When science fiction heroes communicate, they don‘t use landlines or cell phones. The caller simply appears in virtual form in the middle of the room; full sized and three dimensional. For researchers at Fraunhofer, this vision is already within reach: At the trade fairs IFA in Berlin (Hall 11.1, Booth 3) and IBC in Amsterdam (Hall 8, Booth 8.B80) they will show a new technology technology called “3D Human Body Reconstruction”.
Scientists at the Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI in Berlin have developed a method by which the realistic image of a person can be transmitted in a virtual world; and just like in science fiction movies, the image appears full sized and three dimensional. The image can be viewed from different directions and the viewer can even walk around it – just like in the movie. Until now, this was not possible; even virtual reality (VR) still has its limits. People can be represented by artificial three-dimensional models (so-called avatars) that can be seen when the viewer puts on VR data goggles. Nevertheless, these artificial figures do not have a lifelike appearance or natural movement. Another option is to play the video image of a person in frontal view in the VR data goggles. However, the viewer cannot walk around the image. As a result, the whole scene looks artificial as one moves through the virtual world. The person always turns his two-dimensional front to the viewer.
20 stereo cameras
In contrast, the HHI researchers have perfected the three-dimensional impression. To do so, they have developed a camera system that films the person. The core of this system is a stereo camera: Just as people do with their two eyes, the camera records the person with two lenses. This stereoscopic vision results in distances being estimated well, because both eyes look at an object from a slightly different angle. The result is a three-dimensional impression. Recording a person in detail from all directions takes more than one camera. “We are currently using more than 20 stereo cameras to map a human,” says Oliver Schreer, Head of the Research Group “Immersive Media & Communication” at HHI. Each camera only captures a part of the person. The challenge is to merge the individual camera images together so that a realistic overall picture is produced.
The system includes more than just the camera technology. The researchers have developed algorithms that can quickly extract depth information from the stereoscopic camera images. This is necessary in order to calculate the 3D form of a captured person. The computer calculates a virtual model of the human, which is then transferred into the virtual scene. The cameras perceive the surface shape with many details. In this way even small wrinkles, e.g. on the clothes of the person, can be shown. The model has a natural and realistic appearance.
“In developing these algorithms, special care has been taken to ensure they work efficiently and fast, so the movements of dialogue partners can very quickly be converted into a dynamic model,” Schreer says, since this is the only way that the movements will look natural. The images from a single camera pair can be processed in real time.
Showing every gesture
The fusing of the 3D information from the various camera images takes a few seconds. The illusion has already been perfected, though. The system transmits the three-dimensional dynamic model of a person rapidly in virtual reality. A person can move freely in a dedicated capture area. The virtual image portrays every gesture and movement realistically. “Our goal is that in the future a realistic image copy of a human is able to directly interact with the virtual world – for example, to let it grab virtual objects,” says Schreer.
In the future, the new camera system is planned to be used for other application fields too. For example, the researchers work on a virtual video conferencing application. It could as well be used for infotainment applications. Instead of a passive, frontal viewing experience, a television viewer could be directly involved in a movie scene by means of VR goggles. The viewer would not only see a three-dimensional image of the scene on the television, but could virtually walk around inside it, and, for example be a part of the adventures of his science fiction heroes.
An alternative to motion tracking
“We can also imagine installing the camera system at different locations in small studios,” says Schreer. “Film producers could use it to transfer the movement of actors into scenes more easily than ever before.” That has been very costly so far. In general, the actor’s movements are recorded using the motion tracking method. As part of this process, the face and body of the actor are marked with small dots. The computer tracks the movement of the points and transfers it to the computer-generated artificial image of the actor – for example, an action star jumping from skyscraper to skyscraper. However, with individual marker points, motion tracking methods can only detect movements and, especially, fine facial expressions very inaccurately or with very high technical effort. That means a lot of post processing for the computer-graphic artists until the scene looks more realistic. “With our camera system, however, our goal is to break down and represent a person and it’s movement in the future with much more details,” says Schreer.
The researchers are currently improving their camera system and the accompanying analysis software. Whether they will make both of these available as a service or license them out to production companies is not yet known.
Learn more: Beam me up to the video conference
The Latest on: 3D Human Body Reconstruction
[google_news title=”” keyword=”3D Human Body Reconstruction” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: 3D Human Body Reconstruction
- 3 Body Problem: Where the universe holds bareon April 26, 2024 at 10:00 pm
Netflix's adaptation of '3 Body Problem' turns Liu Cixin's science fiction trilogy into a visually stunning, intellectually provocative series that explores the limits of human knowledge and the compl ...
- Students in UNF's Anatomy in 3D class create detailed models of human organson April 26, 2024 at 12:57 pm
UNF teaching assistant Molly Dobrow lifts a miniature 3D printed lungs and heart created by the Anatomy in 3D class from a bath of sodium hydroxide.
- ‘Manhunt’: Tobias Menzies Explains That Double-Edged Finaleon April 19, 2024 at 10:44 am
Barricading himself in the room was the final scene Tobias Menzies filmed for the Apple TV+ limited series, which debuted its finale on Friday, April 19. The Emmy winner tells TV Insider that it was a ...
- AI in Ultrasound Imaging Market Size Expected to Reach USD 2,001.51 Mn by 2032on April 17, 2024 at 7:16 am
The global AI in ultrasound imaging market size is calculated at USD 1,030.69 million in 2024 and is expected to reach around USD 2,001.51 million by 2032, growing at a CAGR of 8.6% from 2023 to 2032.
- Council of Europe Office in Ukraineon April 17, 2024 at 6:12 am
A brand book, style, and fonts are currently being developed for the Makerspace’s identity. Workshops on 3D printing, a strategic session to develop the concept of the “city of the future”, and other ...
- FDA Approves Innovative 3D-Printed Cranial Implants for US Market Entryon April 16, 2024 at 11:10 pm
VSP® PEEK Cranial Implant is designed to address defects in the skull resulting from traumatic injuries like fractures or gunshot wounds.
- What Is Hamas Thinking Now?on April 6, 2024 at 9:29 am
HuffPost obtained rare interviews with Hamas leaders Mousa Abu Marzouk and Basem Naim, pressing them six months since Oct. 7 on the group's attacks on civilians and its vision for the future of Israel ...
via Bing News