verilog图像放大线性插值代码
时间: 2023-07-23 21:24:28 浏览: 44
以下是一个简单的 Verilog 代码示例,用于执行图像放大线性插值:
```verilog
module image_zoom #(
parameter WIDTH = 8,
parameter HEIGHT = 8,
parameter ZOOM_FACTOR = 2
)(
input clk,
input rst,
input [WIDTH-1:0] image_in [HEIGHT],
output [WIDTH-1:0] image_out [HEIGHT*ZOOM_FACTOR]
);
wire [WIDTH-1:0] pixel_1, pixel_2, interpolated_pixel;
reg [WIDTH-1:0] row_in [HEIGHT];
reg [WIDTH-1:0] row_out [HEIGHT*ZOOM_FACTOR];
reg [WIDTH-1:0] pixel_out;
// Store input row in registers for faster access
always @(posedge clk) begin
if (rst) begin
for (int i = 0; i < HEIGHT; i++) begin
row_in[i] <= {WIDTH{1'b0}};
end
end else begin
for (int i = 0; i < HEIGHT; i++) begin
row_in[i] <= image_in[i];
end
end
end
// Perform linear interpolation on each row
always @(posedge clk) begin
if (rst) begin
for (int i = 0; i < HEIGHT*ZOOM_FACTOR; i++) begin
row_out[i] <= {WIDTH{1'b0}};
end
end else begin
for (int i = 0; i < HEIGHT; i++) begin
for (int j = 0; j < WIDTH; j++) begin
pixel_1 <= row_in[i][j];
pixel_2 <= row_in[i][(j+1)%WIDTH];
for (int k = 0; k < ZOOM_FACTOR; k++) begin
// Interpolate between adjacent pixels
interpolated_pixel <= ((ZOOM_FACTOR-k)*pixel_1 + k*pixel_2) / ZOOM_FACTOR;
row_out[i*ZOOM_FACTOR + k][j] <= interpolated_pixel;
end
end
end
end
end
// Output interpolated image row by row
always @(posedge clk) begin
if (rst) begin
pixel_out <= {WIDTH{1'b0}};
end else begin
for (int i = 0; i < HEIGHT*ZOOM_FACTOR; i++) begin
pixel_out <= row_out[i];
image_out[i] <= pixel_out;
end
end
end
endmodule
```
该代码模块化地执行了以下三个步骤:
1. 在时钟上升沿时,将输入图像的每一行存储在寄存器中。
2. 在时钟上升沿时,对每一行执行线性插值,并将结果存储在另一个存储器中。
3. 在时钟上升沿时,将输出图像的每一行从存储器中读取并输出。
请注意,此代码仅用于演示目的。实际应用中,您可能需要对输入和输出进行缩放和裁剪,以确保输出图像具有所需的大小和宽高比。