35 lines
966 B
C++
35 lines
966 B
C++
/*
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* Copyright 2016 Nu-book Inc.
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* Copyright 2016 ZXing authors
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*/
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "BinaryBitmap.h"
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namespace ZXing {
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/**
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* This Binarizer implementation uses the old ZXing global histogram approach. It is suitable
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* for low-end mobile devices which don't have enough CPU or memory to use a local thresholding
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* algorithm. However, because it picks a global black point, it cannot handle difficult shadows
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* and gradients.
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*
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* Faster mobile devices and all desktop applications should probably use HybridBinarizer instead.
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*
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* @author dswitkin@google.com (Daniel Switkin)
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* @author Sean Owen
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*/
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class GlobalHistogramBinarizer : public BinaryBitmap
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{
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public:
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explicit GlobalHistogramBinarizer(const ImageView& buffer);
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~GlobalHistogramBinarizer() override;
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bool getPatternRow(int row, int rotation, PatternRow &res) const override;
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std::shared_ptr<const BitMatrix> getBlackMatrix() const override;
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};
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} // ZXing
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