如何提取灰度图像的位面? [英] How Can I Extract Bitplanes Of A Gray Image?
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问题描述
你好。我怎样才能提取灰度图像的位平面?
i想从某个地方读取灰色图片,所以:
a)用双翼飞机1显示它
b)用双翼飞机1和2显示它>
c)用双翼飞机1和2和3显示它
d)用双翼飞机1和2和3和4显示它
i应该启用重做和撤消操作
请帮助
hi there. how can i extract bitplanes of a gray image?
i wanna read a gray picture from some place and so :
a) show it with biplane1
b)show it with biplane1 and 2
c)show it with biplane1 and 2 and 3
d)show it with biplane1 and 2 and 3 and 4
i should enable the "redo" and "undo" actions
please help
推荐答案
我也在努力按照您的要求完成,但让我们从任何支持的图像格式文件(JPG,BMP,PNG,GIF和TIFF)的简单灰度显示开始
I am also struggling to follow exactly what you want but lets start with a simple grayscale display of any supported image format file (JPG,BMP, PNG, GIF & TIFF)
public static Bitmap MakeGrayscale(Image original)
{
//create a blank bitmap the same size as original image
Bitmap newBitmap = new Bitmap(original.Width, original.Height);
//get a graphics object from the new image
Graphics g = Graphics.FromImage(newBitmap);
//create the grayscale ColorMatrix
ColorMatrix colorMatrix = new ColorMatrix(
new float[][]
{
new float[] {.3f, .3f, .3f, 0, 0},
new float[] {.59f, .59f, .59f, 0, 0},
new float[] {.11f, .11f, .11f, 0, 0},
new float[] {0, 0, 0, 1, 0},
new float[] {0, 0, 0, 0, 1}
});
//create some image attributes
ImageAttributes attributes = new ImageAttributes();
//set the color matrix attribute
attributes.SetColorMatrix(colorMatrix);
//draw the original image on the new image
//using the grayscale color matrix
g.DrawImage(original, new Rectangle(0, 0, original.Width, original.Height),
0, 0, original.Width, original.Height, GraphicsUnit.Pixel, attributes);
//dispose the Graphics object
g.Dispose();
return newBitmap;
}
来自带有按钮的简单表格的示例通话看起来像
A sample call from say a simple form with a a button would look like
private void button1_Click(object sender, EventArgs e)
{
//get a graphics object
Graphics graph = CreateGraphics();
// load you bitmap image => change the name Image.jpg below to your image
// Don't forget full path if file isn't in exe directory
// the function supports BMP, JPG, PNG, TIFF or GIF formats
Image img = Image.FromFile("Image.jpg");
// Makes a greyscale version of the bitmap by calling above function
Bitmap b = MakeGrayscale(img);
// draw bitmap to 0,0 on form
graph.DrawImage(b, 0, 0);
}
希望有帮助作为开始
Hope that helps as a start
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