中财网阳东育龙学校好不好:RGB RAW 格式转换为 YUV格式的VHDL程序
来源：百度文库 编辑：中财网 时间：2024/05/02 07:44:50
bayer是低端彩色cmos sensor 常用的一种颜色模式，
下面的源码是一个bayer filter，输入8位bayer 数据，输出24位rgb，已经在fpga里验证过。
--------------------------------------------------------------------------------
-- Author : Yang Yuning
--
-- Create Date : 11/21/05
-- Module Name : bayer_filter
--
-- Description : Bayer filter, which converts input image data in bayer pattern format to rgb format.
--
-- color_sel : "00" "01" "10" "11"
-- input stream : BGBGBG....BG GBGBGB....GB GRGRGR....GR RGRGRG....RG
-- GRGRGR....GR RGRGRG....RG BGBGBG....BG GBGBGB....GB
-- ............ ............ ............ ............
-- BGBGBG....BG GBGBGB....GB GRGRGR....GR RGRGRG....RG
-- GRGRGR....GR RGRGRG....RG BGBGBG....BG GBGBGB....GB
--
-- Copyright : Institute of Computer Science V, University Mannheim, Germany
--------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity bayer_filter is
generic(
dw : integer := 8
);
port(
clk : in std_logic;
reset : in std_logic;
din_valid : in std_logic;
pixel_in : in std_logic_vector(dw - 1 downto 0);
eof_in : in std_logic;
eol_in : in std_logic;
color_sel_in : in std_logic_vector(1 downto 0);
dout_valid : out std_logic;
dout_r : out std_logic_vector(dw - 1 downto 0);
dout_g : out std_logic_vector(dw - 1 downto 0);
dout_b : out std_logic_vector(dw - 1 downto 0);
eof_out : out std_logic;
eol_out : out std_logic
);
end bayer_filter;
architecture rtl of bayer_filter is
-- pixel_window_3x3
component pixel_window_3x3 is
generic(
dw : integer := 8 -- data width
);
port(
clk : in std_logic;
reset : in std_logic;
din_valid : in std_logic;
pixel_in : in std_logic_vector(dw - 1 downto 0);
eof_in : in std_logic;
eol_in : in std_logic;
dout_valid : out std_logic;
w33 : out std_logic_vector(dw - 1 downto 0);
w32 : out std_logic_vector(dw - 1 downto 0);
w31 : out std_logic_vector(dw - 1 downto 0);
w23 : out std_logic_vector(dw - 1 downto 0);
w22 : out std_logic_vector(dw - 1 downto 0);
w21 : out std_logic_vector(dw - 1 downto 0);
w13 : out std_logic_vector(dw - 1 downto 0);
w12 : out std_logic_vector(dw - 1 downto 0);
w11 : out std_logic_vector(dw - 1 downto 0);
eof_out : out std_logic;
eol_out : out std_logic
);
end component;
signal dvalid_pixel_window, dvalid_pixel_window_reg, eof_pixel_window, eof_pixel_window_reg, eol_pixel_window, eol_pixel_window_reg : std_logic := '0';
signal color_sel, color_sel_reg : std_logic_vector(1 downto 0) := (others => '0');
signal w33, w32, w31, w23, w22, w21, w13, w12, w11, w22_reg : std_logic_vector(dw - 1 downto 0) := (others => '0');
signal sum_w21w23 : std_logic_vector(dw downto 0):= (others => '0');
signal sum_w12w32 : std_logic_vector(dw downto 0):= (others => '0');
signal sum_w11w13 : std_logic_vector(dw downto 0):= (others => '0');
signal sum_w31w33 : std_logic_vector(dw downto 0):= (others => '0');
begin
-- pixel_window_3x3
inst_pixel_window : pixel_window_3x3
generic map (
dw => dw
)
port map(
clk => clk, reset => reset,
din_valid => din_valid, pixel_in => pixel_in,
eof_in => eof_in, eol_in => eol_in,
dout_valid => dvalid_pixel_window,
w33 => w33, w32 => w32, w31 => w31,
w23 => w23, w22 => w22, w21 => w21,
w13 => w13, w12 => w12, w11 => w11,
eof_out => eof_pixel_window, eol_out => eol_pixel_window
);
-- control signal registers
process (clk)
begin
if clk'event and clk = '1' then
if reset = '1' or eof_pixel_window = '1' then
color_sel <= color_sel_in;
elsif eol_pixel_window = '1' then
color_sel(1) <= not color_sel(1);
color_sel(0) <= '0';
elsif dvalid_pixel_window = '1' then
color_sel(0) <= not color_sel(0);
end if;
end if;
end process;
-- color mixer
process(clk)
variable sum_w11w13w31w33, sum_w12w21w23w32 : std_logic_vector(dw + 1 downto 0);
begin
if clk'event and clk = '1' then
dvalid_pixel_window_reg <= dvalid_pixel_window;
eof_pixel_window_reg <= eof_pixel_window;
eol_pixel_window_reg <= eol_pixel_window;
dout_valid <= dvalid_pixel_window_reg;
eof_out <= eof_pixel_window_reg;
eol_out <= eol_pixel_window_reg;
color_sel_reg <= color_sel;
-- color mixer
if dvalid_pixel_window = '1' then
w22_reg <= w22;
sum_w21w23 <= ('0'&w21) + ('0'&w23);
sum_w12w32 <= ('0'&w12) + ('0'&w32);
sum_w11w13 <= ('0'&w11) + ('0'&w13);
sum_w31w33 <= ('0'&w31) + ('0'&w33);
end if;
sum_w12w21w23w32 := ('0'&sum_w12w32) + ('0'&sum_w21w23);
sum_w11w13w31w33 := ('0'&sum_w11w13) + ('0'&sum_w31w33);
case color_sel_reg is
when "00"=> -- BGB
dout_r<= w22_reg; -- GRG
dout_g<= sum_w12w21w23w32(dw + 1 downto 2); -- BGB
dout_b<= sum_w11w13w31w33(dw + 1 downto 2);
when "01"=> -- GBG
dout_r<= sum_w21w23(dw downto 1); -- RGR
dout_g<= w22_reg; -- GBG
dout_b<= sum_w12w32(dw downto 1);
when "10"=> -- GRG
dout_r<= sum_w12w32(dw downto 1); -- BGB
dout_g<= w22_reg; -- GRG
dout_b<= sum_w21w23(dw downto 1);
when "11"=> -- RGR
dout_r<= sum_w11w13w31w33(dw + 1 downto 2); -- GBG
dout_g<= sum_w12w21w23w32(dw + 1 downto 2); -- RGR
dout_b<= w22_reg;
when others =>
dout_r <= (others => 'X');
dout_g <= (others => 'X');
dout_b <= (others => 'X');
end case;
end if;
end process;
end rtl;
raw rgb 转换成 RGB或YUV 的芯片
如何将raw格式转换为fat格式
如何用编程的方式将raw格式转换为bmp格式
U盘的格式为RAW是怎么回事？
怎样把jpeg格式图片转换为RAW，把视频文件转换为nxv格式
YUV格式是什么意思
YUV格式是什么东东？
什么软件能把RAW格式的图片转换
RAW的磁盘格式是什么？
RAW格式的文件怎么转换成JPEG格式的文件呀?
u盘不能格式化 格式为RAW
我的D、E、F盘文件全部丢失，格式为RAW格式
f盘变成raw 格式如何修复为ntfs格式
怎样拯救我的文件? raw格式的硬盘怎样转换成fat32格式的? 急!急!急!
如何打开RAW格式的文件
音频文件RAW的存储格式是什么啊
移动硬盘分区变成RAW格式的解决办法
为什么raw格式的图片无法上传?
RAW格式的软盘没有办法格式化吗？
raw格式的移动硬盘如何恢复
为什么我把磁盘的格式改了，磁盘就打不开了，显示为raw格式并且可用空间为“0”
为什么我把磁盘的格式改了，磁盘就打不开了，显示为raw格式并且可用空间为“0”
介绍一下RAW格式
RAW文件系统是什么格式？