Fast motion capture in 3D animation, an overview of fast iteration and ready-to-use animation files
An enterprising animated character has to be vivid first. However, making virtual characters come to life is not easy. Motion capture technology makes 3D animation by recording and digitally reproducing human motion. In the Lord of the Rings series, Andy Serkis played the role of Gollum through the motion capture technology. However, the traditional motion capture technology requires a lot of expensive and cumbersome hardware to complete. At the same time, when performing motion capture, it also requires specialized personnel who are skilled in operating multi-camera settings, a specific studio environment, and special sensor equipment worn by actors. "The cost, skill requirements and time cost of traditional motion capture technology are prohibitive," said Gavan Gravesen, co-founder and CEO of RADiCAL. RADiCAL is based in New York and is part of NVIDIA's initial acceleration program. As represented by its company name "RADiCAL", the company is positioned to break through the shackles of traditional technology. "We are committed to achieving universal availability, seamless integration, and speed of operation at low cost," said Gavan Gravesen. Game developers, 3D graphic artists, producers, and AR/VR enthusiasts can use RADiCAL's NVIDIA GPU-based AI solution for 3D motion capture without the need for additional hardware or studios with a 2D camera or even a mobile phone camera. Room environment or precision sensor equipment, and significantly reduce the production costs and workload. Fast motion capture Users around the world can upload videos directly to the RADiCAL cloud via smartphones or the web. RADiCAL uses AI and motion science to process video, detect motion patterns, and reproduce human motion in 3D space, and can even reconstruct what the camera is not shooting. The algorithm of RADiCAL solution can be automatically adjusted according to different body proportions and human movements. It can also create models to copy movements in three-dimensional space. Although the fluency in the model makes the production process seem simple, it is not. "We need to integrate deep learning, robotics, computer vision, and biomechanics, and this requires a powerful AI development environment," said Anna-Chiara Bellini, co-founder and chief technology officer of RADiCAL. NVIDIA GPU computing has played an important role in achieving this goal. Implement rapid iteration Bellini said that how to deal with massive data is the primary challenge faced by RADiCAL in the development of AI. In order to develop an algorithm, a single still image needs to analyze up to 6 GB of data. Each second of motion contains 120 frames and requires 720 GB of data to be created. Bellini and his team chose to use TensorFlow to integrate GPU programming into their research process so that they can obtain a "single execution model" that applies to the entire pipeline. "Using specialized kernel-enhanced TensorFlow written in CUDA, simple kernels written in just a few hours can save days when performing simulations," she said. To support the motion model, RADiCAL uses multi-frame processing in a multi-card interconnect system. "The latest NVIDIA NVLink capable of paralleling multiple Tesla V100 GPUs makes this possible," Bellini said. With the help of cloud-based GPU parallel devices, the development cycle (including conception, deployment, and production) of Bellini and his team has been reduced by a factor of ten. She said: "With NVIDIA GPUs, we can accelerate work, explore more options, and use machine learning engineers' time more efficiently." Ready to use animation files After the video is processed, RADiCAL can present real-time 3D previews and live video clips side by side through its website and MOTiON application. Users can also download animation files of their works in a format that can be used for 3D animation, augmented reality, VR, game engines, and other 3D graphics programs and content channels. Recently, RADiCAL has introduced a public beta program to early adopters of the creative industry. The company plans to fully launch the market in a few weeks. NVIDIA's startup acceleration program has nearly 2800 startups, and RADiCAL is one of them. The Startup Acceleration Program provides start-ups with technology, expertise, and marketing support to help them accelerate their development.
Antenk DVI Series Digital Video Interface connectors are the standard digital interface for flat panels, video graphics cards, monitors and HDTV units. This series includes DVI-D (Digital), DVI-A (Analog) and DVI-I (Integrated Digital/Audio). Their unique crossing ground blades provide high speed performance at low cost. They are available in Straight or Right Angle PCB mount receptacles and mating male cable connectors. They support a data transfer rate of 4.95Gbps with a dielectric withstanding voltage of 500VAC. Each version features our specially designed contacts which improve signal performance and a zinc alloy shield that reduces electromagnetic interference (EMI).
Digital Visual Interface Cable Connectors
DVI ConnectorWith the advent of technologies such as DVD players, high-definition televisions, and even digital cable, the need for more advanced cables and connectors has increased. Digital Visual Interface (DVI) is one response to the growing need for interconnected systems, enabling digital systems to be connected to an array of displays. Yet DVI cables and connectors can also be complicated, and may lead to confusion between High Definition Multimedia Interface (HDMI) and DVI. Although the two systems have much in common, they service different niches of digital technology.
Digital Visual Interface
Older systems aren`t necessarily outdated systems. Although DVI preceded HDMI, it`s still widely used in both business and domestic settings. DVI connectors are designed to handle digital data transmission, incorporating three transmission channels in every connector link. The maximum bandwidth for data transfer is 165 megahertz, which is enough to relay up to 165 million pixels per second. Data is encoded for effective transfer, but a single link can handle around 4.95 gigabits per second of information. Double links can handle twice that amount.
Because a DVI cable carries information over a 165 megahertz bandwidth, complete digital resolution can be obtained. Using double link connectors increases the speed of transmission, but requires another cable. However, not many devices depend solely on a double link DVI, so this technolgy can be used on an as-desired basis.
Types of DVI Connectors
There are three general categories of DVI cable connectors: DVI-Digital (DVI-D), DVI-Integrated (DVI-I), and DVI-Analog (DVI-A). However, most connectors fall into one of the first two groups.
A standard DVI connector is 37 mm wide and has 24 pins, 12 of which are used for a single link connection. When analog is involved, four additional pins are needed to support the additional lines of an analog signal. It is not possible to cross from a digital source to an analog display or vice versa. In those instances, an integrated connector is probably the best option. There are five common types of DVI connectors.
DVI-I Single Link
This kind of connector has three rows, each with six pins. There are two contacts. Because the connector is integrated, it can be used with both analog and digital applications.
DVI-I Dual Link
A DVI-I dual link connector can also be used with both digital and analog applications, but is configured with more pins to accommodate a dual connection. There are three rows with eight pins each, as well as two contacts.
DVI-D Single Link
Specifically designed for digital applications, a DVI-D single link connector has three rows of six pins, and looks much like a DVI-I single link connector. However, a DVI-D connector has no contacts.
DVI-D Dual Link
Also made specifically for digital applications, a DVI-D dual link features more pins (three rows of eight) for dual connections. Like a DVI-D single link, a DVI-D dual link connector has no contacts.
DVI-A
This particular type of connector can only be used for analog applications, and has three rows of pins. One row has five pins, one has four pins, and the last row has three pins. Like single link connectors, a DVI-A link connector has two contacts.
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