private void Count_timer_Tick(object sender, EventArgs e)
{
Countbox.Visible = true;
Countbox.Image = timePhotos[c_flag];
c_flag++;
if (c_flag > 3)
{
face_image = camera.QueryFrame();
faces =
gray.DetectHaarCascade(haar, 1.2, 10,
HAAR_DETECTION_TYPE.DO_CANNY_PRUNING,
new Size(25, 25))[0];
Count_timer.Stop();
Camera_timer.Start();
}
}
private void face_detect()
{
gray = face_image.Convert <Gray, byte>();//將camera輸出影像轉為灰階(EmguCV 語法)
//人臉抓取語法
faces =
gray.DetectHaarCascade(haar, 1.2, 10,
HAAR_DETECTION_TYPE.DO_CANNY_PRUNING,
new Size(25, 25))[0];
Image Input = face_image.ToBitmap();//轉檔camera輸出影像為Bitmap
//判斷人臉抓取是否為空
if (faces.Length > 0)
{
if (c_flag == 0)
{
Camera_timer.Stop(); //抓取到人臉後camera_timer停止
Count_timer.Start(); //計數圖片顯示
}
else
{
//Array.Clear(pic, 0, pic.Length);
Countbox.Image = timePhotos[c_flag];
c_flag = 0;
//Array.Clear(pic, 0, pic.Length);
Camera_timer.Stop(); //抓取到人臉後camera_timer停止
MCvAvgComp face = faces[0]; //宣告取得的人臉為face
//face_image.Draw(face.rect, new Bgr(Color.Red), 3);//將camera輸出影像對應抓取到的人臉，標記紅框
//將取得的人臉分割出來並另存為Bitmap
ExtractedFace = new Bitmap(face.rect.Width, face.rect.Height);
FaceCanvas = Graphics.FromImage(ExtractedFace);
FaceCanvas.DrawImage(Input, 0, 0, face.rect, GraphicsUnit.Pixel);
ExtractedFace.RotateFlip(RotateFlipType.Rotate270FlipNone); //旋轉影像
pictureBoxCenter.Visible = true; //顯示大圖影像
pictureBoxCenter.Image = ExtractedFace; //將分割的人臉載入當前的picturebox中
pictureBoxCenter.SizeMode = PictureBoxSizeMode.Zoom;
Invalidate();//清空box，重新繪製圖片
//半透明處理
matrix = new ColorMatrix(nArray);
attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
Image srcImage = (Image)ExtractedFace;
Bitmap resultImage = new Bitmap(srcImage.Width, srcImage.Height);
Graphics g = Graphics.FromImage(resultImage);
g.DrawImage(srcImage, new Rectangle(0, 0, srcImage.Width, srcImage.Height), 0, 0, srcImage.Width, srcImage.Height, GraphicsUnit.Pixel, attributes);
ExtFaces = resultImage;
in_taiwan();
//分割動畫距離格數
vx = (pictureBoxCenter.Location.X - pic[faceNo].Location.X) / fps;
vy = (pictureBoxCenter.Location.Y - pic[faceNo].Location.Y) / fps;
picout();
faceNo = (faceNo + 1) % (cnt_x * cnt_y); //faceNO++，限制圖片載量(台灣外部)
faces = null; //抓取一次人臉，清空一次，釋放記憶體
Countbox.Visible = false;
}
}
//攝影機影像顯示
pictureBoxCamera.Image = face_image.ToBitmap();
pictureBoxCamera.SizeMode = PictureBoxSizeMode.Zoom;
}
