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Fast SIFT Design for Real-Time Visual Feature Extraction

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4 Author(s)
Liang-Chi Chiu ; PixelArt Technol., Hsinchu, Taiwan ; Tian-Sheuan Chang ; Jiun-Yen Chen ; Chang, N.Y.-C.

Visual feature extraction with scale invariant feature transform (SIFT) is widely used for object recognition. However, its real-time implementation suffers from long latency, heavy computation, and high memory storage because of its frame level computation with iterated Gaussian blur operations. Thus, this paper proposes a layer parallel SIFT (LPSIFT) with integral image, and its parallel hardware design with an on-the-fly feature extraction flow for real-time application needs. Compared with the original SIFT algorithm, the proposed approach reduces the computational amount by 90% and memory usage by 95%. The final implementation uses 580-K gate count with 90-nm CMOS technology, and offers 6000 feature points/frame for VGA images at 30 frames/s and ~ 2000 feature points/frame for 1920 × 1080 images at 30 frames/s at the clock rate of 100 MHz.

Published in:

Image Processing, IEEE Transactions on  (Volume:22 ,  Issue: 8 )

Date of Publication:

Aug. 2013

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