用于FPGA平台上图像快速旋转的改进CORDIC算法  

The CORDIC algorithm for high-speed image rotation on FPGA platform

作　　者：高宇杰 李武森[1] 戚云菲 陈文建[1] Gao Yujie;Li Wusen;Qi Yunfei;Chen Wenjian(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Faculty of Data Science,City University of Macao,Macao 999078,China)

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094 [2]澳门城市大学数据科学学院,中国澳门999078

出　　处：《电子技术应用》2024年第3期100-103,共4页Application of Electronic Technique

摘　　要：坐标旋转数字算法(CORDIC)被广泛应用于消旋、相机边框等系统中。在对传统CORDIC算法分析的基础上提出了重编码预测和多倍迭代优化的方法,并用MATLAB进行了仿真,又在VIVADO上进行了FPGA验证与对比。实验结果表明,上述优化相对传统CORDIC算法以及VIVADO自带的CORDIC IP核显著减少了迭代次数,消耗了更少的资源,计算的精度也有了一定的提升。The Coordinate Rotation Digital Algorithm(CORDIC)was widely used in racemic systems,camera frames and other applications.Based on the analysis of the traditional CORDIC algorithm,a method of recoding prediction and multi-times iterative optimization was proposed,simulated with MATLAB,verified and compared with FPGA on VIVADO.The experimental results show that compared with the traditional CORDIC algorithm and the VIVADO CORDIC IP core,the optimization here significantly reduced the iteration times,consumed less resources,and the calculation accuracy also be improved.

关 键 词：图像旋转 坐标旋转数字算法 重编码预测 多倍迭代 

分 类 号：TN492[电子电信—微电子学与固体电子学]