图像仿射变换的FPGA程序设计

摘要：随着多传感器技术在军事、医学等方面的广泛应用，用于图像融合的图像配准技术成为了世界各国的研究热点，而用于图像配准的图像仿射变换显得尤为重要。由于图像仿射变换算法计算量较大，本文研究的图像仿射变换算法主要针对FPGA平台，FPGA平台能够保证在系统低功耗的基础上满足实时性要求。本文在分析并研究了图像仿射变换相关理论的基础上，挑选了易在FPGA平台运行的双线性插值算法进行仿射变换。利用读写不同频的技术保证了图像处理的实时性要求。同时，通过增加运算精度提高算法的变换精度。最终实现了图像的缩放、平移、旋转等功能。

关键词图像配准仿射变换 FPGA 双线性插值59627

毕业设计说明书（论文）外文摘要

Title FPGA Program Design of Image Affine Transform

Abstract

With the widely used of multi-sensor technology in the military, medicine and other aspects, image registration techniques for image fusion become world research focus. The image affine transformation used in image registration is particularly important. Since the large amount of calculation of affine transformation algorithm, this study of the image affine transformation algorithm focus on FPGA . FPGA can guarantee the low-power consumption system and meet the real-time requirements. Based on the analysis and study of the image affine transformation relevant theories, We choose the bilinear interpolation algorithm which can run easily in the FPGA to carry out affine transformation. Using the technology of different frequent of reading and writing to ensure the real-time requirements of image processing. Meanwhile, algorithm transform accuracy is improved by increasing the accuracy of the calculation. Ultimately, the image scaling, translation, rotation and other functions are realized.

Keywords Image registration Affine transformation FPGA Bilinear interpolation

1 引言 1

1.1 图像配准研究现状及方法 1

1.2 FPGA的应用优势 2

1.3 本文的主要内容 3

2 图像配准 5

2.1 图像配准的基本概念 5

2.2 图像配准的数学模型 5

2.3 图像配准的空间变换模型 5

3 系统的硬件结构 9

4 系统软件结构 11

4.1 Quartus II 11

4.2 本次设计算法实现的基本模块 12

4.3 变换系数产生模块 12

4.4 原图像素坐标生成模块 13

4.5 读写地址及使能产生模块 14

4.7 图像数据插值计算模块 15

4.8 本设计模块图 16

5 实验结果 20

5.1 系统设备实物图 20

5.2 实验结果图 21

5.3 实验结果分析 22

结论与展望 23

致谢 24

参考文献 25

1 引言图像仿射变换的FPGA程序设计:http://www.youerw.com/tongxin/lunwen_64906.html