public int GetLastFrameNoDigitPosition(IotaVtiOcrProcessor stateManager)
{
for (int i = IotaVtiOcrProcessor.FIRST_FRAME_NO_DIGIT_POSITIONS; i <= IotaVtiOcrProcessor.MAX_POSITIONS; i++)
{
uint[] pixels = stateManager.GetBlockAtPosition(Image, i, IsOddField);
int nuberSignalPixels = pixels.Count(x => x < 127);
if (stateManager.IsMatchingSignature(nuberSignalPixels) /* Matches to blank block */)
{
return(i);
}
}
return(-1);
}
private static char OcrBlock(uint[] fieldPixels, IotaVtiOcrProcessor stateManager, int blockIndex, bool isOddField)
{
uint[] block = stateManager.GetBlockAtPosition(fieldPixels, blockIndex, isOddField);
int[] diffSignatures = new int[10];
int[] diffDigits = new int[10];
diffSignatures[0] = GetDiffSignature(block, stateManager.ZeroDigitPattern);
diffDigits[0] = 0;
diffSignatures[1] = GetDiffSignature(block, stateManager.OneDigitPattern);
diffDigits[1] = 1;
diffSignatures[2] = GetDiffSignature(block, stateManager.TwoDigitPattern);
diffDigits[2] = 2;
diffSignatures[3] = GetDiffSignature(block, stateManager.ThreeDigitPattern);
diffDigits[3] = 3;
diffSignatures[4] = GetDiffSignature(block, stateManager.FourDigitPattern);
diffDigits[4] = 4;
diffSignatures[5] = GetDiffSignature(block, stateManager.FiveDigitPattern);
diffDigits[5] = 5;
diffSignatures[6] = GetDiffSignature(block, stateManager.SixDigitPattern);
diffDigits[6] = 6;
diffSignatures[7] = GetDiffSignature(block, stateManager.SevenDigitPattern);
diffDigits[7] = 7;
diffSignatures[8] = GetDiffSignature(block, stateManager.EightDigitPattern);
diffDigits[8] = 8;
diffSignatures[9] = GetDiffSignature(block, stateManager.NineDigitPattern);
diffDigits[9] = 9;
Array.Sort(diffSignatures, diffDigits);
if (stateManager.IsMatchingSignature(diffSignatures[0]))
{
if (diffDigits[0] == 8 || diffDigits[0] == 6 || diffDigits[0] == 9)
{
// If we matched to a 6, 8 or 9, then do additional check as those three characters are too similar
}
return(diffDigits[0].ToString()[0]);
}
return(' ');
}
public void PrepareLastTwoDigitsFromTheFrameNumber(IotaVtiOcrProcessor stateManager)
{
LastFrameNoDigit = stateManager.GetBlockAtPosition(Image, stateManager.LastFrameNoDigitPosition, IsOddField);
SecondLastFrameNoDigit = stateManager.GetBlockAtPosition(Image, stateManager.LastFrameNoDigitPosition - 1, IsOddField);
}