基于FPGA的火焰识别系统开发的详细版欢迎订阅本博：

https://blog.csdn.net/ccsss22/article/details/115406504 

1.问题描述：
        传统的森林火灾检测技术由于效率低、价格昂贵等缺点，并不适用于森林火灾探测。文中提出并设计与实现了一种基于小波变换的森林视频火灾烟雾检测方法，使用帧间差分法和质心算法提取疑似烟雾运动目标区域，然后对提取的运动目标的前景区域和背景区域进行小波能量特征提取与分析。

2.部分程序： 

`timescale 1ns / 1ps
//
// Company: 
// Engineer: 
// 
// Create Date:    08:29:24 02/23/2018 
// Design Name: 
// Module Name:    smoke_reg1 
// Project Name: 
// Target Devices: 
// Tool versions: 
// Description: 
//
// Dependencies: 
//
// Revision: 
// Revision 0.01 - File Created
// Additional Comments:  
//
//
module smoke_reg1(
                i_clk25MHz,
                     i_rst,
                     i_en,
                     i_R,
                     i_G,
                     i_B,
                     i_Fire_reg,
                     o_Smke_reg,
                     o_R_delay,
                     o_G_delay,
                 o_B_delay
                  );

parameter T0 =25;
 

input      i_clk25MHz;
input      i_rst;
input      i_en;
input[7:0] i_R;
input[7:0] i_G;
input[7:0] i_B;
input      i_Fire_reg;
output     o_Smke_reg;
output[7:0]o_R_delay;
output[7:0]o_G_delay;
output[7:0]o_B_delay;

//[M,N]   = size(R);
//SMKE    = zeros(M,N);
//T0      = 25;
//
//
//%特征提取
//for i = 1:M
//    for j = 1:N
//        Cmax = max([R(i,j),G(i,j),B(i,j)]);
//        Cmin = min([R(i,j),G(i,j),B(i,j)]);
//        I    = (R(i,j)+G(i,j)+B(i,j))/3;

//    end
//end

reg[7:0]Cmax;
reg[7:0]Cmin;
reg[9:0]I;
reg     o_Smke_reg;

reg[7:0]TR;
reg[7:0]TG;
reg[7:0]TB;

always @(posedge i_clk25MHz or posedge i_rst)
begin
     if(i_rst)
      begin
      Cmax       <= 8'd0;
      Cmin       <= 8'd0;
      TR         <= 8'd0;      
      TG         <= 8'd0;
      TB         <= 8'd0;      
      I          <= 10'd0;
      o_Smke_reg <= 1'b0;
      end
else begin
          if(i_R >= i_G & i_R >= i_B)
             Cmax <= i_R;
             
          if(i_G >= i_R & i_G >= i_B)
             Cmax <= i_G;        
             
          if(i_B >= i_R & i_B >= i_G)
             Cmax <= i_B;    
             
          if(i_R <= i_G & i_R <= i_B)
             Cmin <= i_R;
             
          if(i_G <= i_R & i_G <= i_B)
             Cmin <= i_G;        
             
          if(i_B <= i_R & i_B <= i_G)
             Cmin <= i_B;             
             
             I    <= {2'b00,i_R}+{2'b00,i_G}+{2'b00,i_B};
             
             if(i_R >= i_G)
             TR <= i_R - i_G;
             else
             TR <= i_G - i_R;
             
             if(i_R >= i_B)
             TB <= i_R - i_B;
             else
             TB <= i_B - i_R;

             if(i_B >= i_G)
             TG <= i_B - i_G;
             else
             TG <= i_G - i_B;             
             
             
             
//        if fire(i,j) == 0 %对非火焰区域进行烟雾检测
//           if I>= 20 & I <= 150&... 
//              (abs(R(i,j)-G(i,j)) <= T0 & abs(R(i,j)-B(i,j)) <= T0 & abs(B(i,j)-G(i,j)) <= T0)
//               SMKE(i,j) = 1;
//           end
//        end
             
             if(i_Fire_reg == 1'b0)
             begin
                  if((I >= 10'd60 & I <= 10'd450) & (TR <= T0)  & (TG <= T0)  & (TB <= T0))
//                if((I >= 10'd60 & I <= 10'd450) & (TR <= T0 & TR >= 3)  & (TG <= T0 & TG >= 3)  & (TB <= T0 & TB >= 3))
                  o_Smke_reg <= 1'b1;
                    else
                    o_Smke_reg <= 1'b0;
             end
             else
             begin
             o_Smke_reg <= 1'b0;
             end 
     end
end

//delay
reg[7:0]r_R_delay1;
reg[7:0]r_G_delay1;
reg[7:0]r_B_delay1;
reg[7:0]r_R_delay2;
reg[7:0]r_G_delay2;
reg[7:0]r_B_delay2;
always @(posedge i_clk25MHz or posedge i_rst)
begin
     if(i_rst)
      begin
      r_R_delay1 <= 8'd0;
      r_G_delay1 <= 8'd0;
      r_B_delay1 <= 8'd0;
      r_R_delay2 <= 8'd0;
      r_G_delay2 <= 8'd0;
      r_B_delay2 <= 8'd0;      
      end
else begin
      r_R_delay1 <= i_R;
      r_G_delay1 <= i_G;
      r_B_delay1 <= i_B;     
      r_R_delay2 <= r_R_delay1;
      r_G_delay2 <= r_G_delay1;
      r_B_delay2 <= r_B_delay1;           
     end      
end
 
assign o_R_delay = r_R_delay2;
assign o_G_delay = r_G_delay2;
assign o_B_delay = r_B_delay2; 

endmodule
 

3.仿真结论：

A-023-040