华中科技大学学报（自然科学版）2013，Vol.41Issue(3)：6-10,5.
SIFT并行结构中的滤波器时分复用控制器
Time division controller for Gaussian filters in SIFT parallel architecture
摘要
Abstract
In order to reduce hardware cost for accelerating SIFT (scale invariant feature transformation) , difference of Gaussian (DoG) scale space was constructed by a set of Gaussian filters in time-division multiplexing way. The time-division multiplexing controller managed data flows of three octaves by assigning tokens. The octave with corresponding token had right to use the Gaussian filters. The algorithm of how to assign tokens with priority was also proposed. The proposed architecture was implemented on an Altera Stratix Ⅱ (EP2S60F672C3). Compared with the conventional architecture, the number of LUTs (look up table) was reduced by 40%. It only took 0. 83 ms to construct DoG scale space for a 320×240 image at 125 MHz.关键词
时分复用/数据流分析/尺度不变特征(SIFT)/并行结构/高斯滤波器/高斯差分尺度空间Key words
time division multiplexing/data flow analysis/scale invariant feature transformation (SIFT)/parallel architectures/Gaussian filter/difference of Gaussian scale space分类
信息技术与安全科学引用本文复制引用
张静,桑红石,沈绪榜..SIFT并行结构中的滤波器时分复用控制器[J].华中科技大学学报（自然科学版）,2013,41(3):6-10,5.基金项目
教育部支撑项目(625010107). （625010107）
