Global ETD Search

11	Binary image features designed towards vision-based localization and environment mapping from micro aerial vehicle (MAV) captured images Cronje, Jaco 24 October 2012 (has links) M.Phil. / This work proposes a fast local image feature detector and descriptor that is im- plementable on a GPU. The BFROST feature detector is the first published GPU implementation of the popular FAST detector. A simple but novel method of feature orientation estimation which can be calculated in constant time is proposed. The robustness and reliability of the orientation estimation is validated against rotation invariant descriptors such as SIFT and SURF. Furthermore, the BFROST feature descriptor is robust to noise, scalable, rotation invariant, fast to compute in parallel and maintains low memory usage. It is demonstrated that BFROST is usable in real-time applications such as vision-based localization and mapping of images captured from micro aerial platforms. Binary image Micro aerial vehicle captured images Remote sensing - Data processing Micro air vehicles Mobile geographic information systems Imaging systems
12	Combined spatial diversity and time equalization for broadband multiple channel underwater acoustic communications Unknown Date (has links) High data rate acoustic communications become feasible with the use of communication systems that operate at high frequency. The high frequency acoustic transmission in shallow water endures severe distortion as a result of the extensive intersymbol interference and Doppler shift, caused by the time variable multipath nature of the channel. In this research a Single Input Multiple Output (SIMO) acoustic communication system is developed to improve the reliability of the high data rate communications at short range in the shallow water acoustic channel. The proposed SIMO communication system operates at very high frequency and combines spatial diversity and decision feedback equalizer in a multilevel adaptive configuration. The first configuration performs selective combining on the equalized signals from multiple receivers and generates quality feedback parameter for the next level of combining. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2015. / FAU Electronic Theses and Dissertations Collection Adaptive signal processing MIMO systems Mobile geographic information systems Signal processing -- Digital techniques Underwater acoustic telemetry Underwater acoustics -- Evaluation Wireless communication systems
13	Gobuddy - Android mobile application Nellaiappan, Kalaivani 01 January 2011 (has links) The purpose of this application is to serve the end user of an Android Smart phone, with reliable, instantaneous and location based information on places of interest such as restaurants, gas stations, hotels, movie theaters, and the like by using the phones' built-in GPS. The basic information includes viewing the map and address of the place of interest and getting the directions to a particular place in addition to having some extra features. Contains computer source code. Application software Development Mobile geographic information systems Global Positioning System Wireless communication systems GPS receivers Location-based services Mobile computing Smartphones Programming Application software Development Global Positioning System GPS receivers Location-based services Mobile computing Mobile geographic information systems Wireless communication systems. Software Engineering

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