我有一个黑白图像,我想反转(黑色到白色和白色到黑色),其中黑色= 0和白色= 255。我试图使用下面的代码,而不是反转我的图像,它只是使整个屏幕变黑。试图反转二进制图像给我全黑屏
module Inverter (
input [7:0] binary_red,
input [7:0] binary_green,
input [7:0] binary_blue,
output [7:0] inverted_red,
output [7:0] inverted_green,
output [7:0] inverted_blue);
parameter black = 0;
parameter white = 255;
assign inverted_red = (binary_red == black) ? white : black;
assign inverted_green = (binary_green == black) ? white : black;
assign inverted_blue = (binary_blue == black) ? white : black;
endmodule
任何想法为什么这不像我想要的那样颠倒?谢谢您的帮助!
编辑:所以有人要求看到更多的代码,因为它可能不是这个模块,搞砸了。有一种彩色滤光器,它接受原始RGB数据并滤除仅红色第一:
module Color_Filter (
input [9:0] oVGA_Red,
input [9:0] oVGA_Green,
input [9:0] oVGA_Blue,
output [7:0] filtered_Red,
output [7:0] filtered_Green,
output [7:0] filtered_Blue);
parameter redFilterValue = 150;
parameter greenFilterValue = 110;
parameter blueFilterValue = 110;
assign filtered_Red = (oVGA_Red[9:2] >= redFilterValue && oVGA_Green[9:2] <= greenFilterValue && oVGA_Blue[9:2] <= blueFilterValue) ? oVGA_Red[9:2] : 0;
assign filtered_Green = (oVGA_Red[9:2] >= redFilterValue && oVGA_Green[9:2] <= greenFilterValue && oVGA_Blue[9:2] <= blueFilterValue) ? oVGA_Green[9:2] : 0;
assign filtered_Blue = (oVGA_Red[9:2] >= redFilterValue && oVGA_Green[9:2] <= greenFilterValue && oVGA_Blue[9:2] <= blueFilterValue) ? oVGA_Blue[9:2] : 0;
endmodule
此它被转换后用下面的代码为灰度:
module Greyscale_Filter (
input [7:0] filtered_red,
input [7:0] filtered_green,
input [7:0] filtered_blue,
output [7:0] greyscale_red,
output [7:0] greyscale_green,
output [7:0] greyscale_blue);
assign greyscale_red = (filtered_red != 0) ? (299*filtered_red/1000)+(587*filtered_green/1000)+(114*filtered_blue/1000) : 0;
assign greyscale_green = (filtered_green != 0) ? (299*filtered_red/1000)+(587*filtered_green/1000)+(114*filtered_blue/1000) : 0;
assign greyscale_blue = (filtered_blue != 0) ? (299*filtered_red/1000)+(587*filtered_green/1000)+(114*filtered_blue/1000) : 0;
endmodule
然后,它前进到它着眼于灰度值,并转换为基于其价值二值图像,如下图所示:
module Binary_Filter (
input [7:0] greyscale_red,
input [7:0] greyscale_green,
input [7:0] greyscale_blue,
output [7:0] binary_red,
output [7:0] binary_green,
output [7:0] binary_blue);
parameter black = 0;
parameter white = 255;
assign binary_red = ((greyscale_red > 51) ? white : black);
assign binary_green = ((greyscale_green > 51) ? white : black);
assign binary_blue = ((greyscale_blue > 51) ? white : black);
endmodule
在这之后它进入我最初发布的反转模块。在我的顶层模块,这是通过做做:
Color_Filter color_filter (
.oVGA_Red(oVGA_R),
.oVGA_Green(oVGA_G),
.oVGA_Blue(oVGA_B),
.filtered_Red(filtered_R),
.filtered_Green(filtered_G),
.filtered_Blue(filtered_B)
);
Greyscale_Filter greyscale_Filter (
.filtered_red(filtered_R),
.filtered_green(filtered_G),
.filtered_blue(filtered_B),
.greyscale_red(greyscale_R),
.greyscale_blue(greyscale_G),
.greyscale_green(greyscale_B)
);
Binary_Filter binary_filter (
.greyscale_red(greyscale_R),
.greyscale_green(greyscale_G),
.greyscale_blue(greyscale_B),
.binary_red(binary_R),
.binary_green(binary_G),
.binary_blue(binary_B)
);
Inverter inverter (
.clk(VGA_CTRL_CLK),
.binary_red(binary_R),
.binary_green(binary_G),
.binary_blue(binary_B),
.inverted_red(inverted_R),
.inverted_green(inverted_G),
.inverted_blue(inverted_B)
);
你真的有二进制图像(每像素1位)或只是一个黑白图像? – Qiu 2014-11-20 20:49:29
我想这在技术上是黑白图像。我会进行彩色滤镜以找到红光,然后在任何红色的位置,我将三个颜色通道设置为255(白色),而不是任何地方设置为0(黑色) – Mike 2014-11-20 21:07:11
您的输入可能不是纯黑色和白色,但有灰色阴影。例如,如果'binary_red'为1(接近黑色),则'inverted_red'将为0(黑色),而不是254(接近白色)。尝试使用'〜'运算符进行反转:ex'assign inverted_red =〜binary_red;' – Greg 2014-11-20 21:08:46