tailieunhanh - Lecture Human computer interaction: Lecture 29 - Professor Dr. Sajjad Mohsin

We need to know what a system does in order to assess its usability. n Standard software engineering formalisms can be used to specify an interactive system. Special interaction models are designed specifically to describe usability properties | Augmented Reality and Visualization Lecture 29 By Prof. Dr. Sajjad Mohsin Today we shall cover Augmented Reality History, Applications, Limitations, Future Visualization Definitions History Types Domains of Applications What is Augmented Reality? Augmented reality is a combination of a real life scene from a person, and a virtual scene from a computer that augments the scene with additional information Specifically, augmented reality superimposes audio, graphics and other virtual affects upon the surrounding environment. The Goal Augmented reality enhances one's perception. The real world is simply the foundation. The goal is to make a system that will be so efficient that the user will not be able to tell the difference between the real world and the virtual augmentation. Virtual vs. Augmented Virtual Reality is defined as, "a computer generated, interactive, three-dimensional environment in which a person is immersed.” In other words, virtual reality completely immerses the use in the virtual environment Augmented reality virtually changes the real world while allowing the user to keep a sense of presence about his surroundings Performance Criteria The mechanism that augments reality can be judged based on two things Update rate for generating the augmented image Accuracy of the registration of the real and virtual image So in order for AR to be perceived as “real,” the rate at which the system renders the image must be no fewer than 10 images a second. It also means that the system must be able to register its environment accurately enough so that a virtual change can be super imposed The Hardware In order for the AR system to work, certain hardware is needed, including: display, tracking, input devices, sensors and a processor. Currently, components such as a CPU, camera, display, accelerometer, GPS and solid state compass. Display One can perceive augmented reality in generally three different ways: Head mounted: the most immersive . | Augmented Reality and Visualization Lecture 29 By Prof. Dr. Sajjad Mohsin Today we shall cover Augmented Reality History, Applications, Limitations, Future Visualization Definitions History Types Domains of Applications What is Augmented Reality? Augmented reality is a combination of a real life scene from a person, and a virtual scene from a computer that augments the scene with additional information Specifically, augmented reality superimposes audio, graphics and other virtual affects upon the surrounding environment. The Goal Augmented reality enhances one's perception. The real world is simply the foundation. The goal is to make a system that will be so efficient that the user will not be able to tell the difference between the real world and the virtual augmentation. Virtual vs. Augmented Virtual Reality is defined as, "a computer generated, interactive, three-dimensional environment in which a person is immersed.” In other words, virtual reality completely immerses