/// <summary>
/// Crops the images.
/// </summary>
/// <param name="pathAnnotationsIn">The path annotations in.</param>
/// <param name="pathImagesIn">The path images in.</param>
/// <param name="pathOut">The path out.</param>
/// <exception cref="ArgumentException">
/// Amount of annotation not equal to amount of images.Check train folder
/// or
/// There is no coordinates in annotation file
/// </exception>
public void CropImages(string pathAnnotationsIn, string pathImagesIn, string pathOut)
{
var annotations = Directory.GetFiles(pathAnnotationsIn);
var images = Directory.GetFiles(pathImagesIn);
if (annotations.Length != images.Length)
{
throw new ArgumentException("Amount of annotation not equal to amount of images.Check train folder");
}
var coords = new List <int>();
Directory.CreateDirectory(Constants.PRE_FOLDER_CROPPED);
int counter = 0;
for (int i = 0; i < annotations.Length; i++)
{
var annotationContent = File.ReadAllText(annotations[i]);
var image = new BitmapImage(new Uri(images[i], UriKind.RelativeOrAbsolute));
Regex regex = new Regex(Constants.PATERN_FOR_CROPPING);
foreach (Match match in regex.Matches(annotationContent))
{
coords.Clear();
var stringWithValues = match.Value;
Regex regexForDigit = new Regex(@"\d+");
foreach (Match digitMatch in regexForDigit.Matches(stringWithValues))
{
coords.Add(int.Parse(digitMatch.Value));
}
if (coords.Count < 4)
{
throw new ArgumentException("There is no coordinates in annotation file");
}
var frame = new Int32Rect(coords[0], coords[1], coords[2] - coords[0], coords[3] - coords[1]);
var croppedImage = CropImage(image, frame);
croppedImage.SaveImage($"{pathOut}\\{counter}.png");
counter++;
var reflectedImage = new TransformedBitmap(croppedImage, new ScaleTransform {
ScaleX = -1
});
reflectedImage.SaveImage($"{pathOut}\\{counter}.png");
counter++;
}
}
}
