360 VR - 360 VR Video - 360 Video Software -

There are few worse feelings than putting on a VR headset and having someone else's sweat drip down your face. That's why, if you're likely to be sharing your headset with others, we'd recommend some sort of cover. The company VR Cover does exactly what it suggests, selling covers for the Rift, Vive, Gear VR and Windows Mixed Reality headsets. You can get a couple of machine-washable covers or, if you prefer, some cheaper disposable ones.
Bees are, like, super important to how our ecologies work. You probably learned all of this in elementary school, but have you ever seen the process, from beginning to end? The National Honey Board wants to show you, in 360. You'll be a bee flying from flower to flower, then going back into the hive with the queen bee. After that, you'll take a look at how they get the honey out of the honeycombs and onto your table. Warning: Tons of buzzing.

Bees are, like, super important to how our ecologies work. You probably learned all of this in elementary school, but have you ever seen the process, from beginning to end? The National Honey Board wants to show you, in 360. You'll be a bee flying from flower to flower, then going back into the hive with the queen bee. After that, you'll take a look at how they get the honey out of the honeycombs and onto your table. Warning: Tons of buzzing.


Visuals are delivered via an OLED display that offers 1,440 x 1,660 resolution per eye. There's also a built-in speaker with the option to plug in headphones for a more isolated experience. While the VR experience might be on par with those PC-powered headsets, it's still very good and a big step up from the Oculus Go. Games run nice and smooth, though the smartphone-like processing power does mean some titles can take slightly long to load up. https://www.youtube.com/watch?v=1odROVjOISc&t=1s
Modern VR headsets now fit under one of three categories: Mobile, tethered, or standalone. Mobile headsets are shells with lenses into which you place your smartphone. The lenses separate the screen into two images for your eyes, turning your smartphone into a VR device. Mobile headsets like the Samsung Gear VR and the Google Daydream View are relatively inexpensive at around $100, and because all of the processing is done on your phone, you don't need to connect any wires to the headset. https://www.youtube.com/watch?v=nlkwYqVLIac&t=1s

However, because the Lighthouse sensors need good vantage points to track all your head and hand movements, it means mounting them up high. This makes setup for the Vive a bit convoluted compared to, say, the Rift or PSVR. For the Rift, you can just plop down the sensors on a desk, though to get the same 360 tracking you'll need to buy an extra sensor (the Touch bundle gets you two). However, when you get Lighthouse all ready the effect is next-level – enough to make using the PlayStation VR or Rift feel like a step back at times.


Morton Heilig wrote in the 1950s of an "Experience Theatre" that could encompass all the senses in an effective manner, thus drawing the viewer into the onscreen activity. He built a prototype of his vision dubbed the Sensorama in 1962, along with five short films to be displayed in it while engaging multiple senses (sight, sound, smell, and touch). Predating digital computing, the Sensorama was a mechanical device. Heilig also developed what he referred to as the "Telesphere Mask" (patented in 1960). The patent application described the device as "a telescopic television apparatus for individual use...The spectator is given a complete sensation of reality, i.e. moving three dimensional images which may be in colour, with 100% peripheral vision, binaural sound, scents and air breezes."[6] https://www.youtube.com/watch?v=pFSuajyJcwY&t=1s

This short film has been around for awhile but was recently recreated for VR by Arte Experience. After decades of steady sight deterioration, writer and theologian John Hull became totally blind. He began documenting his experiences on audio cassette which is how the film and this project were born. His original diary recordings form the basis of the six-part interactive non fiction project using gameplay mechanics and virtual reality to explore his emotional experience of blindness. It's an incredibly fascinating and moving experience that you can't miss. https://www.youtube.com/watch?v=ji12D_aObGw&t=1s
Virtual Reality is no longer a dream. It's here – in all its stunning, three-dimensional glory. Boasting powerful processing and lightning-fast graphics cards, our systems deliver breathtaking images and a virtual reality that's richly detailed incredibly lifelike. Best of all, our many of our VR gaming systems also give you the power work on files, surf the web, connect via social media and more – making them multi-functional devices that are designed for the way you live. Explore all of our VR systems, games and Xbox systems – and elevate your gaming experience. https://www.aliexpress.com/item/-/32901276676.html

Leap Motion has been around for a while but now it's got a new lease of life as a VR peripheral compatible with both the Rift and HTC Vive. It attaches with an add-on mounted to the front of the headset and adds hand gesture controls to your virtual reality gaming. It's super precise, tracking each finger – the question is, how precise are your dumb human hands? https://www.aliexpress.com/item/Insta360-ONE-4K-360-VR-Video-Action-Camera-Sport-Camera-24MP-Bullet-Time-6-Axis-Gyroscope/32842429079.html
Bees are, like, super important to how our ecologies work. You probably learned all of this in elementary school, but have you ever seen the process, from beginning to end? The National Honey Board wants to show you, in 360. You'll be a bee flying from flower to flower, then going back into the hive with the queen bee. After that, you'll take a look at how they get the honey out of the honeycombs and onto your table. Warning: Tons of buzzing.
It's not without issues though. We've already discussed VR exercise equipment as a promising concept let down by being such an expensive, bulky and sweaty process. But if you really want to "get in" the game, and you have space, hopping into an Omni could be pretty neat. We've tried it since its early days at CES and it's been able to stick it out through the years, improving the base, harness and shoes to ensure the best possible experience.
Virtual reality sickness (also known as cybersickness) occurs when a person's exposure to a virtual environment causes symptoms that are similar to motion sickness symptoms.[82] Women are significantly more affected than men by headset-induced symptoms, at rates of around 77% and 33% respectively.[83][84] The most common symptoms are general discomfort, headache, stomach awareness, nausea, vomiting, pallor, sweating, fatigue, drowsiness, disorientation, and apathy.[85] For example, Nintendo's Virtual Boy received much criticism for its negative physical effects, including "dizziness, nausea, and headaches".[86] These motion sickness symptoms are caused by a disconnect between what is being seen and what the rest of the body perceives. When the vestibular system, the body's internal balancing system, does not experience the motion that it expects from visual input through the eyes, the user may experience VR sickness. This can also happen if the VR system does not have a high enough frame rate, or if there is a lag between the body's movement and the onscreen visual reaction to it.[87] Because approximately 25–40% of people experience some kind of VR sickness when using VR machines, companies are actively looking for ways to reduce VR sickness.[88] https://www.youtube.com/watch?v=IwGfeMrPYmw&t=1s
One place Microsoft has succeeded in how easy it is to set up its WMR headsets. It uses inside-out tracking, so you won't need to go plug in a bunch of sensors to make sure your headset is being seen. These headsets have built-in cameras and sensors that handle all of that. They'll even track the Windows Mixed Reality controllers, which suffer a bit because they rely on the headset being able to see them clearly to properly track. https://www.aliexpress.com/item/Insta360-ONE-X-Sports-Action-Camera-5-7K-Video-VR-360-For-iPhone-and-Android/32944157625.html
Now I can start actually editing the timeline, put things to music, figure out transitions and where graphics will go. When I have a first cut of the timeline, I export sections at a time where motion graphics will be. Inside After Effects I can create a 3D camera using their “immersive” tools, convert all motion graphic to 3D layers and create the motion inside the immersive camera view. Viewing and editing on the flat, equirectangular format does little good to anyone. When motion graphics are done, I can export them and replace the original footage in the timeline with the newly exported motion graphic versions. https://www.aliexpress.com/item/Powkiddy-Retro-Handheld-Game-Console-Player-16GB-3-inch-Portable-Mini-Video-Gaming-Player-3000-Games/32967827816.html
No conversation about Mixed Reality HMDs is ever complete until someone brings up Apple. Yes, the company has no available or announced devices in this space — but there isn’t a soul following technology trends that doesn’t believe the Cupertino giant isn’t a) working on some kind of AR glasses, b) acquiring companies that make lenses and materials that are perfect for some kind of AR glasses, and c) talking about AR as a transformational technology every time a microphone appears. The rumor mill says Apple’s glasses could appear in 2019, but we have our money on a 2020 launch, alongside a newly redesigned and reimagined iPhone that moves away from the “iPhone X design” for the first time since it launched. Stay tuned. https://www.youtube.com/watch?v=tz8rHmosvbs&t=1s
This may seems like a lot of effort, and it is! What makes the development of virtual reality worthwhile? The potential entertainment value is clear. Immersive films and video games are good examples. The entertainment industry is after all a multi-billion dollar one and consumers are always keen on novelty. Virtual reality has many other, more serious, applications as well. https://www.youtube.com/watch?v=coKs3KnIcao&t=1s
No conversation about Mixed Reality HMDs is ever complete until someone brings up Apple. Yes, the company has no available or announced devices in this space — but there isn’t a soul following technology trends that doesn’t believe the Cupertino giant isn’t a) working on some kind of AR glasses, b) acquiring companies that make lenses and materials that are perfect for some kind of AR glasses, and c) talking about AR as a transformational technology every time a microphone appears. The rumor mill says Apple’s glasses could appear in 2019, but we have our money on a 2020 launch, alongside a newly redesigned and reimagined iPhone that moves away from the “iPhone X design” for the first time since it launched. Stay tuned. https://www.youtube.com/watch?v=vluoggq_3WU&t=1s

This may seems like a lot of effort, and it is! What makes the development of virtual reality worthwhile? The potential entertainment value is clear. Immersive films and video games are good examples. The entertainment industry is after all a multi-billion dollar one and consumers are always keen on novelty. Virtual reality has many other, more serious, applications as well. https://www.youtube.com/watch?v=pwJXDrBik4I&t=1s
A virtual environment should provide the appropriate responses – in real time- as the person explores their surroundings. The problems arise when there is a delay between the person’s actions and system response or latency which then disrupts their experience. The person becomes aware that they are in an artificial environment and adjusts their behaviour accordingly which results in a stilted, mechanical form of interaction. https://www.youtube.com/watch?v=d0yGdNEWdn0&t=1s
Modern virtual reality headset displays are based on technology developed for smartphones including: gyroscopes and motion sensors for tracking head, hand, and body positions; small HD screens for stereoscopic displays; and small, lightweight and fast computer processors. These components led to relative affordability for independent VR developers, and lead to the 2012 Oculus Rift Kickstarter offering the first independently developed VR headset.[39]

Expand your media adventures and social gaming communities with accessories and peripherals created for virtual reality. For example, a VR controller offers seamless integration with virtual reality games to give you more control over your virtual environment. Beyond PC gaming, virtual reality experiences also encompass other forms of video. Virtual reality-compatible cameras capable of filming in 360 degrees offer you the chance to view and edit your footage, along with other VR-ready components. https://www.youtube.com/watch?v=S3vO8E2e6G0&t=1s


No conversation about Mixed Reality HMDs is ever complete until someone brings up Apple. Yes, the company has no available or announced devices in this space — but there isn’t a soul following technology trends that doesn’t believe the Cupertino giant isn’t a) working on some kind of AR glasses, b) acquiring companies that make lenses and materials that are perfect for some kind of AR glasses, and c) talking about AR as a transformational technology every time a microphone appears. The rumor mill says Apple’s glasses could appear in 2019, but we have our money on a 2020 launch, alongside a newly redesigned and reimagined iPhone that moves away from the “iPhone X design” for the first time since it launched. Stay tuned. https://www.youtube.com/watch?v=tz8rHmosvbs&t=1s
Virtual Reality’s most immediately-recognizable component is the head-mounted display (HMD). Human beings are visual creatures, and display technology is often the single biggest difference between immersive Virtual Reality systems and traditional user interfaces. For instance, CAVE automatic virtual environments actively display virtual content onto room-sized screens. While they are fun for people in universities and big labs, consumer and industrial wearables are the wild west.
To create a feeling of immersion, special output devices are needed to display virtual worlds. Well-known formats include head-mounted displays or the CAVE. In order to convey a spatial impression, two images are generated and displayed from different perspectives (stereo projection). There are different technologies available to bring the respective image to the right eye. A distinction is made between active (e.g. shutter glasses) and passive technologies (e.g. polarizing filters or Infitec).[citation needed] https://www.youtube.com/watch?v=rrZuH2MtLcs&t=1s
Desktop-based virtual reality involves displaying a 3D virtual world on a regular desktop display without use of any specialized positional tracking equipment. Many modern first-person video games can be used as an example, using various triggers, responsive characters, and other such interactive devices to make the user feel as though they are in a virtual world. A common criticism of this form of immersion is that there is no sense of peripheral vision, limiting the user's ability to know what is happening around them. https://www.youtube.com/watch?v=jJ6a-pCgDH0&t=1s

The Vuzix Blade are the first Mixed Reality glasses to look like, well, glasses. A close cousin of the “Buddy Holly” style or those 3D spectacles you get at the movie theater, Vuzix Blade moves many core smartphone features from the touchscreen to in front of your face. Thing Uber ordering, GPS, fitness tracking, weather updates, messages, and more. Vuzix Blade is compatible with iOS and Android devices, and will set you back a cool $999. https://www.youtube.com/channel/UCyKa1YNZLio6XfjMR7fw45Q


Modern VR headsets now fit under one of three categories: Mobile, tethered, or standalone. Mobile headsets are shells with lenses into which you place your smartphone. The lenses separate the screen into two images for your eyes, turning your smartphone into a VR device. Mobile headsets like the Samsung Gear VR and the Google Daydream View are relatively inexpensive at around $100, and because all of the processing is done on your phone, you don't need to connect any wires to the headset. https://www.youtube.com/watch?v=EjW4N9qxZjk&t=1s
To a degree, I’ve made it sound harder than it actually is since software has compensated for much of this, but these were some of the questions I was asking when I was first learning. I then started learning that some standard editing procedures could still be done. For example, I can still create image masks in 360°. So in truth, I still stood behind the camera the whole time along with others and gear and then masked myself out with a separate cut of footage showing the empty room. And for the motion graphics, (I use Adobe software) the software has built-in accommodations for editing and viewing in the 3D space so as to create accurate graphics. So in truth, once I learned, it wasn’t that hard, but boy is it time-consuming. https://www.aliexpress.com/item/New-item-360-angle-LED-filament-chips-130ln-70v-1-3watt-for-LED-bulb-corn-light/2001947101.html
Now I can start actually editing the timeline, put things to music, figure out transitions and where graphics will go. When I have a first cut of the timeline, I export sections at a time where motion graphics will be. Inside After Effects I can create a 3D camera using their “immersive” tools, convert all motion graphic to 3D layers and create the motion inside the immersive camera view. Viewing and editing on the flat, equirectangular format does little good to anyone. When motion graphics are done, I can export them and replace the original footage in the timeline with the newly exported motion graphic versions. https://www.aliexpress.com/item/Powkiddy-Retro-Handheld-Game-Console-Player-16GB-3-inch-Portable-Mini-Video-Gaming-Player-3000-Games/32967827816.html
Google keeps taking stabs at Virtual Reality, but the company’s impact has thus far been limited. The lack of a big-time success hasn’t been for lack of trying. Google was there in the earliest days of this current VR cycle with Google Cardboard, a do-it-yourself approach to mobile VR that has become a staple of trade shows — Cardboard was even given out free to New York Times subscribers, bundled with their Sunday paper. Google famously stumbled with Google Glass (itself a Mixed Reality HMD, not VR — more on this below). But Google is not deterred! In 2018, the company launched its Daydream platform and Daydream View HMD.
Virtual Reality’s most immediately-recognizable component is the head-mounted display (HMD). Human beings are visual creatures, and display technology is often the single biggest difference between immersive Virtual Reality systems and traditional user interfaces. For instance, CAVE automatic virtual environments actively display virtual content onto room-sized screens. While they are fun for people in universities and big labs, consumer and industrial wearables are the wild west. https://www.youtube.com/watch?v=gc9H7UFzpPw&t=1s
Virtual Reality is a fascinating way to travel using nothing more than the power of technology. With a headset and motion tracking, VR lets you look around a virtual space as if you're actually there. It's also been a promising technology for decades that's never truly caught on. That's constantly changing with the current wave of VR products, especially as the biggest names in the industry are starting to really hone and tweak their headsets. https://www.youtube.com/watch?v=RdNqmKrRmbU&t=1s
Windows Mixed Reality is aimed at creating a more affordable version of high-end VR, and many of the headsets are built to run in two modes: one for PCs with dedicated graphics cards and one for PCs with integrated graphics. Many of these headsets start around $300, but at the top of the pile is the Samsung Odyssey. It has built-in spatial headphones from AKG, two 1400 X 1600 AMOLED displays, and a 110-degree field of view. https://www.youtube.com/watch?v=nORNftIHSAo&t=1s

The newest breed of mobile headsets can also be considered "tethered," because instead of inserting your phone into the headset itself, you physically connect your phone with a USB-C cable. Qualcomm has been emphasizing the VR and augmented reality capabilities of its Snapdragon 855 processor, and is promoting a new ecosystem of XR viewers (including both AR and VR devices). These use the aforementioned USB-C connection to run all processing from a smartphone, while keeping the display technology built separately into the VR headset or AR glasses.
In 2016, HTC shipped its first units of the HTC Vive SteamVR headset.[40] This marked the first major commercial release of sensor-based tracking, allowing for free movement of users within a defined space.[41] A patent filed by Sony in 2017 showed they were developing a similar location tracking technology to the Vive for PlayStation VR, with the potential for the development of a wireless headset.[42] https://www.aliexpress.com/item/VR-360-HD-Security-Camera-wireless-WIFI-panoramic-Home-Security-Surveillance-System-960P-IP-Camera-Panorama/32859898895.html

While audio-visual information is most easily replicated in Virtual Reality, active research and development efforts are still being conducted into the other senses. Tactile inputs such as omnidirectional treadmills allow users to feel as though they’re actually walking through a simulation, rather than sitting in a chair or on a couch. Haptic technologies, also known as kinesthetic or touch feedback tech, have progressed from simple spinning-weight “rumble” motors to futuristic ultrasound technology. It is now possible to hear and feel true-to-life sensations along with visual VR experiences. https://www.youtube.com/channel/UCLMLTE5R-LR26VKfnaDQtEA


Desktop-based virtual reality involves displaying a 3D virtual world on a regular desktop display without use of any specialized positional tracking equipment. Many modern first-person video games can be used as an example, using various triggers, responsive characters, and other such interactive devices to make the user feel as though they are in a virtual world. A common criticism of this form of immersion is that there is no sense of peripheral vision, limiting the user's ability to know what is happening around them.
The trade-off, besides the clunky cables, is the price. The least expensive tethered options are currently around $400. And that's before you address the processing issue; the Rift S and the Vive both need pretty powerful PCs to run, while the PS VR requires a PlayStation 4. If the cost isn't a deal breaker but the cables are, HTC offers a wireless adapter for the Vive, but it requires a desktop PC with a free PCIe slot to work. There are also third-party wireless adapters for the Rift, but we can't guarantee how well they work. https://www.aliexpress.com/item/1000-stickers-lot-38mm-diameter-handmade-Self-adhesive-kraft-paper-sealing-label-sticker-Item-No-TK26/32790505413.html

Virtual Reality is no longer a dream. It's here – in all its stunning, three-dimensional glory. Boasting powerful processing and lightning-fast graphics cards, our systems deliver breathtaking images and a virtual reality that's richly detailed incredibly lifelike. Best of all, our many of our VR gaming systems also give you the power work on files, surf the web, connect via social media and more – making them multi-functional devices that are designed for the way you live. Explore all of our VR systems, games and Xbox systems – and elevate your gaming experience.
Microsoft has been promoting its partnership with multiple headset manufacturers to produce a series of Windows 10-ready "mixed reality" headsets. The distinction between virtual reality and mixed reality is so far dubious, but it indicates an integration of augmented reality (AR) technology using cameras on the helmet. Acer, Dell, HP, Lenovo, and Samsung are some of Microsoft's partners in this mixed reality program. https://www.aliexpress.com/item/Car-Mobile-Phone-Holder-for-Iphone-6-Sumsung-Car-Air-Vent-Mount-Holder-USAMS-360-Degree/32604944534.html

The exact origins of virtual reality are disputed, partly because of how difficult it has been to formulate a definition for the concept of an alternative existence.[4] The development of perspective in Renaissance Europe created convincing depictions of spaces that did not exist, in what has been referred to as the "multiplying of artificial worlds".[5] Other elements of virtual reality appeared as early as the 1860s. Antonin Artaud took the view that illusion was not distinct from reality, advocating that spectators at a play should suspend disbelief and regard the drama on stage as reality.[2] The first references to the more modern concept of virtual reality came from science fiction. https://www.aliexpress.com/item/Xiaomi-Mijia-Panoramic-Camera-Mi-Sphere-360-Camera-Sports-Cam-Ambarella-A12-23-88MP-Camera-3/32836659846.html


After doing this over and over, revision after revision, eventually I have a final draft to export. In the export window, it is important that I ensure the “VR” is still enabled. What this does is put that specification in the metadata file so that sites like YouTube and Vimeo know to play it as 360° VR footage. Then I can upload it and ensure the playback is the way I want it. https://www.youtube.com/watch?v=ZVUfnJipFh0&t=1s
Currently standard virtual reality systems use either virtual reality headsets or multi-projected environments to generate realistic images, sounds and other sensations that simulate a user's physical presence in a virtual environment. A person using virtual reality equipment is able to look around the artificial world, move around in it, and interact with virtual features or items. The effect is commonly created by VR headsets consisting of a head-mounted display with a small screen in front of the eyes, but can also be created through specially designed rooms with multiple large screens. Virtual reality typically incorporates auditory and video feedback, but may also allow other types of sensory and force feedback through haptic technology.

There remains a significant amount of confusion about the differences between Virtual Reality, Augmented Reality and Mixed Reality. (Check out our exhaustive primers on Augmented Reality and Mixed Reality for an in-depth look at the differences.) The public seems to think that AR is a phone experience, while only VR requires an HMD. Mixed Reality devices like the Microsoft Hololens use a headset to overlay 3D imagery on top of the real world. Very cool, but not Virtual Reality. https://www.youtube.com/channel/UCYoKN0FOSrHo1qf4ZqlM2CA
The Oculus Rift was the first big name in the current wave of VR, and Oculus is still a major player. The Rift S has a higher resolution than the Vive (but not as high as the Vive Pro or, strangely, the Oculus Quest) and newer and lighter Oculus Touch motion controllers, and doesn't need external sensors to work. It does, however, need DisplayPort; if your PC only has an HDMI output, you might want to hunt for the previous Rift and deal with the extra cables.
There are few worse feelings than putting on a VR headset and having someone else's sweat drip down your face. That's why, if you're likely to be sharing your headset with others, we'd recommend some sort of cover. The company VR Cover does exactly what it suggests, selling covers for the Rift, Vive, Gear VR and Windows Mixed Reality headsets. You can get a couple of machine-washable covers or, if you prefer, some cheaper disposable ones. https://www.youtube.com/watch?v=wJB90G-tsgo&t=1s

The NBA has long been interested in virtual reality and 360 filmmaking, so it's no surprise that it would decide to take one of the most exciting events on All Star Weekend, the Dunk Contest, and turn it into a 360 video. In this case, you'll get to see all the dunks of winner Donovan Mitchell. Sit courtside as this mountain of a man charges to the hoop and seemingly defies the laws of physics. https://www.aliexpress.com/item/1PCS-Transmission-Solenoid-Valve-OEM-46313-3B030-463133B030-9360930002/32835810874.html

Special input devices are required for interaction with the virtual world. These include the 3D mouse, the wired glove, motion controllers, and optical tracking sensors. Controllers typically use optical tracking systems (primarily infrared cameras) for location and navigation, so that the user can move freely without wiring. Some input devices provide the user with force feedback to the hands or other parts of the body, so that the human being can orientate himself in the three-dimensional world through haptics and sensor technology as a further sensory sensation and carry out realistic simulations. Additional haptic feedback can be obtained from omnidirectional treadmills (with which walking in virtual space is controlled by real walking movements) and vibration gloves and suits.

No conversation about Mixed Reality HMDs is ever complete until someone brings up Apple. Yes, the company has no available or announced devices in this space — but there isn’t a soul following technology trends that doesn’t believe the Cupertino giant isn’t a) working on some kind of AR glasses, b) acquiring companies that make lenses and materials that are perfect for some kind of AR glasses, and c) talking about AR as a transformational technology every time a microphone appears. The rumor mill says Apple’s glasses could appear in 2019, but we have our money on a 2020 launch, alongside a newly redesigned and reimagined iPhone that moves away from the “iPhone X design” for the first time since it launched. Stay tuned. https://www.youtube.com/watch?v=vluoggq_3WU&t=1s

Will Greenwald has been covering consumer technology for a decade, and has served on the editorial staffs of CNET.com, Sound & Vision, and Maximum PC. His work and analysis has been seen in GamePro, Tested.com, Geek.com, and several other publications. He currently covers consumer electronics in the PC Labs as the in-house home entertainment expert... See Full Bio https://www.youtube.com/watch?v=R3uXVim4eTU&t=1s
×