public DetectionResult(BarcodeMetadata metadata, BoundingBox box) { Metadata = metadata; Box = box; ColumnCount = metadata.ColumnCount; DetectionResultColumns = new DetectionResultColumn[ColumnCount + 2]; }
public DetectionResult(BarcodeMetadata metadata, BoundingBox box) { this.Metadata = metadata; this.Box = box; this.ColumnCount = metadata.ColumnCount; this.DetectionResultColumns = new DetectionResultColumn[ColumnCount + 2]; }
/// <summary> /// Gets the row indicator column. /// </summary> /// <returns>The row indicator column.</returns> /// <param name="image">Image.</param> /// <param name="boundingBox">Bounding box.</param> /// <param name="startPoint">Start point.</param> /// <param name="leftToRight">If set to <c>true</c> left to right.</param> /// <param name="minCodewordWidth">Minimum codeword width.</param> /// <param name="maxCodewordWidth">Max codeword width.</param> private static DetectionResultRowIndicatorColumn getRowIndicatorColumn(BitMatrix image, BoundingBox boundingBox, ResultPoint startPoint, bool leftToRight, int minCodewordWidth, int maxCodewordWidth) { DetectionResultRowIndicatorColumn rowIndicatorColumn = new DetectionResultRowIndicatorColumn(boundingBox, leftToRight); for (int i = 0; i < 2; i++) { int increment = i == 0 ? 1 : -1; int startColumn = (int) startPoint.X; for (int imageRow = (int) startPoint.Y; imageRow <= boundingBox.MaxY && imageRow >= boundingBox.MinY; imageRow += increment) { Codeword codeword = detectCodeword(image, 0, image.Width, leftToRight, startColumn, imageRow, minCodewordWidth, maxCodewordWidth); if (codeword != null) { rowIndicatorColumn.setCodeword(imageRow, codeword); if (leftToRight) { startColumn = codeword.StartX; } else { startColumn = codeword.EndX; } } } } return rowIndicatorColumn; }
/// <summary> /// Creates the specified box. /// </summary> /// <param name="box">The box.</param> /// <returns></returns> public static BoundingBox Create(BoundingBox box) { return new BoundingBox(box.image, box.TopLeft, box.BottomLeft, box.TopRight, box.BottomRight); }
/// <summary> /// Merge two Bounding Boxes, getting the left corners of left, and the right corners of right /// (Images should be the same) /// </summary> /// <param name="leftBox">Left.</param> /// <param name="rightBox">Right.</param> internal static BoundingBox merge(BoundingBox leftBox, BoundingBox rightBox) { if (leftBox == null) return rightBox; if (rightBox == null) return leftBox; return new BoundingBox(leftBox.image, leftBox.TopLeft, leftBox.BottomLeft, rightBox.TopRight, rightBox.BottomRight); }
/// <summary> /// Initializes a new instance of the <see cref="ZXing.PDF417.Internal.BoundingBox"/> class. /// </summary> /// <param name="box">Box.</param> public BoundingBox(BoundingBox box) : this(box.Image, box.TopLeft,box.BottomLeft, box.TopRight, box.BottomRight) { }
/// <summary> /// Merge two Bounding Boxes, getting the left corners of left, and the right corners of right /// (Images should be the same) /// </summary> /// <param name="left">Left.</param> /// <param name="right">Right.</param> internal static BoundingBox Merge(BoundingBox left, BoundingBox right) { if (left == null) return right; if (right == null) return left; return new BoundingBox(left.Image, left.TopLeft, left.BottomLeft, right.TopRight, right.BottomRight); }
// TODO convert this to a dictionary? Dictionary<imageRow, Codeword> ?? /// <summary> /// Initializes a new instance of the <see cref="ZXing.PDF417.Internal.DetectionResultColumn"/> class. /// </summary> /// <param name="box">The Bounding Box around the column (in the BitMatrix)</param> public DetectionResultColumn(BoundingBox box) { this.Box = BoundingBox.Create(box); this.Codewords = new Codeword[Box.MaxY - Box.MinY + 1]; }
/// <summary> /// Initializes a new instance of the <see cref="ZXing.PDF417.Internal.DetectionResultRowIndicatorColumn"/> class. /// </summary> /// <param name="box">Box.</param> /// <param name="isLeft">If set to <c>true</c> is left.</param> public DetectionResultRowIndicatorColumn(BoundingBox box, bool isLeft) : base(box) { this.IsLeft = isLeft; }
/// <summary> /// Decode the specified image, imageTopLeft, imageBottomLeft, imageTopRight, imageBottomRight, minCodewordWidth /// and maxCodewordWidth. /// TODO: don't pass in minCodewordWidth and maxCodewordWidth, pass in barcode columns for start and stop pattern /// columns. That way width can be deducted from the pattern column. /// This approach also allows to detect more details about the barcode, e.g. if a bar type (white or black) is wider /// than it should be. This can happen if the scanner used a bad blackpoint. /// </summary> /// <param name="image">Image.</param> /// <param name="imageTopLeft">Image top left.</param> /// <param name="imageBottomLeft">Image bottom left.</param> /// <param name="imageTopRight">Image top right.</param> /// <param name="imageBottomRight">Image bottom right.</param> /// <param name="minCodewordWidth">Minimum codeword width.</param> /// <param name="maxCodewordWidth">Max codeword width.</param> public static DecoderResult Decode(BitMatrix image, ResultPoint imageTopLeft, ResultPoint imageBottomLeft, ResultPoint imageTopRight, ResultPoint imageBottomRight, int minCodewordWidth, int maxCodewordWidth) { BoundingBox boundingBox = new BoundingBox(image, imageTopLeft, imageBottomLeft, imageTopRight, imageBottomRight); DetectionResultRowIndicatorColumn leftRowIndicatorColumn = null; DetectionResultRowIndicatorColumn rightRowIndicatorColumn = null; DetectionResult detectionResult = null; for (int i = 0; i < 2; i++) { if (imageTopLeft != null) { leftRowIndicatorColumn = GetRowIndicatorColumn(image, boundingBox, imageTopLeft, true, minCodewordWidth, maxCodewordWidth); //Log.WriteLine("Before setRowNumbers\n" + leftRowIndicatorColumn); leftRowIndicatorColumn.SetRowNumbers(); //Log.WriteLine("After setRowNumbers\n" + leftRowIndicatorColumn); } if (imageTopRight != null) { rightRowIndicatorColumn = GetRowIndicatorColumn(image, boundingBox, imageTopRight, false, minCodewordWidth, maxCodewordWidth); //Log.WriteLine("Before setRowNumbers\n" + rightRowIndicatorColumn); rightRowIndicatorColumn.SetRowNumbers(); //Log.WriteLine("After setRowNumbers\n" + rightRowIndicatorColumn); } detectionResult = Merge(leftRowIndicatorColumn, rightRowIndicatorColumn); if (detectionResult == null) { // TODO Based on Owen's Comments in <see cref="ZXing.ReaderException"/>, this method has been modified to continue silently // if a barcode was not decoded where it was detected instead of throwing a new exception object. // return null; throw ReaderException.Instance; } if (i == 0 && (detectionResult.Box.MinY < boundingBox.MinY || detectionResult.Box.MaxY > boundingBox.MaxY)) { boundingBox = detectionResult.Box; } else { detectionResult.Box = boundingBox; break; } } int maxBarcodeColumn = detectionResult.ColumnCount + 1; detectionResult.DetectionResultColumns[0] = leftRowIndicatorColumn; detectionResult.DetectionResultColumns[maxBarcodeColumn] = rightRowIndicatorColumn; bool leftToRight = leftRowIndicatorColumn != null; for (int barcodeColumnCount = 1; barcodeColumnCount <= maxBarcodeColumn; barcodeColumnCount++) { int barcodeColumn = leftToRight ? barcodeColumnCount : maxBarcodeColumn - barcodeColumnCount; if (detectionResult.DetectionResultColumns[barcodeColumn] != null) { // This will be the case for the opposite row indicator column, which doesn't need to be decoded again. continue; } DetectionResultColumn detectionResultColumn; if (barcodeColumn == 0 || barcodeColumn == maxBarcodeColumn) { detectionResultColumn = new DetectionResultRowIndicatorColumn(boundingBox, barcodeColumn == 0); } else { detectionResultColumn = new DetectionResultColumn(boundingBox); } detectionResult.DetectionResultColumns[barcodeColumn] = detectionResultColumn; int startColumn = -1; int previousStartColumn = startColumn; // TODO start at a row for which we know the start position, then detect upwards and downwards from there. for (int imageRow = boundingBox.MinY; imageRow <= boundingBox.MaxY; imageRow++) { startColumn = GetStartColumn(detectionResult, barcodeColumn, imageRow, leftToRight); if (startColumn < 0 || startColumn > boundingBox.MaxX) { if (previousStartColumn == -1) { continue; } startColumn = previousStartColumn; } Codeword codeword = DetectCodeword(image, boundingBox.MinX, boundingBox.MaxX, leftToRight, startColumn, imageRow, minCodewordWidth, maxCodewordWidth); if (codeword != null) { detectionResultColumn.SetCodeword(imageRow, codeword); previousStartColumn = startColumn; minCodewordWidth = Math.Min(minCodewordWidth, codeword.Width); maxCodewordWidth = Math.Max(maxCodewordWidth, codeword.Width); } } } return CreateDecoderResult(detectionResult); }
/// <summary> /// Initializes a new instance of the <see cref="ZXing.PDF417.Internal.DetectionResultRowIndicatorColumn"/> class. /// </summary> /// <param name="box">Box.</param> /// <param name="isLeft">If set to <c>true</c> is left.</param> public DetectionResultRowIndicatorColumn(BoundingBox box, bool isLeft) : base(box) { this.IsLeft = isLeft; this.Codewords = new Codeword[box.MaxY - box.MinY + 1]; }