基于FPGA的图像一维FFT变换IFFT逆变换verilog实现,包含tb测试文件和MATLAB辅助验证

1.算法运行效果图预览

fpga仿真结果

matlab调用FPGA的仿真结果进行图像显示

2.算法运行软件版本

vivado2019.2

matlab2022a

3.部分核心程序

module test_image;
//图片大小
parameter RR=256;
parameter CC=256;
  
reg i_clk;       
reg i_rst; 
  
reg i_image_en;
reg[7:0] i_image;
             
wire o_en_1dfft;
wire o_last_1dfft;
wire[19:0] o_image_R1dfft;
wire[19:0] o_image_I1dfft;      
             
             
             
Image_1Dfft Image_1Dfft_u(      
         .i_clk                 (i_clk),
         .i_rst                 (i_rst),
         .i_image_en            (i_image_en),
         .i_image               (i_image),
          
         .o_en_1dfft            (o_en_1dfft),
         .o_last_1dfft          (o_last_1dfft),
         .o_image_R1dfft        (o_image_R1dfft), 
         .o_image_I1dfft        (o_image_I1dfft) 
         );     
          
          
wire o_en_1difft;
wire[7:0] o_image_ifft; 
  
Image_1Difft Image_1Difft_u(        
         .i_clk                 (i_clk),
         .i_rst                 (i_rst),
         .i_image_en            (o_en_1dfft),
         .i_Rimage              (o_image_R1dfft),
         .i_Iimage              (o_image_I1dfft),
         .o_en_1difft           (o_en_1difft),
         .o_image_ifft          (o_image_ifft)
         );
  
         
         
         
initial begin
i_clk  = 1;
i_rst  = 1;
#1000;
i_rst = 0;
end
always #10 i_clk = ~i_clk;  
  
  
//读取图片数据
integer i,j;
reg[15:0]Men_images [(RR*CC-1):0];
initial #500 $readmemh("D:/FPGA_Proj/FPGAtest/codepz/FPGA_image_input.txt",  Men_images);   
  
//将数据保存到txt，用来matlab调用
integer Ifout1;
integer fout2;
initial begin
 Ifout1 = $fopen("EN2.txt","w");
 fout2 = $fopen("IiFFT.txt","w");
end
  
always @ (posedge i_clk)
 begin
  
     
     
   if(o_en_1difft)
    $fwrite(Ifout1,"%d\n",o_en_1difft);
    else
    $fwrite(Ifout1,"%d\n",0);
     
   if(o_en_1difft)
    $fwrite(fout2,"%d\n",o_image_ifft);
    else
    $fwrite(fout2,"%d\n",0);
     
end
endmodule
0X_037m

4.算法理论概述

基于现场可编程门阵列（Field-Programmable Gate Array, FPGA）实现的图像一维快速傅里叶变换（Fast Fourier Transform, FFT）和逆快速傅里叶变换（Inverse Fast Fourier Transform, IFFT）是数字信号处理领域的重要技术，特别是在图像处理、通信和信号分析等方面有着广泛的应用。