The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Arbitrary fractional order integrator can be designed by a method of constructing the rational approximation function in the form of continued product. This paper takes half order integrator as an example to exhibit the design process. The circuit is made up of level-N active operational amplifier network in which the size of N is equal to the order of rational function. Since the rational approximation...
For iris recognition, it is inevitable to encounter a large portion of off-angle iris images in less constrained conditions. This paper proposes a feature-level solution to offangle iris recognition which is less dependent on iris image preprocessing. Firstly, we use geometric features of corneal reflections and multiclass SVM to classify iris images into five categories (i.e., frontal, right, left,...
The iris recognition performance is partially dependent on the relative quality variations of pairwise iris images. So bridging the gap between the quality and the matching score of pairwise iris images is helpful to predict and improve iris recognition performance. This paper formulates the relationship between matching score and quality of pairwise iris images as a statistical regression problem...
Iris image quality critically determines iris recognition performance and the quality metrics of iris images are also useful prior information for adaptive selection of optimal recognition strategy. Iris image quality is jointly determined by multiple factors such as focus, occlusion, off-angle, deformation, etc. So it is a complex problem to assess the overall quality score of an iris image. This...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.