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.
We present a method based on spatial and spectral (S2) imaging technique to measure the vector modal content of vortex fibers. Different vector modes can be told apart and their modal contents can be determined by implementing the S2 imaging process four times with four different polarizer directions. Moreover, the orbital angular momentum modes (OAMs) can be observed directly through the spiral phase...
Classically, face recognition depends on computing the similarity (or distance) between a pair of face images and/or their respective representations, where each subject is represented by one image. Template-based face recognition was introduced by the release of IARPA's Janus Benchmark-A (IJB-A) dataset, in which each enrolled subject is represented by a group of one or more images, called a template...
We present a fully trainable solution for binarization of degraded document images using extremely randomized trees. Unlike previous attempts that often use simple features, our method encodes all heuristics about whether or not a pixel is foreground text into a high-dimensional feature vector and learns a more complicated decision function. We introduce two novel features, the Logarithm Intensity...
Aim to let the intelligent robot could quick, accurately identify and locate tennis, a new method of tennis recognition is proposed in this paper based on color and shape. First, more independent goals image are removed through color filter method and image filter method with taking advantage of Matlab processing functions. Secondly, corner pixels were extracted to complete stereovision matching in...
To achieve the product green design, from the view point of disassembly after the product retirement, the article studies disassembly sequence of products and indexes related to disassembly process respectively and makes a comprehensive evaluation. And on the basis, it puts forward reasonable and feasible measures. Finally it combines examples to verify the methods.
In many circumstances, it is necessary for a node in a Wireless Sensor Network (WSN) to be aware of its location in the physical world. For example, tracking or event-detection functions are not useful if the WSN cannot provide any information where the event has happened. Some location procedures have been proposed in the IEEE 802.15.4a standard, including the time of arrival (TOA) estimation, the...
The statistical information, in general, can be visually presented in the three basic forms: statistical information in text (text for short), statistical graph, and statistical graph with text (i.e. the combination of graph and text). The impact of the different forms on people's understanding of the statistical information is still unclear. To address this issue, this study using eye-tracking investigated...
In this work, we present our implementation of the density functional theory (DFT) plane wave pseudopotential (PWP) calculations on GPU clusters. This GPU version is developed based on a CPU DFT-PWP code: PEtot, which can calculate up to a thousand atoms on thousands of processors. Our test indicates that the GPU version can have a ∼10 times speed-up over the CPU version. A detail analysis of the...
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.