Accelerating CDVS extraction on mobile platform

摘要

The extraction of MPEG-7 Compact Descriptors for Visual Search (CDVS) on most popular mobile devices is slow, which is attributed to the complexity of the algorithm and the limited computing power of the mobile platform. A feasible and straightforward way to accelerate the extraction is to excavate the potential computing power of modern mobile microprocessor. In this paper, we implement a NEON SIMD based data level parallelism and Pthread based multi-thread parallelism scheme to accelerate the CDVS extracting process on a multi-core ARM processor. Experimental results show a speed-up of 3.5x on Gaussian convolution, and 2.3x on the whole extracting process with the proposed method.