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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 21 to 22 of 22 (0.034 seconds)| 21 |
Real-time Embedded Panoramic Imaging for Spherical Camera System / Real-time Embedded Panoramic Imaging for Spherical Camera SystemUddin-Al-Hasan, Main January 2013 (has links)
Panoramas or stitched images are used in topographical mapping, panoramic 3D reconstruction, deep space exploration image processing, medical image processing, multimedia broadcasting, system automation, photography and other numerous fields. Generating real-time panoramic images in small embedded computer is of particular importance being lighter, smaller and mobile imaging system. Moreover, this type of lightweight panoramic imaging system is used for different types of industrial or home inspection. A real-time handheld panorama imaging system is developed using embedded real-time Linux as software module and Gumstix Overo and PandaBoard ES as hardware module. The proposed algorithm takes 62.6602 milliseconds to generate a panorama frame from three images using a homography matrix. Hence, the proposed algorithm is capable of generating panorama video with 15.95909365 frames per second. However, the algorithm is capable to be much speedier with more optimal homography matrix. During the development, Ångström Linux and Ubuntu Linux are used as the operating system with Gumstix Overo and PandaBoard ES respectively. The real-time kernel patch is used to configure the non-real-time Linux distribution for real-time operation. The serial communication software tools C-Kermit, Minicom are used for terminal emulation between development computer and small embedded computer. The software framework of the system consist UVC driver, V4L/V4L2 API, OpenCV API, FFMPEG API, GStreamer, x264, Cmake, Make software packages. The software framework of the system also consist stitching algorithm that has been adopted from available stitching methods with necessary modification. Our proposed stitching process automatically finds out motion model of the Spherical camera system and saves the matrix in a look file. The extracted homography matrix is then read from look file and used to generate real-time panorama image. The developed system generates real-time 180° view panorama image from a spherical camera system. Beside, a test environment is also developed to experiment calibration and real-time stitching with different image parameters. It is able to take images with different resolutions as input and produce high quality real-time panorama image. The QT framework is used to develop a multifunctional standalone software that has functions for displaying real-time process algorithm performance in real-time through data visualization, camera system calibration and other stitching options. The software runs both in Linux and Windows. Moreover, the system has been also realized as a prototype to develop a chimney inspection system for a local company. / Main Uddin-Al-Hasan, E-mail: main.hasan@gmail.com
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IMPLEMENTING NETCONF AND YANG ON CUSTOM EMBEDDED SYSTEMSGeorges, Krister, Jahnstedt, Per January 2023 (has links)
Simple Network Management Protocol (SNMP) has been the traditional approach for configuring and monitoring network devices, but its limitations in security and automation have driven the exploration of alternative solutions. The Network Configuration Protocol (NETCONF) and Yet Another Next Generation (YANG) data modeling language significantly improve security and automation capabilities. This thesis aims to investigate the feasibility of implementing a NETCONF server on the Anybus CompactCom (ABCC) Industrial Internet of Things (IIoT) Security module, an embedded device with limited processing power and memory, running on a custom operating system, and using open source projects with MbedTLS as the cryptographic primitive library. The project will assess implementing a YANG model to describe the ABCC’s configurable interface, connecting with a NETCONF client to exchange capabilities, monitoring specific attributes or interfaces on the device, and invoking remote procedure call (RPC) commands to configure the ABCC settings. The goal is to provide a proof of concept and contribute to the growing trend of adopting NETCONF and YANG in the industry, particularly for the Industrial Internet of Things (IIoT) platform of Hardware Meets Software (HMS).
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