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The Development and Application of Hierarchical Experimenting Platform for Embedded System Course
Kaisheng Zhang,Yuehua Li,Yao Gong 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.11
There are many disadvantages existing in the current experimenting platforms for embedded system course. Therefore, this paper has devised a hierarchical experimenting platform based on the CDIO education mode to improve both the teaching and learning experience. The experimenting platform devised in this paper is composed of a motherboard and several microprocessor plug-in boards. The motherboard can meet with various experimenting requirements by changing different plug-in boards. The demonstration source code is plug-in board independent, so the source code can be shared by different plug-in boards. The teaching practical shows that, this hierarchical experimenting platform can significantly improve the teaching and learning experience.
Hardware Implementation on the Weight Calculation of Iterative Algorithm for CT Image Reconstruction
Xixin Cao,Kaisheng Ma,Renchun Lian,Qihui Zhang 한국전자통신연구원 2013 ETRI Journal Vol.35 No.5
The weight calculation in an iterative algorithm is the most computationally costly task in computed tomography image reconstruction. In this letter, a fast algorithm to speed up the weight calculation is proposed. The classic square pixel rotation approximate calculation method for computing the weights in the iterative algorithm is first analyzed and then improved by replacing the square pixel model with a circular pixel model and the square rotation approximation with a segmentation method of a circular area. Software simulation and hardware implementation results show that our proposed scheme can not only improve the definition of the reconstructed image but also accelerate the reconstruction.