int Recognize(string imageFilePath)
{
int result = 0;
try
{
var imageFile = new Java.IO.File(Android.OS.Environment.ExternalStorageDirectory + imageFilePath);
Bitmap bitmap = BitmapFactory.DecodeFile(imageFile.AbsolutePath);
var info = bitmap.GetBitmapInfo();
var pixels = new int[info.Width * info.Height];
bitmap.GetPixels(pixels, 0, (int)info.Width, 0, 0, (int)info.Width, (int)info.Height);
float[] pixelsT = new float[pixels.Length];
for (int i = 0; i < pixels.Length; ++i)
{
int pix = pixels[i];
int b = pix & 0xff;
pixelsT[i] = 0xff - b;
}
InferenceInterface.Feed(INPUT_NAME, pixelsT, new long[] { INPUT_SIZE *INPUT_SIZE });
string[] outputNames = new string[] { OUTPUT_NAME };
InferenceInterface.Run(outputNames, false);
float[] outputs = new float[_numClasses.Value];
InferenceInterface.Fetch(OUTPUT_NAME, outputs);
result = Array.IndexOf(outputs, outputs.Max());
}
catch (Exception ex)
{
}
return(result);
}
public int?Initialize()
{
int?numClasses = null;
try
{
var graph = InferenceInterface.Graph();
var operation = graph?.Operation(OUTPUT_NAME);
var output = operation?.Output(0);
var shape = output?.Shape();
_numClasses = numClasses = (int)shape?.Size(1);
}
catch (Exception)
{
return(null);
}
return(numClasses);
}