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69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
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#ifndef __HYBRIDBINARIZER_H__
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#define __HYBRIDBINARIZER_H__
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/*
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* HybridBinarizer.h
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* zxing
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*
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* Copyright 2010 ZXing authors All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <vector>
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#include <zxing/Binarizer.h>
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#include <zxing/common/GlobalHistogramBinarizer.h>
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#include <zxing/common/BitArray.h>
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#include <zxing/common/BitMatrix.h>
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namespace zxing {
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class HybridBinarizer : public GlobalHistogramBinarizer {
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private:
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Ref<BitMatrix> matrix_;
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Ref<BitArray> cached_row_;
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int cached_row_num_;
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public:
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HybridBinarizer(Ref<LuminanceSource> source);
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virtual ~HybridBinarizer();
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virtual Ref<BitMatrix> getBlackMatrix();
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Ref<Binarizer> createBinarizer(Ref<LuminanceSource> source);
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private:
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// We'll be using one-D arrays because C++ can't dynamically allocate 2D
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// arrays
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int* calculateBlackPoints(unsigned char* luminances,
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int subWidth,
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int subHeight,
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int width,
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int height);
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void calculateThresholdForBlock(unsigned char* luminances,
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int subWidth,
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int subHeight,
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int width,
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int height,
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int blackPoints[],
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Ref<BitMatrix> const& matrix);
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void threshold8x8Block(unsigned char* luminances,
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int xoffset,
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int yoffset,
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int threshold,
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int stride,
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Ref<BitMatrix> const& matrix);
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};
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}
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#endif
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