public void CalculateChrominanceSize(int ratioValue, int expectedDivX, int expectedDivY)
{
YCbCrImage.YCbCrSubsampleRatio ratio = (YCbCrImage.YCbCrSubsampleRatio)ratioValue;
//this.Output.WriteLine($"RATIO: {ratio}");
Size size = YCbCrImage.CalculateChrominanceSize(400, 400, ratio);
//this.Output.WriteLine($"Ch Size: {size}");
Assert.Equal(new Size(400 / expectedDivX, 400 / expectedDivY), size);
}
internal void Create(YCbCrImage.YCbCrSubsampleRatio ratioValue, int expectedCStrideDiv)
{
YCbCrImage.YCbCrSubsampleRatio ratio = (YCbCrImage.YCbCrSubsampleRatio)ratioValue;
this.Output.WriteLine($"RATIO: {ratio}");
YCbCrImage img = new YCbCrImage(400, 400, ratio);
//this.PrintChannel("Y", img.YChannel);
//this.PrintChannel("Cb", img.CbChannel);
//this.PrintChannel("Cr", img.CrChannel);
Assert.Equal(400, img.YChannel.Width);
Assert.Equal(img.CbChannel.Width, 400 / expectedCStrideDiv);
Assert.Equal(img.CrChannel.Width, 400 / expectedCStrideDiv);
}
public static JpegEncoder WithImageFromFile(string filename)
{
FileStream fileStream = new FileStream(filename, FileMode.Open);
MemoryStream memoryStream = new MemoryStream();
fileStream.CopyTo(memoryStream);
fileStream.Close();
memoryStream.Seek(0, SeekOrigin.Begin);
RGBImage rgbImage = RGBImage.RGBImageBuilder.From(memoryStream).Build();
YCbCrImage yCbCrImage = ColorChannels.RgbToYCbCr(rgbImage);
return(new JpegEncoder(yCbCrImage));
}
/// <summary>
/// Gets an image made up of a subset of the originals pixels.
/// </summary>
/// <param name="x">The x-coordinate of the image.</param>
/// <param name="y">The y-coordinate of the image.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <returns>
/// The <see cref="YCbCrImage"/>.
/// </returns>
public YCbCrImage Subimage(int x, int y, int width, int height)
{
YCbCrImage ret = new YCbCrImage
{
Width = width,
Height = height,
YChannel = this.YChannel,
CbChannel = this.CbChannel,
CrChannel = this.CrChannel,
Ratio = this.Ratio,
YStride = this.YStride,
CStride = this.CStride,
YOffset = (y * this.YStride) + x,
COffset = (y * this.CStride) + x
};
return(ret);
}
private void MakeImg(int mxx, int myy)
{
if (nComp == 1){
var m = new GrayImage(8*mxx, 8*myy);
grayImage = m.subimage(0, 0, width, height);
} else{
var h0 = comp[0].h;
var v0 = comp[0].v;
var hRatio = h0/comp[1].h;
var vRatio = v0/comp[1].v;
var ratio = YCbCrImage.YCbCrSubsampleRatio.YCbCrSubsampleRatio444;
switch ((hRatio << 4) | vRatio){
case 0x11:
ratio = YCbCrImage.YCbCrSubsampleRatio.YCbCrSubsampleRatio444;
break;
case 0x12:
ratio = YCbCrImage.YCbCrSubsampleRatio.YCbCrSubsampleRatio440;
break;
case 0x21:
ratio = YCbCrImage.YCbCrSubsampleRatio.YCbCrSubsampleRatio422;
break;
case 0x22:
ratio = YCbCrImage.YCbCrSubsampleRatio.YCbCrSubsampleRatio420;
break;
case 0x41:
ratio = YCbCrImage.YCbCrSubsampleRatio.YCbCrSubsampleRatio411;
break;
case 0x42:
ratio = YCbCrImage.YCbCrSubsampleRatio.YCbCrSubsampleRatio410;
break;
}
var m = new YCbCrImage(8*h0*mxx, 8*v0*myy, ratio);
ycbcrImage = m.Subimage(0, 0, width, height);
}
}
public YCbCrImage Subimage(int x, int y, int w, int h)
{
var ret = new YCbCrImage{
w = w,
h = h,
pix_y = pix_y,
pix_cb = pix_cb,
pix_cr = pix_cr,
ratio = ratio,
y_stride = y_stride,
c_stride = c_stride,
y_offset = y*y_stride + x,
c_offset = y*c_stride + x
};
return ret;
}
//For Tracking Object From Camera
private void objectTrackingCam(Bitmap srcImage)
{
//Copy detected image to the new one
if (radioButton1.Checked)
{
Bitmap newImage = (Bitmap)RGBImage.Clone();
//Blob counter on the detected image
BlobCounter bc = new BlobCounter();
bc.MinHeight = 5;
bc.MinWidth = 5;
bc.FilterBlobs = true;
bc.ObjectsOrder = ObjectsOrder.Area;
bc.ProcessImage(newImage);
Rectangle[] rects = bc.GetObjectsRectangles();
foreach (Rectangle recs in rects)
{
if (rects.Length > 0)
{
Rectangle objectRect = rects[0]; //= recs;
Graphics graph = Graphics.FromImage(srcImage);
using (Pen pen = new Pen(Color.FromArgb(255, 0, 0), 2))
{
graph.DrawRectangle(pen, objectRect);
}
graph.Dispose();
}
}
//Draw tracked object on picture box
pictureBox3.Image = srcImage;
}
else if (radioButton2.Checked)
{
Bitmap newImage = (Bitmap)HSLImage.Clone();
//Blob counter on the detected image
BlobCounter bc = new BlobCounter();
bc.MinHeight = 5;
bc.MinWidth = 5;
bc.FilterBlobs = true;
bc.ObjectsOrder = ObjectsOrder.Area;
bc.ProcessImage(newImage);
Rectangle[] rects = bc.GetObjectsRectangles();
foreach (Rectangle recs in rects)
{
if (rects.Length > 0)
{
Rectangle objectRect = rects[0]; //= recs;
Graphics graph = Graphics.FromImage(srcImage);
using (Pen pen = new Pen(Color.FromArgb(255, 0, 0), 2))
{
graph.DrawRectangle(pen, objectRect);
}
graph.Dispose();
}
}
//Draw tracked object on picture box
pictureBox3.Image = srcImage;
}
else if (radioButton3.Checked)
{
Bitmap newImage = (Bitmap)YCbCrImage.Clone();
//Blob counter on the detected image
BlobCounter bc = new BlobCounter();
bc.MinHeight = 5;
bc.MinWidth = 5;
bc.FilterBlobs = true;
bc.ObjectsOrder = ObjectsOrder.Area;
bc.ProcessImage(newImage);
Rectangle[] rects = bc.GetObjectsRectangles();
foreach (Rectangle recs in rects)
{
if (rects.Length > 0)
{
Rectangle objectRect = rects[0]; //= recs;
Graphics graph = Graphics.FromImage(srcImage);
using (Pen pen = new Pen(Color.FromArgb(255, 0, 0), 2))
{
graph.DrawRectangle(pen, objectRect);
}
graph.Dispose();
}
}
//Draw tracked object on picture box
pictureBox3.Image = srcImage;
}
}
