public void TestArrays()
{
string imgfn = "test-c3.png";
// load Bytearray
Bytearray ba = new Bytearray(1, 1);
ImgIo.read_image_gray(ba, imgfn);
OcrRoutine.Invert(ba);
//NarrayUtil.Sub((byte)255, image);
byte[] bytes1 = ba.To1DArray();
NarrayShow.ShowConsole(ba);
StdInput linput1 = new StdInput(ba);
Console.WriteLine();
// load StdInput
Bitmap bitmap = ImgIo.LoadBitmapFromFile(imgfn);
StdInput linput2 = StdInput.FromBitmap(bitmap);
//NarrayShow.ShowConsole(linput2);
// test convert
Floatarray fa = linput2.ToFloatarray();
StdInput linput3 = new StdInput(fa);
Console.WriteLine("Arrays is identical? {0}", Equals(linput1.GetDataBuffer(), linput2.GetDataBuffer()));
Console.WriteLine("Arrays is identical? {0}", Equals(linput2.GetDataBuffer(), linput3.GetDataBuffer()));
}
public void TestRowDataset()
{
DRandomizer.Default.init_drand(DateTime.Now.Millisecond);
// load Mnist datasource
MnistDatasource mds = new MnistDatasource();
mds.LoadFromFile(mnistFileNamePrefix);
// convert mnist to RowDataset8
RowDataset8 ds8 = MnistDatasetConvert.GetRowDataset8(mds, classes);
// show random sample to console
Floatarray fa = new Floatarray();
int isample = (int)DRandomizer.Default.drand(ds8.nSamples(), 0);
ds8.Input(fa, isample);
Console.WriteLine("Char is '{0}'", (char)ds8.Cls(isample));
NarrayShow.ShowConsole(fa);
// compare random float sample and original mnist
StdInput inp1 = new StdInput(mds.ImagesData[isample], mds.ImgHeight, mds.ImgWidth);
StdInput inp2 = new StdInput(fa);
Console.WriteLine("Arrays is identical? {0}", Equals(inp1.GetDataBuffer(), inp2.GetDataBuffer()));
// save RowDataset8 to file
Console.WriteLine("Saving {0} samples..", ds8.nSamples());
ds8.Save(mnistFileNamePrefix + dsExt);
// load RowDataset8 from file
RowDataset8 ds = new RowDataset8();
ds.Load(mnistFileNamePrefix + dsExt);
Console.WriteLine("Loaded {0} samples", ds.nSamples());
}
