/// <summary>
/// process ndwi image and extract streams
/// </summary>
static void StreamExtractionTest4LargeImage_BatchProcess()
{
string intputDirectoryName = @"~\StreamExtraction\output_ndwi\";
string[] files = System.IO.Directory.GetFiles(intputDirectoryName);
for (int i = 0; i < files.Length; i++)
{
if (System.IO.Path.GetExtension(files[i]) == ".img" && files[i].Contains("normalized_ratio_blue2_nir8"))
{
Console.WriteLine("-------------------------------------------------");
Console.WriteLine("start process: {0}", files[i]);
//process ndwi image
StreamExtraction se = new StreamExtraction(files[i]);
se.ProcessLargeImage1Spectral2Edge(1.25f, EdgeDetector.Canny, 20, 40, 5, 7, 500, 1.10f, 5, 10, 1.45f);
Console.WriteLine("--------------------END--------------------------");
}
}
}
//only extract large streams
static void ExtractLargeStreams(string inputFileName)
{
StreamExtraction se = new StreamExtraction(inputFileName);
string outputFileName = (System.IO.Path.GetFileNameWithoutExtension(inputFileName).Split('-'))[0];
// string path = System.IO.Path.GetDirectoryName(inputFileName) + "\\";
string path = @"~\StreamExtraction\multioutput\watermask\";
//increase this threshold for extracting lakes ~1.55
//for streams, usually ~1.25; change for each strip
float globalThreshold = 1.25f;
string gt = Convert.ToString(globalThreshold).Split('.')[0] + Convert.ToString(globalThreshold).Split('.')[1];
//increase this threshold for extracting lakes, ~5000, something very large
//for streams, usually ~500, change for each strip
int sizeThrshold = 500;
string outputLargeRiverFileName_withoutFilter = path + outputFileName + "_" + Convert.ToString(gt) + "_" + Convert.ToString(sizeThrshold) + "_watermask.img";
se.ExtractLargeStreams(globalThreshold, sizeThrshold, outputLargeRiverFileName_withoutFilter);
GC.Collect();
GC.WaitForPendingFinalizers();
}
