Method Detail

• applyMaskPenaltyRule1

  static int applyMaskPenaltyRule1(ByteMatrix matrix)

  Apply mask penalty rule 1 and return the penalty. Find repetitive cells with the same color and give penalty to them. Example: 00000 or 11111.

  Parameters:

  matrix - the byte matrix

  Returns:

  the penalty

• applyMaskPenaltyRule2

  static int applyMaskPenaltyRule2(ByteMatrix matrix)

  Apply mask penalty rule 2 and return the penalty. Find 2x2 blocks with the same color and give penalty to them. This is actually equivalent to the spec's rule, which is to find MxN blocks and give a penalty proportional to (M-1)x(N-1), because this is the number of 2x2 blocks inside such a block.

  Parameters:

  matrix - the byte matrix

  Returns:

  the penalty

• applyMaskPenaltyRule3

  static int applyMaskPenaltyRule3(ByteMatrix matrix)

  Apply mask penalty rule 3 and return the penalty. Find consecutive runs of 1:1:3:1:1:4 starting with black, or 4:1:1:3:1:1 starting with white, and give penalty to them. If we find patterns like 000010111010000, we give penalty once.

  Parameters:

  matrix - the byte matrix

  Returns:

  the penalty

• applyMaskPenaltyRule4

  static int applyMaskPenaltyRule4(ByteMatrix matrix)

  Apply mask penalty rule 4 and return the penalty. Calculate the ratio of dark cells and give penalty if the ratio is far from 50%. It gives 10 penalty for 5% distance.

  Parameters:

  matrix - the byte matrix

  Returns:

  the penalty

• getDataMaskBit

  static boolean getDataMaskBit(int maskPattern,
                                int x,
                                int y)

  Return the mask bit for "getMaskPattern" at "x" and "y". See 8.8 of JISX0510:2004 for mask pattern conditions.

  Parameters:

  maskPattern - the mask pattern

  x - the x coordinate

  y - the y coordinate

  Returns:

  the mask bit