1 #ifndef __HYBRIDBINARIZER_H__
2 #define __HYBRIDBINARIZER_H__
7 * Copyright 2010 ZXing authors All rights reserved.
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
23 #include <zxing/Binarizer.h>
24 #include <zxing/common/GlobalHistogramBinarizer.h>
25 #include <zxing/common/BitArray.h>
26 #include <zxing/common/BitMatrix.h>
30 class HybridBinarizer : public GlobalHistogramBinarizer {
32 Ref<BitMatrix> cached_matrix_;
33 Ref<BitArray> cached_row_;
37 HybridBinarizer(Ref<LuminanceSource> source);
38 virtual ~HybridBinarizer();
40 virtual Ref<BitMatrix> getBlackMatrix();
41 Ref<Binarizer> createBinarizer(Ref<LuminanceSource> source);
43 void binarizeEntireImage();
44 // We'll be using one-D arrays because C++ can't dynamically allocate 2D arrays
45 int* calculateBlackPoints(unsigned char* luminances, int subWidth, int subHeight,
46 int width, int height);
47 void calculateThresholdForBlock(unsigned char* luminances, int subWidth, int subHeight,
48 int width, int height, int blackPoints[], Ref<BitMatrix> matrix);
49 void threshold8x8Block(unsigned char* luminances, int xoffset, int yoffset, int threshold,
50 int stride, Ref<BitMatrix> matrix);
55 #endif /* GLOBALHISTOGRAMBINARIZER_H_ */