private static XMLAnnotation createBoxLabelFileFromJson(JsonFile jsonFile, Bitmap bitmap)
{
XMLAnnotation annot = new XMLAnnotation(jsonFile.getFilename(), bitmap.Width, bitmap.Height, 1);
List <Region> regions = jsonFile.getRegions();
foreach (Region r in regions)
{
int xMin = bitmap.Width, yMin = bitmap.Height, xMax = 0, yMax = 0;
foreach (Point p in r.getPoints())
{
if (p.X < xMin)
{
xMin = p.X;
}
if (p.X > xMax)
{
xMax = p.X;
}
if (p.Y < yMin)
{
yMin = p.Y;
}
if (p.Y > yMax)
{
yMax = p.Y;
}
}
annot.addBox(r.getKlasse(), xMin, yMin, xMax, yMax);
}
return(annot);
}
public static void createBoxesFromJson(string sourceImagePath, string sourceLabelFileDirectory, string targetImageDirectory, string targetAnnotationDirectory,
double maxRot = 360, int maxShiftHor = -1, int maxShiftVer = -1, int sampleCount = 30)
{
JSON_Reader labelFile = new JSON_Reader(Directory.GetFiles(sourceLabelFileDirectory)[0]);
string[] filePaths = Directory.GetFiles(sourceImagePath);
int currentImageCount = 0;
Image currentImage = Image.FromFile(filePaths[currentImageCount]);
String targetXMLDirectory = Path.Combine(targetAnnotationDirectory, "xmls");
List <String> labels = new List <string>();
StreamWriter trainvalFile = new StreamWriter(Path.Combine(targetAnnotationDirectory, "trainval.txt"), false);
StreamWriter label_mapFile = new StreamWriter(Path.Combine(targetAnnotationDirectory, "label_map.pbtxt"), false);
foreach (JsonFile file in labelFile.getFiles())
{
foreach (Region r in file.getRegions())
{
labels.Add(r.getKlasse());
}
Console.Write(file.getFilename() + ": ");
Random rnd = new Random();
Bitmap currentBitmap = (Bitmap)Bitmap.FromFile(Path.Combine(sourceImagePath, file.getFilename()));
//currentBitmap.Save(Path.Combine(targetImageDirectory, file.getFilename()), ImageFormat.Jpeg);
for (int i = 0; i < sampleCount; i++)
{
float angle = (float)(rnd.Next(-50, 50) * maxRot / 100.0);
int shift_x = (int)(rnd.Next(-50, 50) * maxShiftVer / 100);
int shift_y = (int)(rnd.Next(-50, 50) * maxShiftHor / 100);
Bitmap changed = changeImage(currentBitmap, angle, shift_x, shift_y);
string fileName = generateFileName(file.getFilename(), i);
String newFilePath = Path.Combine(targetImageDirectory, fileName);
changed.Save(newFilePath, ImageFormat.Jpeg);
JsonFile changedFile = file.getChanged(newFilePath, angle, shift_x, shift_y);
XMLAnnotation changedLabelFile = createBoxLabelFileFromJson(changedFile, changed);
changedLabelFile.save(targetXMLDirectory);
trainvalFile.WriteLine(Path.GetFileNameWithoutExtension(fileName));
changed.Dispose();
Console.Write("#");
}
Console.WriteLine();
currentBitmap.Dispose();
}
int id = 1;
foreach (String label in labels.Distinct())
{
label_mapFile.WriteLine("item {");
label_mapFile.WriteLine(" id: " + id);
label_mapFile.WriteLine(" name: \'" + label + "\'");
label_mapFile.WriteLine("}");
label_mapFile.WriteLine("");
id++;
}
trainvalFile.Dispose();
label_mapFile.Dispose();
}