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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Safari, S. Fijany, A. Diotalevi, F. Hosseini, F. |
| Copyright Year | 2012 |
| Description | Author affiliation: School of Electrical and Computer Engineering, University of Tehran, Iran (Safari, S.) || Italian Institute of Technology, Via Morego 30, 16163, Genova, Italy (Fijany, A.; Diotalevi, F.; Hosseini, F.) |
| Abstract | In this paper we present a fast, and for some cases faster than real-time, implementation of a class of dense stereo vision algorithms including the sum of squared differences (SSD), SSD with left-right check, and SSD with multiple windows, on a low-power MIMD many-core architecture, Tilera. Stereo vision — a method to extract spatial depth information of a scene from two pairs of stereo images — is performed as a primary task and first step in many computer vision applications, e.g. 3D modeling and obstacle detection/avoidance in autonomous vehicles. To reduce the scene conditions in real environment and achieve a robust error rejection, intensive computation for implementing a multiple window with left-right checking scheme is required. Therefore, real-time implementation of these algorithms is a challenging problem, particularly in an embedded application. To the best of our knowledge, our results present the first implementation of any stereo vision algorithm on new emerging MIMD many-core architectures. We have achieved a faster than real-time performance of 207, 118, and 30.45 frames per second for VGA (640×480) images with a disparity range of 16 for standard SSD, SSD with left-right checking, and SSD with 5 multiple window implementations, respectively. For HDTV (1280×720) images, we have achieved rather unique results of 71, and 35.75 frames per second for standard SSD and SSD with left-right checking implementations, respectively. Such excellent performance along with the low power consumption of the Tilera architecture (less than 23W) makes it an excellent candidate to achieve a supercomputing level capability for mobile computer vision applications. Experimental results also clearly demonstrate that the new many-core MIMD parallel architectures can indeed achieve excellent performance in low-level image processing computations while providing a high degree of flexibility and programmability. |
| Starting Page | 1 |
| Ending Page | 11 |
| File Size | 754286 |
| Page Count | 11 |
| File Format | |
| ISBN | 9781457705564 |
| ISSN | 1095323X |
| e-ISBN | 9781457705571 |
| DOI | 10.1109/AERO.2012.6187228 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-03-03 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Computer architecture Stereo vision Algorithm design and analysis Tiles Real time systems Computational efficiency Engines |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aerospace Engineering Space and Planetary Science |
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