基于FPGA的IHS和提升小波变换的图像融合实现

Implementation of HIS Transform and Lifting Wavelet Transform Based on FPGA

在分析IHS和提升小波变换图像融合算法理论的基础上,给出了一种基于FPGA的该图像融合算法的设计实现。该设计首先对IHS变换模块进行了硬件实现构造,然后设计了多级小波提升模块以实现图像融合质量和小波分解层数的合理匹配。实验结果表明,采用本设计方法进行图像融合,误差小、精度高,融合效果优良,能够在FPGA上实现以满足图像实时处理的需求。

After analyzing the features of IHS transform and lifting wavelet transform image fusion algorithm, the design of a FPGA-based implementation method is proposed to implement the algorithm. Firstly, the IHS transform module is described in detail to complete the image space conversion. Secondly, the reasonable multi-level lifting wavelet transform module is given to improve image fusion quality. Finally, simulations are conducted on the presented algorithm, and the result indicates that the design can pass the verification on FPGA platform and has a good real-time performance.