Package com.itextpdf.barcodes.qrcode
Class MaskUtil
- java.lang.Object
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- com.itextpdf.barcodes.qrcode.MaskUtil
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final class MaskUtil extends java.lang.Object
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Constructor Summary
Constructors Modifier Constructor Description private
MaskUtil()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static int
applyMaskPenaltyRule1(ByteMatrix matrix)
Apply mask penalty rule 1 and return the penalty.private static int
applyMaskPenaltyRule1Internal(ByteMatrix matrix, boolean isHorizontal)
static int
applyMaskPenaltyRule2(ByteMatrix matrix)
Apply mask penalty rule 2 and return the penalty.static int
applyMaskPenaltyRule3(ByteMatrix matrix)
Apply mask penalty rule 3 and return the penalty.static int
applyMaskPenaltyRule4(ByteMatrix matrix)
Apply mask penalty rule 4 and return the penalty.static boolean
getDataMaskBit(int maskPattern, int x, int y)
Return the mask bit for "getMaskPattern" at "x" and "y".
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Method Detail
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applyMaskPenaltyRule1
public 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
- ByteMatrix to apply the penalty rule to- Returns:
- the rule 1 penalty
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applyMaskPenaltyRule2
public 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.- Parameters:
matrix
- ByteMatrix to apply the penalty rule to- Returns:
- the rule 2 penalty
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applyMaskPenaltyRule3
public static int applyMaskPenaltyRule3(ByteMatrix matrix)
Apply mask penalty rule 3 and return the penalty. Find consecutive cells of 00001011101 or 10111010000, and give penalty to them. If we find patterns like 000010111010000, we give penalties twice (i.e. 40 * 2).- Parameters:
matrix
- ByteMatrix to apply the penalty rule to- Returns:
- the rule 3 penalty
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applyMaskPenaltyRule4
public 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. Examples: - 0% => 100 - 40% => 20 - 45% => 10 - 50% => 0 - 55% => 10 - 55% => 20 - 100% => 100- Parameters:
matrix
- Bytematrix to apply the rule to- Returns:
- the rule 4 penalty
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getDataMaskBit
public 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
- masking pattern to usex
- width coordiantey
- height-coordinate- Returns:
- the mask bit at that position
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applyMaskPenaltyRule1Internal
private static int applyMaskPenaltyRule1Internal(ByteMatrix matrix, boolean isHorizontal)
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