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1 顶层代码
`timescale 1ns / 1ps
// 边缘检测一阶微分算子：Sobel算子module image_sobel_edge_detect (input clk, // 时钟信号input reset, // 复位信号input vsync_i, // 输入场同步信号input valid_i, // 输入数据有效信号input [15:0] rgb_565_i, // 输入的16位RGB图像数据input [10:0] img_width,input [ 9:0] img_height,output vsync_o, //输出帧有效信号 output valid_o, // 输出数据有效信号output [15:0] rgb_565_o // 输出的16位RGB图像数据
);//常量声明localparam MODE = 0; //0表示彩色图像输出，1表示灰度图像输出//变量声明wire valid;wire vsync;wire [23:0] prev_line_data;wire [23:0] cur_line_data;wire [23:0] next_line_data;reg valid_d1;reg vsync_d1;reg [23:0] prev_line_data_d1;reg [23:0] cur_line_data_d1;reg [23:0] next_line_data_d1;reg [23:0] prev_line_data_d2;reg [23:0] cur_line_data_d2;reg [23:0] next_line_data_d2;reg [10:0] x_cnt;reg valid_s;reg vsync_s;reg [23:0] prev_line_data_d2_s;reg [23:0] cur_line_data_d2_s;reg [23:0] next_line_data_d2_s;reg [23:0] prev_line_data_d1_s;reg [23:0] cur_line_data_d1_s;reg [23:0] next_line_data_d1_s;reg [23:0] prev_line_data_s;reg [23:0] cur_line_data_s;reg [23:0] next_line_data_s;wire [7:0] R0, G0, B0;wire [7:0] R1, G1, B1;wire [7:0] R2, G2, B2;wire [7:0] R3, G3, B3;wire [7:0] R4, G4, B4;wire [7:0] R5, G5, B5;wire [7:0] R6, G6, B6;wire [7:0] R7, G7, B7;wire [7:0] R8, G8, B8;reg valid_s_d1;reg vsync_s_d1;wire [9:0] Gx_R0_a, Gx_R1_a;wire [9:0] Gx_G0_a, Gx_G1_a;wire [9:0] Gx_B0_a, Gx_B1_a;wire [9:0] Gy_R0_a, Gy_R1_a;wire [9:0] Gy_G0_a, Gy_G1_a;wire [9:0] Gy_B0_a, Gy_B1_a;reg [9:0] Gx_R, Gx_G, Gx_B;reg [9:0] Gy_R, Gy_G, Gy_B;reg valid_s_d2;reg vsync_s_d2;wire [10:0] R_sum_a, G_sum_a, B_sum_a;reg [10:0] R_sum, G_sum, B_sum;wire [11:0] RGB_sum;wire [7:0] gray;reg valid_s_d3;reg vsync_s_d3;reg [23:0] img_data_o;wire [23:0] img_data_i;assign img_data_i = {rgb_565_i[15:11], 3'b000, rgb_565_i[10:5], 2'b00, rgb_565_i[4:0], 3'b000};image_line_buffer u_image_line_buffer (.clk (clk),.reset (reset),.img_width (img_width),.img_height (img_height),.valid_i (valid_i),.img_data_i (img_data_i),.valid_o (valid),.cam_vsync_o (vsync),.prev_line_data_o(prev_line_data),.cur_line_data_o (cur_line_data),.next_line_data_o(next_line_data));always @(posedge clk or negedge reset) beginif (!reset) beginvalid_d1 <= 0;vsync_d1 <= 0;prev_line_data_d1 <= 0;cur_line_data这篇关于FPGA 图像边缘检测Verilog代码（Sobel算子）的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
