/// <summary>
/// Одновременное считывание и обработка кадра видеопотока
/// </summary>
/// <param name="sWTVideoTextDetection">Детектор текста</param>
/// <param name="frameLoader">Загрузчик кадра</param>
/// <param name="keyFrameIOInformation">Информация об извлекаемом кадре</param>
/// <param name="videoFileName">Имя видеофайла</param>
/// <param name="threadsNumber">Число потоков для выделения текста</param>
/// <returns></returns>
public async static Task LoadDetectTextVideo(SWTVideoTextDetection sWTVideoTextDetection, FrameLoader frameLoader,
List<KeyFrameIOInformation> keyFrameIOInformation, string videoFileName, int threadsNumber)
{
try
{
if (sWTVideoTextDetection == null)
throw new ArgumentNullException("Null sWTVideoTextDetection in LoadDetectTextVideo");
if (frameLoader == null)
throw new ArgumentNullException("Null frameLoader in LoadDetectTextVideo");
if (keyFrameIOInformation == null)
throw new ArgumentNullException("Null keyFrameIOInformation in LoadDetectTextVideo");
if (videoFileName == null)
throw new ArgumentNullException("Null videoFileName in LoadDetectTextVideo");
for (int i = 0; i < keyFrameIOInformation.Count; i++)
{
GreyVideoFrame frame = await frameLoader.LoadFrameAsync(videoFileName, keyFrameIOInformation[i]);
await sWTVideoTextDetection.DetectText(frame, threadsNumber);
FrameWasProcessedEvent(frame);
}
}
catch (Exception exception)
{
throw exception;
}
}
/// <summary>
/// Загрузка единичного кадра видео
/// </summary>
private async void LoadVideoFrameFunction()
{
try
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.Filter = "JPEG Image (.jpg)|*.jpg";
dialog.ShowDialog();
FrameSizeWindow frameSizeWindow = FrameSizeWindow.InitializeFrameSizeWindow();
frameSizeWindow.capitalText.Text = PARAMETERS_SETTING_STRING;
frameSizeWindow.ShowDialog();
FrameSizeViewModel frameSizeViewModel = (FrameSizeViewModel)frameSizeWindow.DataContext;
IOData ioData = new IOData() { FileName = dialog.FileName, FrameHeight = frameSizeViewModel.FrameHeight, FrameWidth = frameSizeViewModel.FrameWidth };
VideoLoader.frameLoadedEvent += this.LoadingFramesProcessing;
VideoLoader videoLoader = new VideoLoader();
FrameLoader frameLoader = new FrameLoader();
videoFrame = await frameLoader.LoadFrameAsync(ioData);
OkButtonWindow okButtonWindow = OkButtonWindow.InitializeOkButtonWindow();
okButtonWindow.textInformation.Text = LOAD_FRAME_SUCCESS_STRING;
okButtonWindow.capitalText.Text = LOAD_FRAME_STRING;
okButtonWindow.ShowDialog();
Bitmap bitmapFrame = new Bitmap(dialog.FileName);
BitmapImageConvertor bitmapImageConvertor = new Convertors.BitmapImageConvertor();
this.FrameSource = bitmapImageConvertor.BitmapToBitmapImage(bitmapFrame);
this.ProcessedFrameSource = null;
this.IsVideoFrameTabSelected = true;
this.IsProcessedVideoFramesTabSelected = false;
this.IsProcessedVideoFrameTabSelected = false;
this.IsVideoTabSelected = false;
}
catch (Exception exception)
{
ShowExceptionMessage(exception.Message);
}
}
/// <summary>
/// Выделение текста на ключевых кадрах видеоролика
/// </summary>
private async void DetectVideoTextFunction()
{
try
{
if (this.keyFrameIOInformation != null)
{
SWTVideoTextDetection SWTVideoTextDetection = new SWTVideoTextDetection(0.5);
FrameLoader frameLoader = new FrameLoader();
this.StartLoader(DETECT_TEXT_VIDEO_STRING);
LoadDetectTextVideoMediator.FrameWasProcessedEvent += this.AddProcessedFrameToBitmapArray;
await LoadDetectTextVideoMediator.LoadDetectTextVideo(SWTVideoTextDetection, frameLoader, this.keyFrameIOInformation, this.videoFileNameString, 4);
this.StopLoader();
}
else
{
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_STRING);
await SWTVideoTextDetection.DetectText(this.video, 4);
this.StopLoader();
}
OkButtonWindow okButtonWindow = OkButtonWindow.InitializeOkButtonWindow();
okButtonWindow.capitalText.Text = VIDEO_PROCESS_STRING;
okButtonWindow.textInformation.Text = VIDEO_PROCESS_SUCCESS_STRING;
okButtonWindow.ShowDialog();
if (this.keyFrameIOInformation == null)
{
this.StartLoader(PROCESS_DATA_FOR_OUTPUT_STRING);
this.CreateBitmapsFromProcessedVideoFrames();
this.StopLoader();
}
this.InitializeProcessedVideoFramesGallery();
this.IsVideoFrameTabSelected = false;
this.IsProcessedVideoFramesTabSelected = true;
this.IsProcessedVideoFrameTabSelected = false;
this.IsVideoTabSelected = false;
}
catch (Exception exception)
{
this.StopLoader();
ShowExceptionMessage(exception.Message);
}
}