Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zxing-cpp/core/src/GlobalHistogramBinarizer.h @ 9:b2d41d02518f

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Use the LLVM compilers by symlinking them in the venv. This is because CC= and CXX= do not work for some subprojects.
author Franz Glasner <fzglas.hg@dom66.de>
date Wed, 17 Sep 2025 06:11:34 +0200
parents b50eed0cc0ef
children
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1 /*
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2 * Copyright 2016 Nu-book Inc.
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3 * Copyright 2016 ZXing authors
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4 */
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5 // SPDX-License-Identifier: Apache-2.0
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7 #pragma once
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9 #include "BinaryBitmap.h"
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11 namespace ZXing {
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13 /**
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14 * This Binarizer implementation uses the old ZXing global histogram approach. It is suitable
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15 * for low-end mobile devices which don't have enough CPU or memory to use a local thresholding
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16 * algorithm. However, because it picks a global black point, it cannot handle difficult shadows
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17 * and gradients.
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18 *
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19 * Faster mobile devices and all desktop applications should probably use HybridBinarizer instead.
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20 *
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21 * @author dswitkin@google.com (Daniel Switkin)
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22 * @author Sean Owen
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23 */
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24 class GlobalHistogramBinarizer : public BinaryBitmap
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25 {
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26 public:
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27 explicit GlobalHistogramBinarizer(const ImageView& buffer);
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28 ~GlobalHistogramBinarizer() override;
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30 bool getPatternRow(int row, int rotation, PatternRow &res) const override;
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31 std::shared_ptr<const BitMatrix> getBlackMatrix() const override;
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32 };
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34 } // ZXing