Essay examples --

When considering the numerous types of interactions between humans and computers that occur on a daily basis, from simple data entry and clerical work to high level programming and graphic design, they all require people to physically input information into the machine and receive some sort of visual or audio output. This, in fact is the primary goal when referring to input and output devices; to transfer information from a person’s mind into the computer and to then have the computer relay the results of said input. The difficulty in the transferring of information from the human brain into a computer lies essentially within the input device. The majority of input devices which are commonly in use today are simply not substantial enough to allow users to convey information to a computer at a sufficient rate. This problem has lead to the exploration and development of numerous new input devices. This paper will speak to these new input devices and how they, along with their corresponding output device, will allow the average computer user to decrease the latency between the human mind and the computer. With current technologies employed by the average computer user, the most common method for transmitting information from a human into a computer is through two simple devices, the keyboard and the mouse. These specific input methods, while convenient and nearly universal, are limited by the speed at which a human can operate them with their hands. To use typing as an example, it is reasonable to assume that anyone who works in the field of computer science or any of the various related industries knows how to use a keyboard to enter text into a computer. However this method of information transfer has its upper limits. Assumi... ...ices still suffer from the same limitations as the keyboard, namely that they are both limited by the speed and dexterity of the human hands. The computer mouse operates in a two dimensional world, generally manipulating two dimensional data such as text editors, internet browsers, and email applications. Nonetheless, there is a large portion of the computer industry which operates with various three dimensional applications. It is with these types of applications that gestural interaction becomes of greater value. Once such method of interaction that has received considerable attention in recent years is 3D spatial interaction where users’ motions are tracked in some way so as to determine their 3D pose (e.g., position and orientation) in space over time. This tracking can be done with sensors users wear or hold in their hands or unobtrusively with a camera.