[1] Zhejiang University of Technology. A navigation system for a shopping cart,China:201220437852.3 [P]. 2013.03.20.
[2] LIU Bing,LIU Xiaopeng,ZENG Xiangliang. Barcode recognition technology based smart shopping cart design [J]. Forest Engineering,2012,28(6):32-35.
[3] SUN Kewei,LI Jianhai. Smart Supermarket Shopping AVR microcontroller based system design [J]. TV Technology,2012, 36(19):92-96.
[4] KAUPPIEN H,Sepanen T. An experiment comparison of autoregressive and Fourier-based descriptors in 2D shape classification [J]. IEEE Transaction on PAMI(S0302-9743),1995,17(2):201-207.
[7] GAO Xiaoliang,WANG Zhiliang,LIU Jiwei,et al. Variable Domain Algorithm for Image Segmentation Using Statistical Models Based on Intensity Features [J]. Acta Optica Sinica,2011,31(1):0115003.