各位大大您好，新手請問關於C#寫影像顏色抓取
private void WebCamCapture_ImageCaptured(object source,WebCam_Capture.WebcamEventArgs e)請問有大大看過這個寫好的DLL黨的解釋嗎?
因為小弟一直找不到這個內容，還有可以請問大大image.LockBits功用嗎?
全文如下
private void WebCamCapture_ImageCaptured(object source, WebCam_Capture.WebcamEventArgs e)
{
this.pictureBox2.Image = e.WebCamImage;//255.153.0，是webcam自己拍到影像之後做的事情，就像之前講的timer，我們設定時間，時間一到就會做的事情。
Bitmap image = new Bitmap(e.WebCamImage);//new Rectangle(0, 0, e.WebCamImage.Width, e.WebCamImage.Height), e.WebCamImage.PixelFormat);
Bitmap mask = ((Bitmap)image).Clone(new Rectangle(0, 0, image.Width, image.Height), PixelFormat.Format24bppRgb);
ColorFiltering filter = new ColorFiltering();
// set color ranges to keep
filter.Red = new IntRange(threshold_Red-10, threshold_Red+10);
filter.Green = new IntRange(threshold_Green-10, threshold_Green+10);
filter.Blue = new IntRange(threshold_Blue-10, threshold_Blue+10);
// apply the filter
filter.ApplyInPlace(image);
BitmapData imageData = image.LockBits(new Rectangle(0,0,image.Width, image.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite,image.PixelFormat);
BitmapData maskData = mask.LockBits(new Rectangle(0, 0, mask.Width, mask.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, mask.PixelFormat);
unsafe
{
byte* pI = (byte*)(imageData.Scan0);
byte* pM = (byte*)(maskData.Scan0);
for (int y = 0; y < imageData.Height; y++)
{
for (int x = 0; x < imageData.Width; x++)
{
if (pI[0] != 0 && pI[1] != 0 && pI[2] != 0 && pI[3] != 0)
{
pM[0] = (byte)1;
pM[1] = (byte)1;
pM[2] = (byte)1;
//pM[3] = (byte)1;
}
else
{
pM[0] = (byte)0;
pM[1] = (byte)0;
pM[2] = (byte)0;
//pM[3] = (byte)0;
}
pI += 4;
pM += 3;
}
}
image.UnlockBits(imageData);
mask.UnlockBits(maskData);
}
Closing filterC = new Closing();
// apply the filter
mask = filterC.Apply(mask);
BlobCounterBase bc = new BlobCounter();
bc.FilterBlobs = false;// true;
bc.MinWidth = 50;
bc.MinHeight = 50;
bc.ObjectsOrder = ObjectsOrder.Size;
bc.ProcessImage(mask);
Graphics g = Graphics.FromImage(image);
Blob[] blobs = bc.GetObjectsInformation();
if (blobs.Length > 0)
{
g.DrawRectangle(Pens.Red, blobs[0].Rectangle);
/*if (blobs[0].Rectangle.X - lastLocate.X > blobs[0].Rectangle.Width)
label9.Text = "Left";
else if (blobs[0].Rectangle.X - lastLocate.X < blobs[0].Rectangle.Width)
label9.Text = "Right";
else
label9.Text = "None";*/
label9.Text = ((blobs[0].Rectangle.X + blobs[0].Rectangle.Width / 2) - image.Width / 2).ToString();
//label10
}
pictureBox1.Image = image;
}
private void Capturing_Tick(object sender, EventArgs e)
{
try
{
Bitmap image = new Bitmap(pictureBox2.Image);//(BitmappictureBox2.Image.Clone();//new Rectangle(0, 0, e.WebCamImage.Width, e.WebCamImage.Height), e.WebCamImage.PixelFormat);
Bitmap mask = ((Bitmap)image).Clone(new Rectangle(0, 0, image.Width, image.Height), PixelFormat.Format24bppRgb);
ColorFiltering filter = new ColorFiltering();
// set color ranges to keep
filter.Red = new IntRange(threshold_Red - 50, threshold_Red + 50);
filter.Green = new IntRange(threshold_Green - 50, threshold_Green + 50);
filter.Blue = new IntRange(threshold_Blue - 50, threshold_Blue + 50);
// apply the filter
filter.ApplyInPlace(image);
BitmapData imageData = image.LockBits(new Rectangle(0, 0, image.Width, image.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, image.PixelFormat);
BitmapData maskData = mask.LockBits(new Rectangle(0, 0, mask.Width, mask.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, mask.PixelFormat);
unsafe
{
byte* pI = (byte*)(imageData.Scan0);
byte* pM = (byte*)(maskData.Scan0);
for (int y = 0; y < imageData.Height; y++)
{
for (int x = 0; x < imageData.Width; x++)
{
if (pI[0] != 0 && pI[1] != 0 && pI[2] != 0 && pI[3] != 0)
{
pM[0] = (byte)1;
pM[1] = (byte)1;
pM[2] = (byte)1;
//pM[3] = (byte)1;
}
else
{
pM[0] = (byte)0;
pM[1] = (byte)0;
pM[2] = (byte)0;
//pM[3] = (byte)0;
}
pI += 4;
pM += 3;
}
}
image.UnlockBits(imageData);
mask.UnlockBits(maskData);
}
Closing filterC = new Closing();
// apply the filter
mask = filterC.Apply(mask);
BlobCounterBase bc = new BlobCounter();
bc.FilterBlobs = false;// true;
bc.MinWidth = 50;
bc.MinHeight = 50;
bc.ObjectsOrder = ObjectsOrder.Size;
bc.ProcessImage(mask);
Graphics g = Graphics.FromImage(image);
Blob[] blobs = bc.GetObjectsInformation();
if (blobs.Length > 0)
{
g.DrawRectangle(Pens.Red, blobs[0].Rectangle);
/*if (blobs[0].Rectangle.X - lastLocate.X > blobs[0].Rectangle.Width)
label9.Text = "Left";
else if (blobs[0].Rectangle.X - lastLocate.X < blobs[0].Rectangle.Width)
label9.Text = "Right";
else
label9.Text = "None";*/
int move = (blobs[0].Rectangle.X + blobs[0].Rectangle.Width / 2) - image.Width / 2;
int moveY = (blobs[0].Rectangle.Y + blobs[0].Rectangle.Height / 2) - image.Height / 2;
label9.Text = move.ToString();
补充：.NET技术 , C#
