目录
1.算法运行效果图预览
2.算法运行软件版本
3.部分核心程序
4.算法理论概述
4.1、RGB转CMYK的原理
4.2、基于FPGA的实现方法
5.算法完整程序工程
将仿真结果导入到matlab中,得到如下对比结果:
matlab2022a,vivado2019.2
`timescale 1ns / 1ps
//
// Company:
// Engineer:
//
// Create Date: 2023/08/01
// Design Name:
// Module Name: RGB2gray
// Project Name:
// Target Devices:
// Tool Versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//
module test_image;
reg i_clk;
reg i_rst;
reg [7:0] Rbuff [0:100000];
reg [7:0] Gbuff [0:100000];
reg [7:0] Bbuff [0:100000];
reg [7:0] i_Ir,i_Ig,i_Ib;
wire [7:0] o_K,o_C,o_M,o_Y;
integer fids1,dat1,fids2,dat2,fids3,dat3,jj=0;
//D:\FPGA_Proj\FPGAtest\codepz
initial
begin
fids1 = $fopen("D:\\FPGA_Proj\\FPGAtest\\codepz\\R.bmp","rb");
dat1 = $fread(Rbuff,fids1);
$fclose(fids1);
end
initial
begin
fids2 = $fopen("D:\\FPGA_Proj\\FPGAtest\\codepz\\G.bmp","rb");
dat2 = $fread(Gbuff,fids2);
$fclose(fids2);
end
initial
begin
fids3 = $fopen("D:\\FPGA_Proj\\FPGAtest\\codepz\\b.bmp","rb");
dat3 = $fread(Bbuff,fids3);
$fclose(fids3);
end
initial
begin
i_clk=1;
i_rst=1;
#1200;
i_rst=0;
end
always #5 i_clk=~i_clk;
always@(posedge i_clk)
begin
i_Ir<=Rbuff[jj];
i_Ig<=Gbuff[jj];
i_Ib<=Bbuff[jj];
jj<=jj+1;
end
main_RGB2CMYK main_RGB2CMYK_u(
.i_clk (i_clk),
.i_rst (i_rst),
.i_image_R (i_Ir),
.i_image_G (i_Ig),
.i_image_B (i_Ib),
.o_K (o_K),// Y
.o_C (o_C),// Y
.o_M (o_M),// Y
.o_Y (o_Y)
);
integer fout1;
initial begin
fout1 = $fopen("K.txt","w");
end
always @ (posedge i_clk)
begin
if(jj<=66616)
$fwrite(fout1,"%d\n",o_K);
else
$fwrite(fout1,"%d\n",0);
end
integer fout2;
initial begin
fout2 = $fopen("C.txt","w");
end
always @ (posedge i_clk)
begin
if(jj<=66616)
$fwrite(fout2,"%d\n",o_C);
else
$fwrite(fout2,"%d\n",0);
end
integer fout3;
initial begin
fout3 = $fopen("M.txt","w");
end
always @ (posedge i_clk)
begin
if(jj<=66616)
$fwrite(fout3,"%d\n",o_M);
else
$fwrite(fout3,"%d\n",0);
end
integer fout4;
initial begin
fout4 = $fopen("Y.txt","w");
end
always @ (posedge i_clk)
begin
if(jj<=66616)
$fwrite(fout4,"%d\n",o_Y);
else
$fwrite(fout4,"%d\n",0);
end
endmodule
0X_021m
基于FPGA的图像RGB转CMYK实现是一种将RGB图像转换为CMYK图像的硬件实现方法。下面将详细介绍其原理和数学公式。
RGB转CMYK是将RGB颜色空间转换为CMYK颜色空间的过程。RGB颜色空间是一种基于红绿蓝三种基本颜色的颜色空间,而CMYK颜色空间是一种基于青、洋红、黄、黑四种颜色的颜色空间。这两种颜色空间都是常用的颜色空间,但在某些应用中,CMYK颜色空间更为常用。在RGB转CMYK的过程中,首先要知道RGB值如何转换为C、M、Y三种颜色的值,然后再将这三种颜色的值转换为K值。这个过程可以通过以下公式实现:
K = 255-max([R,G,B]);
C = max([R,G,B]) - R;
M = max([R,G,B]) - G;
Y = max([R,G,B]) - B;
其中,R、G、B分别代表RGB颜色空间中的红、绿、蓝三种颜色的值,C、M、Y分别代表CMYK颜色空间中的青、洋红、黄三种颜色的值,K代表CMYK颜色空间中的黑色值。
基于FPGA的图像RGB转CMYK实现方法主要包括以下几个步骤:
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