/// <summary>
/// Сохранение одного кадра видео
/// </summary>
/// <param name="videoFrame"></param>
/// <param name="pen"></param>
/// <param name="saveFileName"></param>
public Task<bool> SaveVideoFrameAsync(GreyVideoFrame videoFrame, System.Drawing.Pen pen, string saveFileName)
{
try
{
if (videoFrame == null || videoFrame.Frame == null)
throw new ArgumentNullException("Null videoFrame");
if (saveFileName == null || saveFileName.Length == 0)
throw new ArgumentNullException("Null saveFileName");
if (pen == null)
throw new ArgumentNullException("Null pen");
return Task.Run(() =>
{
BitmapConvertor bitmapConvertor = new BitmapConvertor();
Bitmap bitmapFrame = bitmapConvertor.ToBitmap(videoFrame.Frame);
Draw.DrawTextBoundingBoxes(bitmapFrame, videoFrame.Frame.TextRegions, pen);
bitmapFrame.Save(saveFileName);
return true;
});
}
catch (Exception exception)
{
throw exception;
}
}
/// <summary>
/// Выделение текста на на единичном кадре видео
/// </summary>
private async void DetectVideoFrameTextFunction()
{
try
{
EvristicsWindow evristicsWindow = EvristicsWindow.InitializeEvristicsWindow();
evristicsWindow.capitalText.Text = PARAMETERS_SETTING_STRING;
evristicsWindow.ShowDialog();
AlgorithmParametersWindow algorithmParametersWindow = AlgorithmParametersWindow.InitializeAlgorithmParametersWindow();
algorithmParametersWindow.capitalText.Text = PARAMETERS_SETTING_STRING;
algorithmParametersWindow.ShowDialog();
EvristicsWindowViewModel evristicsWindowDataContext = (EvristicsWindowViewModel)evristicsWindow.DataContext;
AlgorithmParametersViewModel algorithmParametersWindowDataContext = (AlgorithmParametersViewModel)algorithmParametersWindow.DataContext;
SWTVideoTextDetection SWTVideoTextDetection = new SWTVideoTextDetection(evristicsWindowDataContext.VarienceAverageSWRation,
algorithmParametersWindowDataContext.GaussFilterSize, algorithmParametersWindowDataContext.GaussSigma, algorithmParametersWindowDataContext.CannyLowTreshold,
algorithmParametersWindowDataContext.CannyHighTreshold, evristicsWindowDataContext.AspectRatio, evristicsWindowDataContext.DiamiterSWRatio,
evristicsWindowDataContext.BbPixelsNumberMinRatio, evristicsWindowDataContext.BbPixelsNumberMaxRatio,
evristicsWindowDataContext.ImageRegionHeightRationMin, evristicsWindowDataContext.ImageRegionWidthRatioMin, evristicsWindowDataContext.PairsHeightRatio,
evristicsWindowDataContext.PairsIntensityRatio, evristicsWindowDataContext.PairsSWRatio, evristicsWindowDataContext.PairsWidthDistanceSqrRatio,
evristicsWindowDataContext.PairsOccupationRatio, evristicsWindowDataContext.MinLettersNumberInTextRegion,
evristicsWindowDataContext.MergeByDirectionAndChainEnds, evristicsWindowDataContext.UseAdaptiveSmoothing);
this.StartLoader(DETECT_TEXT_VIDEO_FRAME_STRING);
await SWTVideoTextDetection.DetectText(this.videoFrame, 4);
this.StopLoader();
OkButtonWindow okButtonWindow = OkButtonWindow.InitializeOkButtonWindow();
okButtonWindow.capitalText.Text = FRAME_PROCESS_STRING;
okButtonWindow.textInformation.Text = FRAME_PROCESS_SUCCESS_STRING;
okButtonWindow.ShowDialog();
BitmapConvertor bitmapConvertor = new BitmapConvertor();
Bitmap bitmapFrame = bitmapConvertor.ToBitmap(this.videoFrame.Frame);
Draw.DrawTextBoundingBoxes(bitmapFrame, this.videoFrame.Frame.TextRegions, new System.Drawing.Pen(System.Drawing.Color.Red, 2));
BitmapImageConvertor bitmapImageConvertor = new Convertors.BitmapImageConvertor();
this.ProcessedFrameSource = bitmapImageConvertor.BitmapToBitmapImage(bitmapFrame);
this.IsVideoFrameTabSelected = false;
this.IsProcessedVideoFramesTabSelected = false;
this.IsProcessedVideoFrameTabSelected = true;
this.IsVideoTabSelected = false;
}
catch (Exception exception)
{
this.StopLoader();
ShowExceptionMessage(exception.Message);
}
}
private void AddProcessedFrameToBitmapArray(GreyVideoFrame videoFrame)
{
try
{
if (this.processedVideoFramesBitmap == null)
this.processedVideoFramesBitmap = new List<BitmapImage>();
if (this.processedVideoFramesBitmapForSave == null)
this.processedVideoFramesBitmapForSave = new List<Bitmap>();
if (this.textRegionsDictionary == null)
this.textRegionsDictionary = new Dictionary<int, List<TextRegion>>();
this.textRegionsDictionary.Add(videoFrame.FrameNumber, videoFrame.Frame.TextRegions);
BitmapConvertor bitmapConvertor = new BitmapConvertor();
BitmapImageConvertor bitmapImageConvertor = new Convertors.BitmapImageConvertor();
Bitmap bitmapFrame = bitmapConvertor.ToBitmap(videoFrame.Frame);
Draw.DrawTextBoundingBoxes(bitmapFrame, videoFrame.Frame.TextRegions, new System.Drawing.Pen(System.Drawing.Color.Red, 2));
this.processedVideoFramesBitmapForSave.Add(bitmapFrame);
this.processedVideoFramesBitmap.Add(bitmapImageConvertor.BitmapToBitmapImage(bitmapFrame));
}
catch (Exception exception)
{
throw exception;
}
}
/// <summary>
/// Запись обработанных ключевых кадров видео в виде BitmapImage, отрисовка прямоугольников текстовых областей
/// </summary>
private void CreateBitmapsFromProcessedVideoFrames()
{
try
{
this.processedVideoFramesBitmap = new List<BitmapImage>();
BitmapConvertor bitmapConvertor = new BitmapConvertor();
BitmapImageConvertor bitmapImageConvertor = new Convertors.BitmapImageConvertor();
for (int i = 0; i < this.video.Frames.Count; i++)
{
Bitmap bitmapFrame = bitmapConvertor.ToBitmap(this.video.Frames[i].Frame);
Draw.DrawTextBoundingBoxes(bitmapFrame, this.video.Frames[i].Frame.TextRegions, new System.Drawing.Pen(System.Drawing.Color.Red, 2));
this.processedVideoFramesBitmap.Add(bitmapImageConvertor.BitmapToBitmapImage(bitmapFrame));
}
}
catch (Exception exception)
{
throw exception;
}
}