public void Run(string[] args, string tutRoot)
{
Help();
// Default arguments
// Image digits.png is of dimension 2000x1000
string imageName = $"{tutRoot}data\\digits.png";
string argDivideWith = "10";
string imageReadType = "";
if (args.Length == 2)
{
imageName = args[0];
argDivideWith = args[1];
imageReadType = "G";
}
else if (args.Length == 3)
{
imageName = args[0];
argDivideWith = args[1];
imageReadType = args[2];
}
Mat I, J;
try
{
if (imageReadType == "G")
{
I = new Mat(imageName, ImreadModes.GrayScale);
}
else
{
I = new Mat(imageName, ImreadModes.Color);
}
}
catch (FileNotFoundException e)
{
Console.WriteLine($"The image {imageName} could not be found.");
Cv2.WaitKey();
return;
}
if (I.Empty())
{
Console.WriteLine($"The image {imageName} could not be loaded.");
Cv2.WaitKey();
return;
}
// [divideWith] Create a look-up table based on the divideWith value
int divideWith = int.Parse(argDivideWith);
if (divideWith == 0)
{
Console.WriteLine("Invalid number entered for dividing.");
Cv2.WaitKey();
return;
}
byte[] table = new byte[256];
for (int i = 0; i < 256; ++i)
{
table[i] = (byte)(divideWith * (i / divideWith));
}
// [divideWith] ================================================
const int times = 100;
double t = Cv2.GetTickCount();
for (int i = 0; i < times; ++i)
{
Mat clone_i = I.Clone();
J = ImageScanner.ScanImageAndReduceC(clone_i, table);
}
t = 1000 * (Cv2.GetTickCount() - t) / Cv2.GetTickFrequency();
t /= times;
Console.WriteLine($"\nTime of reducing with the C " +
$"operator [] (averaged for {times} runs): {t} milliseconds.");
t = Cv2.GetTickCount();
for (int i = 0; i < times; ++i)
{
Mat clone_i = I.Clone();
J = ImageScanner.ScanImageAndReduceForEach(clone_i, table);
}
t = 1000 * (Cv2.GetTickCount() - t) / Cv2.GetTickFrequency();
t /= times;
Console.WriteLine($"Time of reducing with foreach " +
$"(averaged for {times} runs): {t} milliseconds.");
t = Cv2.GetTickCount();
for (int i = 0; i < times; ++i)
{
Mat clone_i = I.Clone();
ImageScanner.ScanImageAndReduceRandomAccess(clone_i, table);
}
t = 1000 * (Cv2.GetTickCount() - t) / Cv2.GetTickFrequency();
t /= times;
Console.WriteLine($"Time of reducing with the on-the-fly address generation - " +
$"at function (averaged for {times} runs): {t} milliseconds.");
t = Cv2.GetTickCount();
for (int i = 0; i < times; ++i)
{
//! [table-use]
J = I.LUT(table);
}
//! [table-use]
t = 1000 * (Cv2.GetTickCount() - t) / Cv2.GetTickFrequency();
t /= times;
Console.WriteLine($"Time of reducing with the LUT function " +
$"(averaged for {times} runs): {t} milliseconds.");
Cv2.WaitKey();
}