Gesture recognition through angle space

As the notion of ubiquitous computing becomes a reality, the keyboard and mouse paradigm become less satisfactory as an input modality. The ability to interpret gestures can open another dimension in the user interface technology. In this paper, we present a novel approach for dynamic hand gesture modeling using neural networks. The results show high accuracy in detecting single and multiple gestures, which makes this a promising approach for gesture recognition from continuous input with undetermined boundaries. This method is independent of the input device and can be applied as a general back-end processor for gesture recognition systems

A color hand gesture database for evaluating and improving algorithms on hand gesture and posture recognition

With the increase of research activities in vision-based hand posture and gesture recognition, new methods and algorithms are being developed. Although less attention is being paid to developing a standard platform for this purpose. Developing a database of hand gesture images is a necessary first step for standardizing the research on hand gesture recognition. For this purpose, we have developed an image database of hand posture and gesture images. The database contains hand images in different lighting conditions and collected using a digital camera. Details of the automatic segmentation and clipping of the hands are also discussed in this paper

Has The Business Cycle Been Dampened? The Case Of Canada, Sweden And The United States

Have postwar stabilization policies reduced economic fluctuations compared to earlier periods? Using output data for Canada, Sweden and the United States for the period 1929-2005 and three different de-trending procedures, we found that postwar economic policies have been successful in reducing business cycle volatility. We also found that fluctuations in real output have been significantly dampened during the post-Bretton Woods era compared to earlier periods

Okuns Law Revisited: Evidence From OECD Countries

Okuns law is one of the most enduring stylistic facts in macroeconomics. The inverse relationship between the unemployment rate and the growth rate of real output, known as Okuns law, has important implications for macroeconomic policy, particularly in determining the optimal and desirable growth rate of output. This paper examines this relationship within an error correction modelling framework which tests the relationship as a long-run relationship while allowing short-run deviations from long-run equilibrium to take place. Using quarterly data for 13 OECD countries covering the period from 1988.I to 2007:IV, we find overwhelming support for Okuns law