Journal of Real-Time Image Processing

, Volume 14, Issue 2, pp 267–277 | Cite as

A real-time implementation of SIFT using GPU

  • K. Aniruddha Acharya
  • R. Venkatesh BabuEmail author
  • Sathish S. Vadhiyar
Original Research Paper


Scale-Invariant Feature Transform (SIFT) is one of the widely used interest point features. It has been successfully applied in various computer vision algorithms like object detection, object tracking, robotic mapping and large-scale image retrieval. Although SIFT descriptors are highly robust towards scale and rotation variations, the high computational complexity of the SIFT algorithm inhibits its use in applications demanding real-time response, and in algorithms dealing with very large-scale databases. This paper presents a parallel implementation of SIFT on a GPU, where we obtain a speed of around 55 fps for a 640 × 480 image. One of the main contributions of our work is the novel combined kernel optimization that has led to a significant improvement of 12.2 % in the execution speed. We compare our results with the existing SIFT implementations in the literature, and find that our implementation has better speedup than most of them.


SIFT GPU CUDA Combined kernel 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • K. Aniruddha Acharya
    • 1
  • R. Venkatesh Babu
    • 1
    Email author
  • Sathish S. Vadhiyar
    • 2
  1. 1.Video Analytics Laboratory, Supercomputer Education and Research CentreIndian Institute of ScienceBangaloreIndia
  2. 2.Supercomputer Education and Research CentreIndian Institute of ScienceBangaloreIndia

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