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191 results on '"Ahmadinia, Ali"'

2. Construction of trail networks based on growing self-organizing maps and public GPS data.

Author

Macshane, Jared and Ahmadinia, Ali

Subjects
*GLOBAL Positioning System, *TRAILS, *SELF-organizing maps, *HIKERS
Abstract

Manual creation of trail maps for hikers is time-consuming and can be inaccurate. This paper presents a new method to construct trail networks based on a growing self-organizing map (GSOM) using publicly available Global Positioning System (GPS) data. Unlike other network topology construction techniques, this approach is not dependent on sequential GPS traces. Fine-tuning multiple hyperparameters enables to customize this process based on unique features of datasets and networks. The generated maps, which are trained on public GPS data, are compared to a ground truth from Open Street Map (OSM). The performance evaluation is based on the accuracy, completeness, and topological correctness of the trail maps. The proposed approach outperforms, particularly on sparse networks without significant GPS noise. [ABSTRACT FROM AUTHOR]

Published
2024
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6. DyNoC: A Dynamic Infrastructure for Communication in Dynamically Reconfigurable Devices

Author

Bobda, Christophe, Ahmadinia, Ali, Majer, Mateusz, Teich, Juergen, Fekete, Sandor P., and van der Veen, Jan

Subjects
Computer Science - Hardware Architecture, B.7, C.5, C.3
Abstract

A new paradigm to support the communication among modules dynamically placed on a reconfigurable device at run-time is presented. Based on the network on chip (NoC) infrastructure, we developed a dynamic communication infrastructure as well as routing methodologies capable to handle routing in a NoC with obstacles created by dynamically placed components. We prove the unrestricted reachability of components and pins, the deadlock-freeness and we finally show the feasibility of our approach by means on real life example applications., Comment: 9 pages, 7 figures, 1 table, Latex, to appear in 15th International Conference on Field-Programmable Logic and Application

Published
2005

7. Defragmenting the Module Layout of a Partially Reconfigurable Device

Author

van der Veen, Jan, Fekete, Sandor P., Ahmadinia, Ali, Bobda, Christophe, Hannig, Frank, and Teich, Juergen

Subjects
Computer Science - Hardware Architecture, Computer Science - Data Structures and Algorithms, B.7, C.5, C.3
Abstract

Modern generations of field-programmable gate arrays (FPGAs) allow for partial reconfiguration. In an online context, where the sequence of modules to be loaded on the FPGA is unknown beforehand, repeated insertion and deletion of modules leads to progressive fragmentation of the available space, making defragmentation an important issue. We address this problem by propose an online and an offline component for the defragmentation of the available space. We consider defragmenting the module layout on a reconfigurable device. This corresponds to solving a two-dimensional strip packing problem. Problems of this type are NP-hard in the strong sense, and previous algorithmic results are rather limited. Based on a graph-theoretic characterization of feasible packings, we develop a method that can solve two-dimensional defragmentation instances of practical size to optimality. Our approach is validated for a set of benchmark instances., Comment: 10 pages, 11 figures, 1 table, Latex, to appear in "Engineering of Reconfigurable Systems and Algorithms" as a "Distinguished Paper"

Published
2005

8. A Practical Approach for Circuit Routing on Dynamic Reconfigurable Devices

Author

Ahmadinia, Ali, Bobda, Christophe, Ding, Ji, Majer, Mateusz, Teich, Juergen, Fekete, Sandor P., and van der Veen, Jan

Subjects
Computer Science - Hardware Architecture, B.7, C.5, C.3
Abstract

Management of communication by on-line routing in new FPGAs with a large amount of logic resources and partial reconfigurability is a new challenging problem. A Network-on-Chip (NoC) typically uses packet routing mechanism, which has often unsafe data transfers, and network interface overhead. In this paper, circuit routing for such dynamic NoCs is investigated, and a practical 1-dimensional network with an efficient routing algorithm is proposed and implemented. Also, this concept has been extended to the 2-dimensional case. The implementation results show the low area overhead and high performance of this network., Comment: 7 pages, 7 figures, 2 tables, Latex, to appear in International Workshop on Rapid System Prototyping (RSP 2005)

Published
2005

10. Optimal Free-Space Management and Routing-Conscious Dynamic Placement for Reconfigurable Devices

Author

Ahmadinia, Ali, Bobda, Christophe, Fekete, Sandor, Teich, Juergen, and van der Veen, Jan

Subjects
Computer Science - Data Structures and Algorithms, Computer Science - Computational Geometry, C.1.3, F.2.2
Abstract

We describe algorithmic results for two crucial aspects of allocating resources on computational hardware devices with partial reconfigurability. By using methods from the field of computational geometry, we derive a method that allows correct maintainance of free and occupied space of a set of n rectangular modules in optimal time Theta(n log n); previous approaches needed a time of O(n^2) for correct results and O(n) for heuristic results. We also show that finding an optimal feasible communication-conscious placement (which minimizes the total weighted Manhattan distance between the new module and existing demand points) can be computed in Theta(n log n). Both resulting algorithms are practically easy to implement and show convincing experimental behavior., Comment: 18 pages, 8 figures, 1, table; previous 5-page extended abstract appears in "International Conference on Field-Programmable Logic and Applications", 2004. New version is final journal version, to appear in IEEE Transactions on Computers

Published
2004
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17. Dynamic Reconfiguration in JPEG2000 Hardware Architecture

Author

Ahmadinia, Ali, Fernandez-Canque, Hernando, Ramirez-Iniguez, Roberto, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, König, Andreas, editor, Dengel, Andreas, editor, Hinkelmann, Knut, editor, Kise, Koichi, editor, Howlett, Robert J., editor, and Jain, Lakhmi C., editor

Published
2011
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18. DTIRC Based Optical Collimators

Author

Ramirez-Iniguez, Roberto, Ahmadinia, Ali, Fernandez-Canque, Hernando, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, König, Andreas, editor, Dengel, Andreas, editor, Hinkelmann, Knut, editor, Kise, Koichi, editor, Howlett, Robert J., editor, and Jain, Lakhmi C., editor

Published
2011
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19. Machine Vision Applied to Highly Variable Objects

Author

Fernandez-Canque, Hernando, Hintea, Sorin, Ramirez-Iniguez, Roberto, Ahmadinia, Ali, Csipkes, G., Csipkes, D., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, König, Andreas, editor, Dengel, Andreas, editor, Hinkelmann, Knut, editor, Kise, Koichi, editor, Howlett, Robert J., editor, and Jain, Lakhmi C., editor

Published
2011
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21. Optimization of Reconfigurable Multi-core SOCs for Multi-standard Applications

Author

Ahmadinia, Ali, Arslan, Tughrul, Fernandez Canque, Hernando, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Velásquez, Juan D., editor, Ríos, Sebastián A., editor, Howlett, Robert J., editor, and Jain, Lakhmi C., editor

Published
2009
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22. Machine Vision Application to Automatic Intruder Detection Using CCTV

Author

Fernandez-Canque, Hernando, Hintea, Sorin, Freer, John, Ahmadinia, Ali, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Velásquez, Juan D., editor, Ríos, Sebastián A., editor, Howlett, Robert J., editor, and Jain, Lakhmi C., editor

Published
2009
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24. A Dynamic NoC Approach for Communication in Reconfigurable Devices

Author

Bobda, Christophe, Majer, Mateusz, Koch, Dirk, Ahmadinia, Ali, Teich, Jürgen, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Becker, Jürgen, editor, Platzner, Marco, editor, and Vernalde, Serge, editor

Published
2004
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25. Optimal Routing-Conscious Dynamic Placement for Reconfigurable Devices

Author

Ahmadinia, Ali, Bobda, Christophe, Fekete, Sándor P., Teich, Jürgen, van der Veen, Jan C., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Becker, Jürgen, editor, Platzner, Marco, editor, and Vernalde, Serge, editor

Published
2004
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34. Optimal free-space management and routing-conscious dynamic placement for reconfiguration devices

Author

Ahmadinia, Ali, Bobda, Christophe, Fekete, Sandor P., Teich, Jurgen, and van der Veen, Jan C.

Subjects
Programmable logic array, Storage capacity, Digital integrated circuits -- Design and construction, Memory compaction -- Methods, Memory management -- Methods, Memory mapping -- Methods, Memory partitioning -- Methods, Memory protection -- Methods, Memory refresh (Computers) -- Methods
Published
2007

39. An embedded intelligence engine for driver drowsiness detection.

Author

Vadlamudi, Shirisha and Ahmadinia, Ali

Subjects
*MOTOR vehicles, *DROWSINESS, *ARTIFICIAL intelligence, *TRAFFIC accidents, *PROTOTYPES
Abstract

Motor vehicle crashes involving drowsy driving are huge in number all over the world. Many studies revealed that 10%–30% of crashes are due to drowsy driving. Fatigue has costly effects on the safety, health, and quality of life. This drowsiness of drivers can be detected using various methods, for example, algorithms based on behavioural gestures, physiological signals and vitals. Also, few of them are vehicle based. Drowsiness of drivers was detected based on steering wheel movement and lane change patterns. A pattern is derived based on slow drifting and fast corrective steering movement. A prototype that detects the drowsiness of an automobile driver using artificial intelligence techniques, precisely using open‐source tools like TensorFlow Lite on a Raspberry Pi development board, is developed. The TensorFlow model is trained on images captured from the video with the help of object detection using cascade classifier. In order to have a better accuracy, an Inception v3 architecture is used in pre‐training the model with the image dataset. The final model is created and trained using long short‐term memory and then the final TensorFlow model is converted to TensorFlow Lite model and this Lite model is used on Raspberry Pi board to detect the drowsiness of drivers. The results are comparable with desktop‐based results in the literature. [ABSTRACT FROM AUTHOR]

Published
2022
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49. Optimization Algorithms for Dynamic Reconfigurable Embedded Systems

Author

Ahmadinia, Ali, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Becker, Jürgen, editor, Platzner, Marco, editor, and Vernalde, Serge, editor

Published
2004
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