private static void threat_classifier(string datacfg, string cfgfile, string weightfile, int camIndex, string filename)
{
float threat = 0;
float roll = .2f;
Console.Write($"Classifier Demo\n");
Network net = Parser.parse_network_cfg(cfgfile);
if (string.IsNullOrEmpty(weightfile))
{
Parser.load_weights(net, weightfile);
}
Network.set_batch_network(net, 1);
var options = OptionList.read_data_cfg(datacfg);
Utils.Rand = new Random(2222222);
using (VideoCapture cap = !string.IsNullOrEmpty(filename)
? new VideoCapture(filename)
: new VideoCapture(camIndex))
{
int top = OptionList.option_find_int(options, "top", 1);
string nameList = OptionList.option_find_str(options, "names", "");
string[] names = Data.Data.get_labels(nameList);
int[] indexes = new int[top];
if (!cap.IsOpened)
{
Utils.Error("Couldn't connect to webcam.\n");
}
float fps = 0;
int i;
int count = 0;
while (true)
{
++count;
var sw = new Stopwatch();
sw.Start();
Image ini = LoadArgs.get_image_from_stream(cap);
if (ini.Data.Length == 0)
{
break;
}
Image inS = LoadArgs.resize_image(ini, net.W, net.H);
Image outo = ini;
int x1 = outo.W / 20;
int y1 = outo.H / 20;
int x2 = 2 * x1;
int y2 = outo.H - outo.H / 20;
int border = (int)(.01f * outo.H);
int h = y2 - y1 - 2 * border;
int w = x2 - x1 - 2 * border;
float[] predictions = Network.network_predict(net, inS.Data);
float currThreat = 0;
currThreat = predictions[0] * 0f +
predictions[1] * .6f +
predictions[2];
threat = roll * currThreat + (1 - roll) * threat;
LoadArgs.draw_box_width(outo, x2 + border, (int)(y1 + .02 * h), (int)(x2 + .5 * w), (int)(y1 + .02 * h + border), border, 0, 0,
0);
if (threat > .97)
{
LoadArgs.draw_box_width(outo, (int)(x2 + .5 * w + border),
(int)(y1 + .02 * h - 2 * border),
(int)(x2 + .5 * w + 6 * border),
(int)(y1 + .02 * h + 3 * border), 3 * border, 1, 0, 0);
}
LoadArgs.draw_box_width(outo, (int)(x2 + .5 * w + border),
(int)(y1 + .02 * h - 2 * border),
(int)(x2 + .5 * w + 6 * border),
(int)(y1 + .02 * h + 3 * border), (int)(.5 * border), 0, 0, 0);
LoadArgs.draw_box_width(outo, x2 + border, (int)(y1 + .42 * h), (int)(x2 + .5 * w), (int)(y1 + .42 * h + border), border, 0, 0,
0);
if (threat > .57)
{
LoadArgs.draw_box_width(outo, (int)(x2 + .5 * w + border),
(int)(y1 + .42 * h - 2 * border),
(int)(x2 + .5 * w + 6 * border),
(int)(y1 + .42 * h + 3 * border), 3 * border, 1, 1, 0);
}
LoadArgs.draw_box_width(outo, (int)(x2 + .5 * w + border),
(int)(y1 + .42 * h - 2 * border),
(int)(x2 + .5 * w + 6 * border),
(int)(y1 + .42 * h + 3 * border), (int)(.5 * border), 0, 0, 0);
LoadArgs.draw_box_width(outo, x1, y1, x2, y2, border, 0, 0, 0);
for (i = 0; i < threat * h; ++i)
{
float ratio = (float)i / h;
float r = (ratio < .5f) ? (2 * (ratio)) : 1;
float g = (ratio < .5f) ? 1 : 1 - 2 * (ratio - .5f);
LoadArgs.draw_box_width(outo, x1 + border, y2 - border - i, x2 - border, y2 - border - i, 1, r, g, 0);
}
Network.top_predictions(net, top, indexes);
string buff = $"/home/pjreddie/tmp/threat_{count:06}";
Console.Write($"\033[2J");
Console.Write($"\033[1;1H");
Console.Write($"\nFPS:%.0f\n", fps);
for (i = 0; i < top; ++i)
{
int index = indexes[i];
Console.Write($"%.1f%%: %s\n", predictions[index] * 100, names[index]);
}
LoadArgs.show_image(outo, "Threat");
CvInvoke.WaitKey(10);
sw.Stop();
float curr = 1000.0f / sw.ElapsedMilliseconds;
fps = .9f * fps + .1f * curr;
}
}
}