基于Java的QR解码项目源码程序

package jp.sourceforge.qrcode.codec.reader; import jp.sourceforge.qrcode.codec.data.*; import jp.sourceforge.qrcode.codec.exception.AlignmentPatternEdgeNotFoundException; import jp.sourceforge.qrcode.codec.exception.FinderPatternNotFoundException; import jp.sourceforge.qrcode.codec.exception.VersionInformationException; import jp.sourceforge.qrcode.codec.geom.*; import jp.sourceforge.qrcode.codec.reader.pattern.*; import jp.sourceforge.qrcode.codec.util.*; public class QRCodeImageReader { DebugCanvas canvas; //boolean[][] image; //DP = //23 ... max 255 //22 .. max 511 //21 .. max 1023 public static int DECIMAL_POINT = 22; public static final boolean POINT_DARK = true; public static final boolean POINT_LIGHT = false; //int numModuleAtSide; //デコード対象のシンボルにおける一辺のモジュールの数 public QRCodeImageReader() { //this.image = image; this.canvas = DebugCanvas.getCanvas(); } boolean[][] applyMedianFilter(boolean[][] image, int threshold, int internalScale) {//threshold,耙ﾖｵ boolean[][] filteredMatrix = new boolean[image.length][image[0].length]; //ノイズフィルタ(メディアンフィルタ) int numPointDark; for (int y = internalScale; y < image[0].length - internalScale; y+=internalScale) { for (int x = internalScale; x < image.length - internalScale; x+=internalScale) { //if (image[x][y] == true) { numPointDark = 0; for (int fy = -internalScale; fy < internalScale + 1; fy+=internalScale) { for (int fx = -internalScale; fx < internalScale + 1; fx+=internalScale) { if (image[x + fx][y + fy] == true) { numPointDark++; } } } if (numPointDark > threshold) { for (int dy = 0; dy < internalScale; dy++) for (int dx = 0; dx < internalScale; dx++) filteredMatrix[x + dx][y + dy] = POINT_DARK; } //} } } return filteredMatrix; } public QRCodeSymbol getQRCodeSymbol(boolean[][] image, int internalScale) throws FinderPatternNotFoundException , VersionInformationException , AlignmentPatternEdgeNotFoundException { int longSide = (image.length < image[0].length) ? image[0].length : image.length; // if (longSide < 255) QRCodeImageReader.DECIMAL_POINT = 23 - QRCodeUtility.sqrt(longSide / 256); canvas.println("Drawing matrix."); canvas.drawMatrix(image); //for(int i = 0; i < 500000; i++) System.out.println(""); canvas.println("Scanning Finder Pattern."); FinderPattern finderPattern = null; try { finderPattern = FinderPattern.findFinderPattern(image); } catch (FinderPatternNotFoundException e) { canvas.println("Not found, now retrying..."); image = applyMedianFilter(image, 5, internalScale); canvas.drawMatrix(image); try { finderPattern = FinderPattern.findFinderPattern(image); } catch (FinderPatternNotFoundException e2) { e2.printStackTrace(); throw e2; } catch (VersionInformationException e3) { throw e3; } // if (finderPattern.getCenter() == null) { // canvas.println("ERROR: Finder pattern not found"); // } } catch (VersionInformationException e4) { throw e4; } canvas.println("FinderPattern at"); String finderPatternCoordinates = finderPattern.getCenter(FinderPattern.UL).toString() + finderPattern.getCenter(FinderPattern.UR).toString() + finderPattern.getCenter(FinderPattern.DL).toString(); canvas.println(finderPatternCoordinates); int[] sincos = finderPattern.getAngle(); canvas.println("Angle*4098: Sin " + Integer.toString(sincos[0]) + " " + "Cos " + Integer.toString(sincos[1])); Line[][][][] samplingGrid = new Line[1][1][1][1]; int version = finderPattern.getVersion(); canvas.println("Version: " + Integer.toString(version)); AlignmentPattern alignmentPattern = null; if (version > 1) { try { alignmentPattern = AlignmentPattern.findAlignmentPattern(image, finderPattern); } catch (AlignmentPatternEdgeNotFoundException e) { e.printStackTrace(); throw e; } int matrixLength = alignmentPattern.getCenter().length; canvas.println("AlignmentPatterns at"); for (int y = 0; y < matrixLength; y++) { String alignmentPatternCoordinates = ""; for (int x = 0; x < matrixLength; x++) { alignmentPatternCoordinates += alignmentPattern.getCenter()[x][y].toString(); } canvas.println(alignmentPatternCoordinates); } } //for(int i = 0; i < 500000; i++) System.out.println(""); canvas.println("Creating sampling grid."); //[TODO] need all-purpose method if (version == 1) samplingGrid = getSamplingGrid1(finderPattern); else if (version >= 2 && version <= 6) samplingGrid = getSamplingGrid2_6(finderPattern, alignmentPattern); else if (version >= 7 && version <= 13) samplingGrid = getSamplingGrid7_13(finderPattern, alignmentPattern); // else if (version >= 14 && version <= 20) // samplingGrid = getSamplingGrid14_20(finderPattern, alignmentPattern); canvas.println("Reading grid."); boolean[][] qRCodeMatrix = getQRCodeMatrix(image, samplingGrid); //canvas.drawMatrix(qRCodeMatrix, 5); return new QRCodeSymbol(qRCodeMatrix); } //位置合せパターンがない型番1専用 Line[][][][] getSamplingGrid1(FinderPattern finderPattern) { int sqrtNumArea = 1; int sqrtNumModules = finderPattern.getSqrtNumModules(); //一辺当たりのモジュール数を得る int sqrtNumAreaModules = sqrtNumModules / sqrtNumArea; Point[] centers = finderPattern.getCenter(); int logicalDistance = 14; Line[][][][] samplingGrid = new Line[sqrtNumArea][sqrtNumArea][2][sqrtNumAreaModules]; Line baseLineX, baseLineY, gridLineX, gridLineY; //モジュールピッチを得る int[] modulePitch = new int[2]; //up left の順に格納 modulePitch[0] = getAreaModulePitch(centers[0], centers[1], logicalDistance); modulePitch[1] = getAreaModulePitch(centers[0], centers[2], logicalDistance); //X軸に垂直の基線(一般に縦) baseLineX = new Line( finderPattern.getCenter(FinderPattern.UL), finderPattern.getCenter(FinderPattern.DL)); int sin = finderPattern.getAngle()[0]; int cos = finderPattern.getAngle()[1]; Axis axis = new Axis(sin, cos, modulePitch[0]); axis.setOrigin(baseLineX.getP1()); baseLineX.setP1(axis.translate(-3, -3)); axis.setModulePitch(modulePitch[1]); axis.setOrigin(baseLineX.getP2()); baseLineX.setP2(axis.translate(-3, 3)); //Y軸に垂直の基線(一般に横) baseLineY = new Line(finderPattern.getCenter(FinderPattern.UL), finderPattern.getCenter(FinderPattern.UR)); axis.setModulePitch(modulePitch[1]); axis.setOrigin(baseLineY.getP1()); baseLineY.setP1(axis.translate(-3, -3)); axis.setModulePitch(modulePitch[1]); axis.setOrigin(baseLineY.getP2()); baseLineY.setP2(axis.translate(3, -3)); baseLineX.translate(1,1); baseLineY.translate(1,1); for (int i = 0; i < sqrtNumAreaModules; i++) { gridLineX = new Line(baseLineX.getP1(), baseLineX.getP2()); axis.setOrigin(gridLineX.getP1()); axis.setModulePitch(modulePitch[0]); gridLineX.setP1(axis.translate(i,0)); axis.setOrigin(gridLineX.getP2()); axis.setModulePitch(modulePitch[0]); gridLineX.setP2(axis.translate(i,0)); gridLineY = new Line(baseLineY.getP1(), baseLineY.getP2()); axis.setOrigin(gridLineY.getP1()); axis.setModulePitch(modulePitch[1]); gridLineY.setP1(axis.translate(0,i)); axis.setOrigin(gridLineY.getP2()); axis.setModulePitch(modulePitch[1]); gridLineY.setP2(axis.translate(0,i)); samplingGrid[0][0][0][i] = gridLineX; samplingGrid[0][0][1][i] = gridLineY; } for (int ay = 0; ay < samplingGrid[0].length; ay++) { for (int ax = 0; ax < samplingGrid.length; ax++) { canvas.drawLines(samplingGrid[ax][ay][0], Color.LIGHTBLUE); canvas.drawLines(samplingGrid[ax][ay][1