基于DSP的双线性插值算法在图像旋转中的应用  

Application of BILINEAR Interpolation Algorithm Based on DSP in Image Rotation

作　　者：尹雪 刘思念 袁春梅 周杰 YIN Xue;LIU Sinian;YUAN Chunmei;ZHOU Jie(Department of Information and Communication Engineering,Chengdu University of Technology,Chengdu 610059)

机构地区：[1]成都理工大学信息与通信工程系,成都610059

出　　处：《舰船电子工程》2020年第3期97-100,共4页Ship Electronic Engineering

基　　金：国家高技术研究发展计划(863计划)基金项目(编号:A08K021);国家自然科学基金项目(编号:61201397,11375055)资助。

摘　　要：处理图像的算法很多,图像旋转则是比较典型的算法,也是一种基本的几何运算。为了解决最近邻插值法处理后的图像质量受损,灰度值不连续的情况,论文提出用双线性插值算法来实现图像的旋转、缩放以及实时旋转,并在实时图像处理专用DSP芯片平台TMS320DM642上进行硬件功能仿真测试。通过测试,算法实现了以上三种功能并取得了较好的效果。但是仍然存在由于算法计算量太大且复杂而带来的图像质量受损与时长过长的问题。There are many algorithms for image processing,and image rotation is a typical algorithm and a basic geometric operation.In order to solve the problem that the quality of the image processed by nearest neighbor interpolation is damaged and the gray value is not continuous,this paper proposes Bilinear interpolation algorithm to realize image rotation,scaling and real-time rotation,and the hardware function is tested on TMS320 DM642 in a special DSP platform for real-time image processing.Through testing,the algorithm has realized the above three functions and achieved good results.But there is still the problem that the image quality is damaged and the image time is too long because the algorithm is too large and complex.

关 键 词：图像旋转 双线性插值 DSP 

分 类 号：TN957.52[电子电信—信号与信息处理]