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我需要黑色圖像轉換爲灰度image.my代碼轉換彩色圖像爲灰度image.but不會轉換黑色圖像 爲灰度image.Even嘗試從計算器一個樣品 灰度轉換。這也不適用於黑色到灰度的 圖像轉換。該鏈接是https://stackoverflow.com/a/2265990/8569792黑色圖像轉換爲灰度圖像
public void GreyScaleConversion()
{
//read image
Bitmap bmp = global::Ribbon.Properties.Resources.Device;
//load original image in picturebox1
pictureBox1.Image = global::Ribbon.Properties.Resources.Device;
//get image dimension
int width = bmp.Width;
int height = bmp.Height;
//color of pixel
Color p;
//grayscale
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
//get pixel value
p = bmp.GetPixel(x, y);
//extract pixel component ARGB
int a = p.A;
int r = p.R;
int g = p.G;
int b = p.B;
//find average
int avg = (r + g + b)/3;
//set new pixel value
bmp.SetPixel(x, y, Color.FromArgb(a, avg, avg, avg));
}
}
//load grayscale image in picturebox2
pictureBox2.Image = bmp;
}