private void SplitImageAdditionalThread(object parameter)
{
SplitImageThreadParameter input = parameter as SplitImageThreadParameter;
if (input == null)
{
throw new ArgumentException("Неправильный формат потока");
}
int fragmentSize = RecognitionParameters.RecognitionFragmentSize;
var image = input.Image;
var regions = input.ResultRegions;
var samples = input.ResultSamples;
int XCount = image.Width / fragmentSize;
int YCount = image.Height / fragmentSize;
if (XCount * fragmentSize < image.Width)
{
for (int y = 0; (y < YCount) && (!isRecognizingAborted); ++y)
{
int fromX = image.Width - fragmentSize;
int fromY = y * fragmentSize;
int toX = image.Width;
int toY = fromY + fragmentSize;
TextureSample sample = null;
try
{
var imageData = image.GetGrayData(fromX, fromY, toX, toY);
sample = new TextureSample(imageData, false);
}
catch (Exception ex)
{
if (MessageBox.Show("Возникла ошибка. Продолжать?\n" + ex.Message, "Внимание", MessageBoxButtons.YesNo) == DialogResult.No)
{
isRecognizingAborted = true;
}
else
{
continue;
}
}
lock ((regions as ICollection).SyncRoot)
{
regions.Add(new Rectangle(fromX, fromY, fragmentSize, fragmentSize));
samples.Add(sample);
}
}
}
if (YCount * fragmentSize < image.Height)
{
for (int x = 0; (x < XCount) && (!isRecognizingAborted); ++x)
{
int fromX = x * fragmentSize;
int fromY = image.Height - fragmentSize;
int toX = fromX + fragmentSize;
int toY = image.Height;
TextureSample sample = null;
try
{
var imageData = image.GetGrayData(fromX, fromY, toX, toY);
sample = new TextureSample(imageData, false);
}
catch (Exception ex)
{
if (MessageBox.Show("Возникла ошибка. Продолжать?\n" + ex.Message, "Внимание", MessageBoxButtons.YesNo) == DialogResult.No)
{
isRecognizingAborted = true;
}
else
{
continue;
}
}
lock ((regions as ICollection).SyncRoot)
{
regions.Add(new Rectangle(fromX, fromY, fragmentSize, fragmentSize));
samples.Add(sample);
}
}
}
if ((XCount * fragmentSize < image.Width) || (YCount * fragmentSize < image.Height) && (!isRecognizingAborted))
{
int fromX = image.Width - fragmentSize;
int fromY = image.Height - fragmentSize;
int toX = image.Width;
int toY = image.Height;
TextureSample sample = null;
try
{
var imageData = image.GetGrayData(fromX, fromY, toX, toY);
sample = new TextureSample(imageData, false);
}
catch (Exception ex)
{
if (MessageBox.Show("Возникла ошибка. Продолжать?\n" + ex.Message, "Внимание", MessageBoxButtons.YesNo) == DialogResult.No)
{
isRecognizingAborted = true;
}
}
lock ((regions as ICollection).SyncRoot)
{
regions.Add(new Rectangle(fromX, fromY, fragmentSize, fragmentSize));
samples.Add(sample);
}
}
input.ResetEvent.Set();
}
private void SplitImage(SimpleImage image, List<TextureSample> samples, List<Rectangle> regions)
{
int YCount = image.Height / RecognitionParameters.RecognitionFragmentSize;
int threadCount = Math.Min(YCount, Environment.ProcessorCount * 2);
int threadPart = YCount / threadCount;
var resetEvents = new ManualResetEvent[threadCount + 1];
var threadParameters = new SplitImageThreadParameter[threadCount + 1];
for (int i = 0; i < threadCount; ++i)
{
resetEvents[i] = new ManualResetEvent(false);
threadParameters[i] = new SplitImageThreadParameter(
image, threadPart * i, ((i + 1) < threadCount) ? (threadPart * (i + 1)) : (YCount),
regions, samples, resetEvents[i]);
ThreadPool.QueueUserWorkItem(new WaitCallback(SplitImageThread), threadParameters[i]);
}
resetEvents[threadCount] = new ManualResetEvent(false);
threadParameters[threadCount] = new SplitImageThreadParameter(
image, 0, 0, regions, samples, resetEvents[threadCount]);
ThreadPool.QueueUserWorkItem(new WaitCallback(SplitImageAdditionalThread), threadParameters[threadCount]);
WaitHandle.WaitAll(resetEvents);
}
