours are becoming very popular today. A study conducted by the PEW Research Group shows that over 5 million Americans watch virtual tours every day in 2004. PEW research data shows that Americans watching virtual tours increased from 54 million people in 2004 to 72 million in in August 2006, two-year increase of 18 million.
Thanks in part to the recent explosion of many Internet devices, such as Apple's iPad, iPhone and other tablet computing platforms powered by Google's Android 3 operating system like Motorola Xoom, it is predictable that the consumption of virtual tour content, through the use of Adobe Flash and virtual tour HTML5/CSS3 driven will only increase over time.
Real estate
Virtual tours are very popular in the real estate industry. Some types of such tours exist, including simple options such as interactive floor plans, and more sophisticated options such as full-service virtual tours. The interactive floor plan displays photos of the property with the help of floor plans and arrows to show where each photo is taken. Clicking the arrows indicates the user where the camera is located and which direction the camera is pointing to. Full-service virtual tours are typically created by professional photographers who will visit properties for sale, take multiple photos, and run them through stitching software. Matterport offers 3D camera services to create virtual tours. Full-service virtual tours are usually more expensive than interactive floor plans because of the cost of photographers, advanced equipment used, such as digital SLR cameras, and specialized software. Virtual real estate tours are usually linked to lists in Multiple Listing Services.
Historic Preservation
3D virtual tour technology is increasingly used in documentation and preservation of historic properties at risk of being damaged or experiencing limited public access. 3D virtual models using standard file formats, such as the Object_file (.obj) format, can be stored in digital archives for future academic research and exploration.
Hospitality
Virtual tours are also popular in the hospitality industry. Hotels are increasingly offering online tours on their websites, ranging from stitched 360 "photos to professionally produced video tours.These tours are typically offered by hotels in an effort to increase booking revenue by providing online viewers with immersive property views and amenities.
Virtual runs
The virtual running video is a picture of a documentary taken when the camera continues to move forward through an urban or natural area. The effect is to allow viewers to experience the sights they will see and the sound they hear is that they actually travel along certain routes at the same speed as the camera. Virtual walks based on real-world photography usually do not require the use of virtual reality goggles or headsets of the kind used by gamers.
Realistically simulate moving experience through space, virtual travel - or virtual or cycling trips - is different from conventional travel videos, which usually consist of the order of most static camera settings along a particular route or within a particular area. The advantage of conventional travel videos is that one or more narrators or on-screen guides can provide insights into the geographical, historical, political, military, cultural, geological, or architectural aspects of the area.
Virtual walks appeal to those who want to experience the sights and sounds of certain places in the country or the world, but who may not have the time or the financial or physical resources to actually travel there. They also appeal to users of treadmills or elliptical trainers, who walk or run while watching this video enhances the reality of the experience (and, at least, reduces boredom exercise).
Some feature-length narrative images have been using virtual walking techniques for dramatic purposes. This includes the opening sequences of Orson Welles' Touch of Evil and Robert Altman The Player , the famous tracking shot through Copacabana in Martin Scorcese Goodfellas Alexander Sokurov's Russian Ark (consisting of one minute 96 Steadicam taking), and, recently a long shot of Alfonso CuarÃÆ'³n tracking in Gravity , and almost the entire narrative structure of Alejandro Gonzá les IÃÆ' Â ± ÃÆ'¡rrito's Birdman .
See also
- Travel technology app
- VRML
- VR Photography
- campustours
- 3D Floor Plan
- 3D computer graphics software
- Google Expeditions
References
Source of the article : Wikipedia
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