12-04-2012, 12:17 PM
i need a seminar report on skinput technology for my project.
12-04-2012, 12:17 PM
i need a seminar report on skinput technology for my project.
12-04-2012, 01:53 PM
i need a seminar report on skinput technology.
18-07-2012, 04:33 PM
SKINPUT
SKINPUT - Copy.docx (Size: 1.3 MB / Downloads: 144) ABSTRACT: Skinput is the emerging technology where the body acts as an interactive surface, in fact the Skin is interactive medium. Skinput appropriates the human body for acoustic transmission allowing the skin to be used as input surface. The recognition of the finger taps on the arm and hand is examined by the mechanical vibrations said transverse and longitudinal waves propagate through the body and are sensed by two arrays of 5 Cantilever Piezo sensors located in the armband. Skinput employs acoustics, which take advantage of the human body’s natural sound conductive properties. This Skinput provides an always available, naturally portable and on-body finger input system. This system is hierarchical, allowing the user to access a wide range of functionality possible. Skinput is poised to become the most efficient device where the user can simply tap on the desired function which will be projected by the Pico-projector with their fingers and perform a specific function. With the addition of a Pico-projector to the armband, Skinput allows users to interact with a graphical user interface displayed directly on the skin. Introduction: The present day computational devices are very small and are easier to carry them along with us but because of their limited sized screen leads to limited interaction space. So consequently diminishes the usage of the device. So if the device is provided with large interacting surface along with the respective functioning the device could become bulky and it looks awkward to carry all the time. Since one cannot simply make buttons and screens larger without losing the primary benefit of small size, one should consider alternative approaches that enhance interactions with mobile systems. . Bio-Acoustics: Whenever finger taps the skin two kinds of waves are generated, transverse and longitudinal waves along with the several distinct forms of acoustic energy are produced. Some energy is radiated into the air as sound waves; this energy is not captured by the Skinput system. Among the acoustic energy transmitted through the arm, the most readily visible are transverse waves, created by the displacement of the skin from a finger impact (Figure 3). When shot with a high-speed camera, these appear as ripples, which propagate outward from the point of contact. The amplitude of these ripples is correlated to both the tapping force and to the volume and compliance of soft tissues under the impact area. Sensing the Input There are several ways to sense the information through bone conduction microphones, conventional microphones coupled with stethoscopes, piezo contact microphones, and accelerometers. But these fail in several significant ways. These sensors give the flat response over the range of frequencies. However, because only a specific set of frequencies is conducted through the arm in response to tap input, a flat response curve leads to the capture of irrelevant frequencies and thus to a high signal-to-noise ratio. While bone conduction microphones might seem a suitable choice for Skinput, these devices are typically engineered for capturing human voice, and filter out energy below the range of human speech (whose lowest frequency is around 85Hz). Thus most sensors in this category were not especially sensitive to lower-frequency signals (e.g., 25Hz), which we found in our empirical pilot studies to be vital in characterizing finger taps. Conclusion: In this paper I had presented the approach to how skin can be used as an interactive surface with arrays of efficient cantilever piezo sensors and Pico-projector. Besides this it is explained how finger taps can be efficaciously identified. Results have shown that the system can be used well with the series of gestures even in the motion. It is concluded with description of several applications. |
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