cpp/core/src/zxing/qrcode/detector/Detector.h

   1 #ifndef __DETECTOR_H__
   2 #define __DETECTOR_H__
   3
   4 /*
   5  *  Detector.h
   6  *  zxing
   7  *
   8  *  Created by Christian Brunschen on 14/05/2008.
   9  *  Copyright 2008 ZXing authors All rights reserved.
  10  *
  11  * Licensed under the Apache License, Version 2.0 (the "License");
  12  * you may not use this file except in compliance with the License.
  13  * You may obtain a copy of the License at
  14  *
  15  *      http://www.apache.org/licenses/LICENSE-2.0
  16  *
  17  * Unless required by applicable law or agreed to in writing, software
  18  * distributed under the License is distributed on an "AS IS" BASIS,
  19  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20  * See the License for the specific language governing permissions and
  21  * limitations under the License.
  22  */
  23
  24 #include <zxing/common/Counted.h>
  25 #include <zxing/common/DetectorResult.h>
  26 #include <zxing/common/BitMatrix.h>
  27 #include <zxing/qrcode/detector/AlignmentPattern.h>
  28 #include <zxing/common/PerspectiveTransform.h>
  29
  30 namespace zxing {
  31 namespace qrcode {
  32
  33 class Detector : public Counted {
  34 private:
  35   Ref<BitMatrix> image_;
  36
  37
  38   static Ref<BitMatrix> sampleGrid(Ref<BitMatrix> image, int dimension, Ref<PerspectiveTransform>);
  39   static int computeDimension(Ref<ResultPoint> topLeft, Ref<ResultPoint> topRight, Ref<ResultPoint> bottomLeft,
  40                               float moduleSize);
  41   float calculateModuleSize(Ref<ResultPoint> topLeft, Ref<ResultPoint> topRight, Ref<ResultPoint> bottomLeft);
  42   float calculateModuleSizeOneWay(Ref<ResultPoint> pattern, Ref<ResultPoint> otherPattern);
  43   float sizeOfBlackWhiteBlackRunBothWays(int fromX, int fromY, int toX, int toY);
  44   float sizeOfBlackWhiteBlackRun(int fromX, int fromY, int toX, int toY);
  45   Ref<AlignmentPattern> findAlignmentInRegion(float overallEstModuleSize, int estAlignmentX, int estAlignmentY,
  46       float allowanceFactor);
  47 public:
  48
  49   static Ref<PerspectiveTransform> createTransform(Ref<ResultPoint> topLeft, Ref<ResultPoint> topRight, Ref <
  50       ResultPoint > bottomLeft, Ref<ResultPoint> alignmentPattern, int dimension);
  51
  52   Detector(Ref<BitMatrix> image);
  53   Ref<DetectorResult> detect();
  54 };
  55 }
  56 }
  57
  58 #endif // __DETECTOR_H__