/// <summary>
/// Вычисление градиентной карты (многопоточная)
/// </summary>
/// <param name="image">Изображение</param>
/// <param name="threadsNumber">Число потоков</param>
/// <returns></returns>
public override GreyImage Apply(GreyImage image, int threadsNumber)
{
try
{
if (image == null)
throw new ArgumentNullException("Null image in Apply");
if (threadsNumber <= 0)
throw new ArgumentException("Error threadsNumber in Apply");
this._gradientXMap = new GreyImage(image.Width, image.Height);
this._gradientYMap = new GreyImage(image.Width, image.Height);
this.Threads = new List<Thread>();
int deltaI = image.Height / threadsNumber;
int lowIndexI = 0;
int highIndexI = lowIndexI + deltaI;
for (int i = 0; i < threadsNumber; i++)
{
if (i == threadsNumber - 1)
highIndexI = image.Height - 1;
MatrixFilterData matrixFilterData = new ThreadData.MatrixFilterData(image, lowIndexI, highIndexI, 0, image.Width - 1);
Thread thread = new Thread(new ParameterizedThreadStart(this.ApplyThread));
this.Threads.Add(thread);
this.Threads[i].Start(matrixFilterData);
lowIndexI = highIndexI;
highIndexI += deltaI;
}
WaitForThreads();
return image;
}
catch (Exception exception)
{
throw exception;
}
}
/// <summary>
/// Применение фильтра Гаусса к серому изображению (многопоточная)
/// </summary>
/// <param name="image">Серое изображение</param>
/// <param name="threadsNumber">Число потоков</param>
public override GreyImage Apply(GreyImage image, int threadsNumber)
{
try
{
if (image == null)
throw new ArgumentNullException("Null image in Apply");
if (image.Height < this.Size)
throw new ArgumentException("Image height must be >= filter size");
if (image.Width < this.Size)
throw new ArgumentException("Image width must be >= filter size");
if (threadsNumber <= 0)
throw new ArgumentException("Error threadsNumber in Apply");
this._copyImage = (GreyImage)image.Copy();
if (this._copyImage == null)
throw new NullReferenceException("Null copy image in Apply");
this.Threads = new List<Thread>();
int deltaI = image.Height / threadsNumber;
int filterSize = this.Size;
int lowIndex = filterSize / 2;
int lowIndexI = lowIndex;
int highIndexI = lowIndexI + deltaI;
int highIndexJ = image.Width - lowIndex;
for (int i = 0; i < threadsNumber; i++)
{
if (i == threadsNumber - 1)
highIndexI = image.Height - lowIndex;
MatrixFilterData matrixFilterData = new ThreadData.MatrixFilterData(image, lowIndexI, highIndexI, lowIndex, highIndexJ);
Thread thread = new Thread(new ParameterizedThreadStart(this.ApplyThread));
this.Threads.Add(thread);
this.Threads[i].Start(matrixFilterData);
lowIndexI = highIndexI;
highIndexI += deltaI;
}
WaitForThreads();
return this._copyImage;
}
catch (Exception exception)
{
throw exception;
}
}
