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High Performance Stereo System for Dense 3-D Reconstruction

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3 Author(s)
Georgios-Tsampikos Michailidis ; University of Zürich, Zurich, Switzerland ; Renato Pajarola ; Ioannis Andreadis

3-D stereo reconstruction, a technique that estimates per-pixel depth in a scene, is still a challenging problem mainly due to some prohibitive factors that limit its performance and computational ability. The aim of this paper is to present a new hardware-efficient disparity map computation, which is based on disparity space image processing using discrete dynamic systems. The hardware architecture of the proposed system was implemented on a high-end field programmable gate array (FPGA) device, offering real-time 3-D reconstruction speeds using a hardware aware architecture based on parallelism and process pipelining. The proposed architecture fulfills the requirements of real-world applications regarding resource usage, frame rates, and disparity resolution, while its implementation on an Altera Stratix IV family FPGA device can extract disparity maps of up to 1280 × 1024 pixels with up to 128 disparity levels under real-time or near real-time conditions at a clock rate of 168 MHz. Qualitative and quantitative results also demonstrate its performance and improvement over previous hardware-related studies, making our approach a suitable candidate for applications in which timing and processing constraints are critical.

Published in:

IEEE Transactions on Circuits and Systems for Video Technology  (Volume:24 ,  Issue: 6 )