FinderPatternFinder class

This class attempts to find finder patterns in a QR Code. Finder patterns are the square markers at three corners of a QR Code.

This class is thread-safe but not reentrant. Each thread must allocate its own object.

@author Sean Owen

Implementers

Constructors

FinderPatternFinder(BitMatrix _image, [ResultPointCallback? _resultPointCallback])

hashCode → int: The hash code for this object.
no setterinherited
image → BitMatrix: no setter
possibleCenters → List<FinderPattern>: no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

clearCounts(List<int> counts) → void
find([DecodeHint? hints]) → FinderPatternInfo
handlePossibleCenter(List<int> stateCount, int i, int j, [bool pureBarcode = false]) → bool: This is called when a horizontal scan finds a possible alignment pattern. It will cross check with a vertical scan, and if successful, will, ah, cross-cross-check with another horizontal scan. This is needed primarily to locate the real horizontal center of the pattern in cases of extreme skew. And then we cross-cross-cross check with another diagonal scan.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
shiftCounts2(List<int> stateCount) → void
toString() → String: A string representation of this object.
inherited

doClearCounts(List<int> counts) → void
doShiftCounts2(List<int> stateCount) → void
foundPatternCross(List<int> stateCount) → bool: @param stateCount count of black/white/black/white/black pixels just read @return true iff the proportions of the counts is close enough to the 1/1/3/1/1 ratios used by finder patterns to be considered a match
foundPatternDiagonal(List<int> stateCount) → bool: @param stateCount count of black/white/black/white/black pixels just read @return true iff the proportions of the counts is close enough to the 1/1/3/1/1 ratios used by finder patterns to be considered a match