public static void Process(bool useNative, uint[] pixels, int width, int height)
{
if (useNative)
{
TangraCore.LargeChunkDenoise(pixels, width, height);
}
else
{
ProcessManaged(pixels, width, height, 0, 255);
}
}
private void PrepareOsdArea(uint[] dataIn, uint[] dataOut, uint[] dataDebugNoLChD, int width, int height)
{
//DebugPrepareOsdArea(dataIn, dataOut, width, height);
//return;
// Split into fields only in the region where IOTA-VTI could be, Then threat as two separate images, and for each of them do:
// 1) Gaussian blur (small) BitmapFilter.LOW_PASS_FILTER_MATRIX
// 2) Sharpen BitmapFilter.SHARPEN_MATRIX
// 3) Binarize - get Average, all below change to 0, all above change to Max (256)
// 4) De-noise BitmapFilter.DENOISE_MATRIX
if (m_UseNativePreProcessing)
{
TangraCore.PrepareImageForOCR(dataIn, dataOut, width, height);
}
else
{
uint median = dataIn.Median();
for (int i = 0; i < dataIn.Length; i++)
{
int darkCorrectedValue = (int)dataIn[i] - (int)median;
if (darkCorrectedValue < 0)
{
darkCorrectedValue = 0;
}
dataIn[i] = (uint)darkCorrectedValue;
}
uint[] blurResult = BitmapFilter.GaussianBlur(dataIn, 8, width, height);
uint average = 128;
uint[] sharpenResult = BitmapFilter.Sharpen(blurResult, 8, width, height, out average);
// Binerize and Inverse
for (int i = 0; i < sharpenResult.Length; i++)
{
sharpenResult[i] = sharpenResult[i] > average ? (uint)0 : (uint)255;
}
uint[] denoised = BitmapFilter.Denoise(sharpenResult, 8, width, height, out average, false);
for (int i = 0; i < denoised.Length; i++)
{
dataOut[i] = denoised[i] < 127 ? (uint)0 : (uint)255;
}
Array.Copy(dataOut, dataDebugNoLChD, dataOut.Length);
LargeChunkDenoiser.Process(false, dataOut, width, height);
}
}
private void DebugPrepareOsdArea(uint[] dataIn, uint[] dataOut, int width, int height)
{
// NOTE: Because of different rounding in C++ and C# there may be a difference of "1" between pixels
uint[] nativeIn = new uint[dataIn.Length];
uint[] nativeOut = new uint[dataOut.Length];
uint nativeAverage = 0;
for (int i = 0; i < dataIn.Length; i++)
{
nativeIn[i] = dataIn[i];
}
uint median = dataIn.Median();
for (int i = 0; i < dataIn.Length; i++)
{
int darkCorrectedValue = (int)dataIn[i] - (int)median;
if (darkCorrectedValue < 0)
{
darkCorrectedValue = 0;
}
dataIn[i] = (uint)darkCorrectedValue;
}
TangraCore.PrepareImageForOCRSingleStep(nativeIn, nativeOut, width, height, 0, ref nativeAverage);
Trace.Assert(Math.Abs(median - nativeAverage) <= 1);
for (int i = 0; i < nativeOut.Length; i++)
{
Trace.Assert(Math.Abs(nativeOut[i] - dataIn[i]) <= 1);
}
for (int i = 0; i < dataIn.Length; i++)
{
nativeIn[i] = dataIn[i];
}
uint[] blurResult = BitmapFilter.GaussianBlur(dataIn, 8, width, height);
TangraCore.PrepareImageForOCRSingleStep(nativeIn, nativeOut, width, height, 1, ref nativeAverage);
for (int i = 0; i < nativeOut.Length; i++)
{
Trace.Assert(Math.Abs(nativeOut[i] - blurResult[i]) <= 1);
}
for (int i = 0; i < blurResult.Length; i++)
{
nativeIn[i] = blurResult[i];
}
uint average = 128;
uint[] sharpenResult = BitmapFilter.Sharpen(blurResult, 8, width, height, out average);
TangraCore.PrepareImageForOCRSingleStep(nativeIn, nativeOut, width, height, 2, ref nativeAverage);
Trace.Assert(Math.Abs(average - nativeAverage) <= 1);
for (int i = 0; i < nativeOut.Length; i++)
{
Trace.Assert(Math.Abs(nativeOut[i] - sharpenResult[i]) <= 1);
}
for (int i = 0; i < sharpenResult.Length; i++)
{
nativeIn[i] = sharpenResult[i];
}
TangraCore.PrepareImageForOCRSingleStep(nativeIn, nativeOut, width, height, 3, ref nativeAverage);
// Binerize and Inverse
for (int i = 0; i < sharpenResult.Length; i++)
{
sharpenResult[i] = sharpenResult[i] > average ? (uint)0 : (uint)255;
}
for (int i = 0; i < nativeOut.Length; i++)
{
Trace.Assert(Math.Abs(nativeOut[i] - sharpenResult[i]) <= 1);
}
for (int i = 0; i < sharpenResult.Length; i++)
{
nativeIn[i] = sharpenResult[i];
}
TangraCore.PrepareImageForOCRSingleStep(nativeIn, nativeOut, width, height, 4, ref nativeAverage);
uint[] denoised = BitmapFilter.Denoise(sharpenResult, 8, width, height, out average, false);
for (int i = 0; i < denoised.Length; i++)
{
Trace.Assert(Math.Abs(nativeOut[i] - denoised[i]) <= 1);
}
for (int i = 0; i < denoised.Length; i++)
{
nativeIn[i] = denoised[i];
}
TangraCore.PrepareImageForOCRSingleStep(nativeIn, nativeOut, width, height, 5, ref nativeAverage);
for (int i = 0; i < denoised.Length; i++)
{
dataOut[i] = denoised[i] < 127 ? (uint)0 : (uint)255;
}
for (int i = 0; i < denoised.Length; i++)
{
Trace.Assert(Math.Abs(nativeOut[i] - dataOut[i]) <= 1);
}
LargeChunkDenoiser.Process(false, dataOut, width, height);
LargeChunkDenoiser.Process(true, nativeOut, width, height);
for (int i = 0; i < dataOut.Length; i++)
{
Trace.Assert(Math.Abs(nativeOut[i] - dataOut[i]) <= 1);
}
for (int i = 0; i < nativeOut.Length; i++)
{
dataOut[i] = nativeOut[i];
}
}