基于vhdl实现最邻近插值法

Question

进行课程设计，所以求最后vhdl的实现步骤，麻烦各位大神

 

Answer 1

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity NearestNeighborInterpolation is
    Port (
        clk : in STD_LOGIC;
        rst : in STD_LOGIC;
        input_ready : in STD_LOGIC;
        input_pixel : in STD_LOGIC_VECTOR(7 downto 0);
        output_ready : out STD_LOGIC;
        output_pixel : out STD_LOGIC_VECTOR(7 downto 0)
    );
end NearestNeighborInterpolation;

architecture Behavioral of NearestNeighborInterpolation is
    signal pixel_buffer : STD_LOGIC_VECTOR(7 downto 0);
begin
    process (clk, rst)
    begin
        if rst = '1' then
            pixel_buffer <= (others => '0');
            output_ready <= '0';
        elsif rising_edge(clk) then
            if input_ready = '1' then
                pixel_buffer <= input_pixel;
                output_ready <= '1';
            end if;
        end if;
    end process;

    process (pixel_buffer)
    begin
        if pixel_buffer(7) = '1' then -- Checking if MSB is 1 (new frame)
            output_pixel <= pixel_buffer(6 downto 0) & pixel_buffer(6 downto 0) & pixel_buffer(6 downto 0); -- Replicating pixel value to adjacent pixels
        else
            output_pixel <= pixel_buffer; -- No need for interpolation within the frame
        end if;
    end process;
end Behavioral;