我有一段代码,可以将电脑上保存的图像处理成灰度、平滑灰度、Canny边缘图像。但我希望对图像进行锐化处理,添加某种滤镜,然后再转换为灰度和Canny边缘帧。我认为我的代码正确,但运行程序时似乎没有任何不同。是锐化图像的位置不对吗?它被忽视了吗?如有建议,请告诉我。
private void ProcessFrame()
{
String fileName = @"C:\filename";
**Sharpen Image Filter code**
public static Bitmap sharp(Bitmap img)
{
Bitmap sharpenImage = new Bitmap(img.Width, img.Height);
int filterWidth = 3;
int filterHeight = 3;
int w = img.Width;
int h = img.Height;
double[,] filter = new double[filterWidth, filterHeight];
filter[0, 0] = filter[0, 1] = filter[0, 2] = filter[1, 0] = filter[1, 2] =
filter[2,0] = filter[2, 1] = filter[2, 2] = -1;
filter[1, 1] = 9;
double factor = 1.0;
double bias = 0.0;
Color[,] result = new Color[img.Width, img.Height];
for (int x = 0; x < w; ++x)
{
for (int y = 0; y < h; ++y)
{
double red = 0.0, green = 0.0, blue = 0.0;
for (int filterX = 0; filterX < filterWidth; filterX++)
{
for (int filterY = 0; filterY < filterHeight; filterY++)
{
int imageX = (x - filterWidth / 2 + filterX + w) % w;
int imageY = (y - filterHeight / 2 + filterY + h) % h;
Color imageColor = img.GetPixel(imageX, imageY);
red += imageColor.R * filter[filterX, filterY];
green += imageColor.G * filter[filterX, filterY];
blue += imageColor.B * filter[filterX, filterY];
}
int r = Math.Min(Math.Max((int)(factor * red + bias), 0), 255);
int g = Math.Min(Math.Max((int)(factor * green + bias), 0), 255);
int b = Math.Min(Math.Max((int)(factor * blue + bias), 0), 255);
result[x, y] = Color.FromArgb(r, g, b);
}
}
}
for (int i = 0; i < w; ++i)
{
for (int j = 0; j < h; ++j)
{
sharpenImage.SetPixel(i, j, result[i, j]);
}
}
return sharpenImage;
}
**Sharpen Image Code Ends**