2 * GlobalHistogramBinarizer.h
5 * Copyright 2010 ZXing authors All rights reserved.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
20 #ifndef GLOBALHISTOGRAMBINARIZER_H_
21 #define GLOBALHISTOGRAMBINARIZER_H_
24 #include <zxing/Binarizer.h>
25 #include <zxing/common/BitArray.h>
26 #include <zxing/common/BitMatrix.h>
30 class GlobalHistogramBinarizer : public Binarizer {
32 Ref<BitMatrix> cached_matrix_;
33 Ref<BitArray> cached_row_;
37 GlobalHistogramBinarizer(Ref<LuminanceSource> source);
38 virtual ~GlobalHistogramBinarizer();
40 virtual Ref<BitArray> getBlackRow(int y, Ref<BitArray> row);
41 virtual Ref<BitMatrix> getBlackMatrix();
42 static int estimate(std::vector<int> &histogram);
43 Ref<Binarizer> createBinarizer(Ref<LuminanceSource> source);
48 #endif /* GLOBALHISTOGRAMBINARIZER_H_ */